MIL-STD-808A(USAF) 18 January 1983 SUPERSEDING MIL-STD-808

MIL-STD-808A(USAF)18 January 1983SUPERSEDINGMIL-STD-808(USAF) ,,22 December 1960

MILITARY STANDARD

FINISHES, MATERIALS AND PROCESSES FORCORROSION PREVENTION AND CONTROL IN

SUPPORT EQUIPMENT

AMSC No. F3231 AREA MFFP

Downloaded from http://www.everyspec.com on 2009-02-25T5:20:18.

,.,,

.’$IIL-STD-808A(IJSAF) ,,

,, .DEPARTM’ENT OF DEFENSE ,, ‘. ~~ ., 0“l.~ashington,D.C’. ‘?0301 .,

.“

Finishes, Materials and Processes

,,‘for Corrosion prevention and . .-’

Control in Support Eouipment, MIL-STn-808A(USAF). , : ,. ,,

1. This Military Standard is approved for use b,ythe Air Force” , ,Wright Aeronautical Laboratories, De~artment of the A~r Force!

,,

and is available for use by all .Departments and Aqencles, Of the., .’ , .:Department of Defense.

,.,,..,,

2. Beneficial comments (recommendations, additions, delet~ons)and any pertinent data which may be of use in improving th~sdocument should be addressed to the Air Force Wright AeronauticalLaboratories, hlLSA,,Wright-Patterson Air Force Base, Ohio 45433byusing the self-addressed Standardization ‘Ocumentl mProvement “ ~Proposal (DD Form 1426) appearing at the end of this document or!iyletter.

,.

,.


.0MIL-STD-808A(USAF)

FOREWORD

The purpose of this standard is to establish acceptable requirementsfor materials selection, materials processing, cleaning processes,finishing materials and finishing processes and techniques foreffective protection against corrosion for support equipment exclu-ding munitions and electronic equipment. This standard covers bothorganic and inorganic finishes. A finish code system is provided , -for identifying the selected finishon engineering drawings.

iii

o


,,, .

.MIl_.sTD-808A(usAF)

‘“0CONTENTS

Paragraph .,’,,

SCOPE. . . ; . . ... . . . . . .....>,’Scope, . . . . . . . . . s “ . “ . “ “Exclusions .. . . . . . . . . . . . .

Classification . . : . . . . . . . . .Applicability. . . . . .S ‘ “ “-o “ “

I

1,

1

1.

2

2’24

5

55

5

5566,6667

7

77

778888899999

1.

1.1

1.21.3 :1,4,”

,,,,’,

,..2,

2.12.1.12.1.2

Government documehts . . . . . . . . .Specificationsand Standards . . 0 . “Other documents and publications . . .

DEFINITIONS. ’... . . . . SO .- . “’”3.

Abrasive blasted surfaces. . . . . . .Nhite metal surface finish . . . . . .Commercial blast metal surface

finish. . . .. . . . ... . . . . . .

3,13.,1.13.1.2

GENERAL REQUIREMENTS . . . . . : . .,. .Finishing processes.” . . . . . . .. . .~a~~~~~? ~“: . . . . . . . . . . . ... .Selection. . . . . . . . . ● . “ ~ . .Exceptions . . . . . . . . . . , . ..Parts fabrication. . . . . . . . . . .Holes and recesses”. . . . . . - . . .‘Masking. . . . . . . . . . ..... . . .

4.’,. ..

4.1A-

;:;4.44.54.64.7

DETAILED REQUIREMENTS. . . . . . . . . .5.

Materials and finish process consider-ations in design . . . . . . . . . .

Design considerations. . . . . . . . .General design guidelines for

corrosion prevention . . . . . . . .Exclusion of water . , . . . . . . . .Ventilation. .. . . . . . . . . . , . .Drai”nage. . , . . . . . . . . . . . .Dissimilar metals. . . . . . . . . . .Insulating materials . . . . . . . . .

5..1

5,1.15.1.2

5.1.2.15.1.2.25.1 .2.35.1 .2.45.1.2.55.1 .2.65.1 .2.75.1 .2.85,1 .2.95.1.2.105.1.2.11

Hinges.., .. .. . . . . . c ● . . . .Storage compartments . . . . . . . . .Battery areas . . . . . . . . . . . . .Exhaust systems. . . . . . . . . . . .Nonstandard ferrous hardware . . . . .Closed hollow members. . . . . . . . .

0iv


eparaqra~h 5.2

5.2.15.2.25.2.2.15.2.2.25.2.2.35.35.3.15.3.25.3.2.15.3.2.25.3.2.2.15.3.2 .2.25.3.2.35.3.2.45.3.2.4.15.3.2.55.45.4.15.4.1.15.4.1.25.4.25.55.5.15.5.1.1

5.5.1.25.5.1.35.5.1.45.5.1 .4.15.5.25.5.2.15.5.2.25.5.2.35.5.35.5.3.15.5.3.2

5.6

5.6.15.6.25.75.7.15,7.2

MIL-STD-808A(USAF)

CONTENTS - Continued.

Documentation. . . . . . . . . . . . .Finish specification . . . . . . . . .Detailed drawings. . . . . . . . . . .Supplementary notes. . . . . . . . . .Manufacturers options. . , . . . . . .Multiple finish. . . . . . . . . . . .Cleaning requirements. . . . . . . . .Precleaning. . . . . . . . . . . . . ;Cleaning of surfaces . . . . . . . . .Aluminum and its alloys. . . . . . . .Low strength steels. . . . . . . . . .Abrasive blasting. . . . . . . . . . .Zinc surfaces . . . . . . . . ...”.Hiah strenath steels . . . . . . . . .Corrosion and heat resistina steels. .Passivation treatment. . . . . . . . .MiJgnesiumand its alloys . . . . . . .Surface treatments for metals. . . . .Aluminum and aluminum alloys . . . . .Electrical parts . . . . . . . . . . .Touch-up. . . . . . - . . . . .. “.Magnesium alloys . . . . . . . . . . .T-...---:..-A.+.ina.illur-yalllb buablllys . . . . ● . . . “ -

Metallic coatings application. . . . .Limitation on use of protectivemetal coatings . . . . . . . . . . .

Coating for corrosion control. . . . .Cadmium plating and coating. . . . . .Zinc plating and coating . . . . . . .Inorganic zinc rich primer . . . . . .Coatings for functional purposes . . .Chromium plating . . . . . . . . . . .Nickel plating . . . . . . . . . . . .Aluminum coating . . . . . . . . . . .Inorganic nonmetallic coating. . . . .Phosphate treatment. . . . . . . . . .Hard anodic coating for aluminum

surfaces and its alloys. . . . . . .Shot peening and other residual

compressive stress inducingtreatments. . . . . . . . . . . . .

Processing. . . . . . . . . . . . c .Plating finish selection . . . . . . .Organic coatings . . . . . . . . . . .Selection. . . . . . . . . . . . . . .Facilities and equipment . . . . . . .

v

Paqe

101011111111111112121212121313131313131414141414

1415’161616161616181818

18

181919191920


Paragraph

.

5.7.2.15.7.2.25.7.2.35.7.35.7.3.15.7.3.2.5.7,3,35.7.3,45.7,.3.55.7.3.65.7.3.6.15.7.3,6.25.7.3.7

5.7.3.8

5.7.3.95.7.3.105;7.3.10.15.7,3.115.7.3.125.7.3.13

5.7.3.145.7.3.155.7,.45.7.4.15.7.4.2

5.7.4.35.7.4 .3.15.7.4.3.25,85.8.15.8.25.95.9.1-5.9.25.9.35.9.45,9.’55.9.6.5.105.10.15.10.25,115.11.15,11.25.11.3

:,,., ,., ,.

CONTENTS -Continued. ,. ~ ., . “’, “e,Page,.’

Facilivies . . ...”...-. . ...’”.’ 20 :’Environmental controls. . . . . . .’ . . .20 “Application equipment . . . ‘. . .’. . “ 20 ‘“ .“Organic coating application .-. .. . . 20Material. . . . . . . . . . . . . . . ‘.,’.20 :,Mixing. .... ... . . . . . . . ... .. . 20Selection of thinners . . . . . . . .. . 20, :Storage of paint materials.- ...1...,,. 21 ., ,Cleaning, general . . . . . ... . ... . 21..””Tests for surface condition . . . . . . 21 . .

Reaction of surface ; . . .. . .’- ; . 21,,

Water-break test. . . . . . . . . . . . 21Manually applied surface treatment

and touch-up. . . . . . . . . . . . ~ 22Aluminum and magnesium surface

treatments . ...+.... .,”:. 22Final preparation for painting. . . . . 22Special precautions . . . . . . . . . . 22 .General requirements. . . .’. . . . . . 22Production spray test panels. . . . . . 23,Final dry of the finish . . . . . . . . 23 .Application of subsequent coats to

previously painted surfaces . . . . ., 23Finish code selection . . . . . . . . .. 23 0Finish.selection. . . . . . .... . , . . 23Colors. . . . . . . . . . . . “ . . . .“23Color coding . . . . . ... .....” ,24Pipelines and compressed gas

cylinders. . . . . . . . . . . . . “ 24Authorized colors . . . . . . . . . . . 24’Exterior surfaces . . . . . . . . . . . 24Interior surfaces . . . . . . . . .. . 25Marking. . . ; . . . . . . : . .“ “ “ 26Reflectorized adhesive sheetln9 .“. . 0 26Stenciling. . . . . . . . . . . . . . . 26Other finishes . . . . . . . . . . ..”26Electrical components . . . . . . . . . 26 ,. ~~ ,,Open hollow members . . . . . . . . . . 27Closed hollow members . . . . . .. . . 27 ‘“Wood surfaces to be painted . . . . . . 27Nonmetallic surfaces. . . . . . . . . . 27Surfaces not requiring paint. . . . . . 27Environmental sealing . . . . . . . . . 27General requirements. . . . . . . . . . 27Detailed requirements . . . . . . . . . 27Fastener installation . . . . . . . . . 28Detailed requirements . . . . . . . . . 28Removable fasteners . . . . . “ .“. “ . 28Monel and stainless steel fasteners . . 28 0

vi


a’

Paragraph 6.

6.16.26.2.16.2.26.36.46.56.66.76,86.96.10

TABLE I.II.111.

IV.

v.VI.VII.VIII.

Ix.

MIL-STD-808A(USAF)

CONTENTS - Continued

INSPECTION. . . . . . . . .

Responsibility for inspect”

. . . . . . . . .

on. . . . . . . .General inspection requirements . .Tests. . . . . . . . . . . . . . .Test specimens. . . . . . . . . . .Condition of surfaceprior to paintContinuity and uniformity of coatin!

. . . . .

. . . . . .

. . . . .ng. . . .. . . . ,.

Thickness of coating, . .. . . . . . . . . .Paint application . . . . . . . . . . . . . .Paint adhesion. . . . . . . . . . . . . . . .Color. . . . . . . . . . . . . . . . . . . .Hiding power, gloss, and smoothness of paint,Data requirements . . . . . . . . . . . . . .

TABLES

Plating finishes (P). . . . . . . . . . . . .Paint finishes (Fand FF) . . . . . . . . . .Electrical conductivity of passivatedfinishes. . . . . . . . . . . , . . . . . .

Metallic coatings other than electroplated“m-- ItfilCchitllty> \l’i/. . . . . . . . . . . . . . . .

Final paint film - gloss. , . , . . . . . . .Final paint film - semi-gloss . . . . . . . .Final paint film - lusterless . . . . . . . .Finishes or process other than painting orplating(D). . . . . . . . .“. . . . . . . .

Finish selections . . . . . . . . . . . . . .

Pa e%=

28282829292929’.”2929292929

3133

46

5254

vii


MIL-STD-808A(USAF)

FINISHES,CORROSION

1. SCOPE

MILITARY STANDARD

MATERIALS AND PROCESSES FORPREVENTION AND CONTROL INSUPPORT EQUIPMENT

1.? Scope. This standard establishes minimum requirements for finishsystems for Air Force sumort eQuiDment and also establishes a codes~stem to”specify those finish systems in a simplified manner on draw-ings by Air Force engineering activities and in contractor generateddrawings as required by procurement officers.

1.2 Exclus~ons. Electronic equipment and munitions are excluded fromthe requirements of this standard.

1,3 Classification For application of finishes to support equipment,surfaces are classified as follows:

Type I (exposed) Type I surfaces are areas either ex~osed ~~d;rectly to the environment when equip-iiieniis in operating or travailing con-figuration, or areas not exposed directlyto the environment but subject to combineddirect action of environmental elements.Environmental elements include temperatureextremes, humidity extremes, rain, hail,snow, sleet, salt laden air, industrialatmospheres, direct solar radiation, dust,and the abrasive action of wind-blown sand.

Type II (sheltered) Type II surfaces are areas not exposeddirectly to the environment during equip-ment operation and traveling configurationand are not subjected to direct action ofrain, hail, snow, sleet, direct solar rad-iation, and wind-blown sand.

1.4 Applicability. This standard is applicable for use by all AirForce procuring activities and their respective contractors involved inthe design and procurement of support equipment. The detailed drawingsand detailed finish specification applies to all elements of supportequipment, including spares.

1


,..

FIIL-STD-808A(USAF),,

2. REFERENCED DOCUMENTS ~ , , .

2.1 Government documents. “ .

2.].1 Specificat.ionsandstandardi. Unless o~herwise specified,the following specifications and.standards of the issue listed inthat issue of the Department of Defense Index of Specificationsand Standards .(DoDISS) specified in the solicitation, form a partof this specification to the extent specified herein. “

SPECIFICATIONS

FEDERAL’

L-P-41O

.L-S-300O-A-51O-T-620 “

P-D-680’QQ-C-320QQ-N-290QQ-P-35’

QQ-P-416QQ-Z-.325

“ TT-C-490

TT-M-,261TT-N-95.TT-P-636TT-V-121

MILITARY

MIL-!I-3171MIL-C-54.1O

MIL-C-5541,,

MIL-S-85~2

MIL-A-8625MIL-S-8784

MIL-S-8802

MIL-C-8837MIL-H-9850DOD-D-I000MIL-C-10578

.’,,,,,

,.’ ,,,’. .,,, ‘.., ,’,,

Plastic, Polyamide (Nylon); Rigid, Rods, Tubes,Flats, Molded and Cast PartsSheeting and Tape,. Reflective, Nonexposed LenseAcetone, TechnicalTrichloroethane 1,1,1, Technical, Inhibited(Methyl Chloroform)Dry Cleaning Solvent ‘Chromium Plating (Electrodeposite@)Nickel Plating (Electrodeposited)Passivation Treatments for Corrosion-Resisting.SteelPlating; Cadmium (Electrodepoiited’),Zinc Coating,. Electrodepos”ited, Requirements. forCleaning Method and Pretreatment of Ferrous”Surfaces for Organic CoatingsMethyl Ethyl Ketone, Technical’Naptha, AliphaticPrimer Coating, Alkyd, Wood and Ferrous MetalVarnish, Spar, Water Resisting

,,

Magnesium Alloy, Processes for PretreatmentCleaning Compound, Aluminum Surface, Non-Flame-SustainingChemical Conversion Coatings on Aluminum andAluminum AI1OYS and Prevention of Corrosion onSupport Equipment, Aeronautical, Special, GeneralSpecifications for the Design ofAnodic Coatings, for Aluminumand Aluminum Alloys

,.,., ,. ‘,

,,

“o

‘,

..

.,“‘a

Sealing Compound, Aluminum Integral Fuel ‘Tanks andFuel Cell Cavities, Low Adhesion, Accelerator RequiredSealing Compound, Temperature Resistant, IntegralFuel Tanks and Fuel Cell Cavities, High AdhesionCoating, Cadmium (Vacuum Deposited)Hinge, Butt, Continuous, Piano (SUPP 1)Drawings, Engineering and Associated ListsCorrosion Removing and Metal Conditioning Compound

a

‘-.2


MIL-STD-808A(USAF)

m

MIL-C-11796

MIL-W-13518

NIL-S-13165MIL-P-13924MIL-C-16173

DOD-P-16232

MIL-C-17711

MIL-C-23217‘MIL-C-23236

MIL-P-23377

MIL-C-25769MIL-C-26074MIL-P-26915MIL-P-27418MIL-S-38249MIL-C-38334

MIL-P-38336

MIL-M-43248MIL-C-43616MIL-M-45202MIL-R-46068MIL-T-81533MIL-C-81562MIL-&81706

MIL-S-81733MIL-C-81740

MIL-C-81751MIL-S-83286

MIL-S-83430

MIL-C-83488MIL-C-83982

STANDARDS

FEDERAL

FED-STD-141

Corrosion Preventive Compound, Petrolaturn, HotApplicationWood preservative, Tetrachlorophenol and penta-chlorophenol, Surface Sealing Compound ,.Shot Peening of Ferrous Metal PartsCoating, Oxide, Black for Ferrous MetalsCorrosion Preventive Compound,- Solvent Cut Back,Cold ApplicationsPhosphate Coatings, Heavy, Manganese or Zinc Base(for ferrous metals )Coatings, Chromate, for Zink A~loY castings and

-Hot-dip Galvanized SurfacesCoating, Aluminum, Vacuum Depositedpaint Coating Systems, Steel Ship Tank, Fuel andSalt Water BallastPrimer Coating, Epoxy Polyamide, Chemical andSolvent ResistantCleaning Compound, Aircraft Surface, Alkaline WaterbaseCoating, Electroless Nickel, Requirements for

‘, Primer Coating, Zinc Dust Pigmented, For Steel SurfacesPlating, Soft Nickel (Electrodeposi ted, Sulfamate Bath)Sealing Compound, FirewallCorrosion Removing Compound, Prepaint, for AircraftAluminum SurfacesPrimer Coating, Inorganic, Zinc Dust Pigmented, SelfCuring, for Steel SurfacesMat, Reinforcing Glass FiberCleaning Compound, Aircraft SurfaceMagnesium Alloy, Anodic Treatment ofResin, Polyester, Bisphenol - A Type1,1,1 Trichloroethane (Methyl Chloroform) StabilizedCoating, Cadmium and ,Zinc (Mechanically Deposited)Chemical Conversion Materials for Coating Aluminumand Aluminum AlloysSealing and Coating Compound, Corrosion InhibitiveCoatings, Aluminum and Aluminum Alloys (MetallicCompound Decomposition)Coating, Metallic CeramicCoating, Urethane, Aliphatic Isocyanate, for AerospaceApplicationsSealing Compound, Integral Fuel Tanks and Fuel CellCavities, Intermittent Use to 360 Degrees FCoating, Aluminum, ION Vapor DepositedCompound, Sealing, Fluid Resistant

Paint, Varnish, Lacquer and Related Materials,Methods of Inspection, Sampling and Testing

3


MIL-STD-101 , Color Codes for Pipelines and for Compressed .Gas Cylinders ‘. “ ~~~~ “’

MI’L-STD-490 Specification Practices -MIL-STD-753 Corrosion Resistant Steel Parts, Sampling”” ‘;”

Inspection and Testing for Surface Preparation “ .MIL-STD-889 Dissimilar Metals

.,,, .,,,

MIL-STD-1504” Abrasive Blasting‘;;MIL-STD-1568

,,.Materials and Processes for Corrosion Pre- ,.,-,,,,

vention and Control in Aerospace Weapon Systems ‘

DEPARTMENT O’FTHE AIR FORCE

AFR 400-44 Corrosion Preventionand Control ProgramAFM 88-15 Air Force Design Manual - Criteria and Standards”

of Air Force ConstructionAFOSH STD 161-2 Industrial VentilationAFSC Design Handbook 2-6 Ground Equipment FacilitiesT:O. 42A-1-1 Safety, ,Fire Precaution and Health promoti~ri

Aspects of Painting, Doping and Paint Removal ~~.,T.O. 1-1-8 ‘Application of Organic Coatings, Aerospace. ., .,

Equipment

(Copies of specifications, standards, drawings, and publications “orequired by Manufacturers in connection with specific acquisition ,.

functions should be obtained from the procuring activity or as directed “ ,by the contracting officer. ),,

2.1.2 Other documents and publications,. The following other Government “-documents form a partof this standard to the extent specified herein. “

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM A 123 Zinc (Hot-galvanized) Coatings on Products “Fabricated from Rolled, Pressed, and ForgedSteel Shapes, Plates, Bars, and Strip

ASTM,A 525 General Requirements for Steel Sheet, ?inc- ‘Coated (Galvanized) by the Hot-Dip process -

ASTM F 519. Mechanical Hydrogen Embrittlement of Testingof Plating Processes and Aircraft MaintenanceChemicals

(Application for copies should be addressed to the American Society forTesting and Materials, 1916 Race Street, Philadelphia, PA 19103.)

4 m


oMIL-STD-808A(USAF)

STEEL STRUCTURES PAINTING COUNCIL

SSPC-SP6-63, Edition 6 Steel Structures Painting Manual”;Volumes 1 and 2

(Applications for copies should be addressed to the Steel StructuresPainting Council, 4400 FifthAvenue, Pittsburg, PA 15123).

(Industry association specifications and standards are generallyavailable for reference from libraries. They are also distributedamong technical groups and using Federal Agencies).

2.1.3 Order of precedence. In the event of a conflict between thetext of this standard and the references cited herein, the text ofthis standard shall take precedence.

3. DEFINITIONS

3.1 Abrasive blasted metal surfaces.

3.1.1 White metal surface finish. A white metal surface finish isdefined as abrasive cleaning that removes all mill scale, rust scale,rust, adhering mill scale, casting sand, slag, weld spatter and otherforeign matter. The surface produced will have a very uniform greyishliietd~~icwhite co~~i’with ~ r~ughnej~ p}-Gfi~e c0iif0fiifi5tO the Sizeof abrasives used. This surface is required when organic and inorganiczinc rich primers and galvanizing is’applied to steel. See alsoMIL-STD-1504 on abrasive blasting.

3.1.2 Commercial blast metal surface finish. A commercial blastmetal surface finish is defined as abrasive cleaning which will leavethe surface clean and free of all adhering mill scale, corrosion pro-ducts, dirt, casting sand, slag and other foreign substances and pro-vide a dull grey slightly streaked surface. This surface finish issuitable for the application of organic coatings. See also MIL-STD-1504 on abrasive blasting.

4. GENERAL REQUIREMENTS

4.1 Finishing processes. The cleaning procedures, sealant materials,coating systems and other preservative materials covered by thisstandard will provide protection against corrosion and other effectsof the environment and service conditions providing the finishingsystems are properly planned, selected and applied during the designand manufacture of the support equipment. High performance finish

,,


MIL-STD-808A(USAF) ~ ‘, ~.,,

systems :are extremely critical of the surface ’to,whjch they are . “applied. !iofinish systemw’illadhere to corroded metals and “’ ~~,alloys or,improperly cleaned materials. Conse~uently”, jroperattention mustbe given to cleaning prior to applicationofany

finish. Also.of paramount importances the selection of compatiblefinishing systems in order to insure film adhesion and eliminatelifting, blistering and wrinkling. Good workma,nship’and strict ‘quality control of the mixing, application and curing of the finishsystem is mandatory in order to,obtain acceptable protective, coatingsystems. ,

.,, ,,.

4.2 Materials. All materials and.processes shall conform,to, the ,requirements of the applicable specifications and shall be used inaccordance with the governing documents.

4,3 Selection.” The responsibility for selection and approval ofall materials and processes lies .with the engineering activity havingengineering responsibility for the System or item. The engineeringresponsibility shall also include selection and approval of materials,,processes and finishes which are consistent. with approved corrosioncontrol practices and Air Force inventory standardization as,definedin AFR”400-44 and supplements thereto and MIL-STD-l,568i

4.4 Exceptions. Materials, processes and finishes not Iistedinthis standardmay be utilized where unique. functional requirementsexist.or when materials, processes and finis-hes:required by,thisstandard are not applicable. Some materials, processes and-finishesreferenced in this standard,arenot covered by either Governmentor Industry specifications. Information on the applicability andavailable sources forsuch materials, processes and finishes canbe obtained from the engineering activity responsible for the systemor item. Complete information on materials, processes, and finishesin the above cases shall be included on the applicable detaileddrawings and in the finish specification.

“ 4.5 Parts fabrication. Parts fabricated by means of lock seams,lap joints, tack welding, spot welding or other permanent fasteningtechniques shall be primer coated, plated or chemically treated ora combination of the treatments prior to the assembly operation, orthe design shall be such that,plating and otherchemical solutions ‘will drain from the part.

4.6 Holes and recesses. When it is not possible to meet thicknessrequirements for organic paint finishes or metallic finishes, sealantmaterials containing corrosion inhibitors shall be used. (See 5.11)

6

.,

,,

,.

.,‘:0,’,“,,.,,,

.’.,,,..

., ,.

.0,,,

0


MIL-STD-808A(USAF)

o .“

4.7 Masking, Plated or base metal parts containing areas specifi-tally intended for electrical contact or heat trattsmission ’shallhave such areas masked or otherwise protected during subsequent.finishing processes.

4.7.1 Items such as fabrics, plastics, rubber, working parts ofmachinery, and other surfaces not normally painted in good com-mercial practice, shall not be painted unless specified in theequipment specification. These items shall be masked or otherwiseprotected during subsequent finishing processes,

5. DETAIL REQUIREMENTS

5.1 Materials and finish process considerations in desiqn.

5.1.1 Design considerations. The primary consideration in thedesign and construction of support equipment is the abjlity of thedesign to comply with structural and operational requirements. In ,addition, the support equipment is expected to perform reliablyand require minimum maintenance over a specified lifetime, whichincludes minimizing the rate of deterioration. Therefore, in theselection of suitable materials and appropriate processing methodsto satisfy functional performance and structural requirements inaccordance with MIL-S-8512 and AFSC Design Handbook 2-6, considera-tion must also be given to those materidls, prucessiiigmethods aiidprotective treatments which reduce service failures due to deter-ioration of parts and assemblies in service. Deterioration modeswhich contribute to service failures include but are not limitedto pitting corrosion, galvanic corrosion, exfoliation corrosion,stress corrosion, corrosion fatigue, thermal embrittlement, frettingfatigue, oxidation, hydrogen embrittlement, weathering and fungusgrowth. In the entire design phase, attention shall be given toprecautionary measures to minimize deterioration of individualparts and assemblies as well as the entire system. Precautionarymeasures include proper selection of materials, limitations ofdesign operating stresses, relief of residual stress levels, shotpeening, heat treatments which reduce corrosion susceptibility andprotective coatings and finishes.

5.1.2 General desiqn guidelines for corrosion prevention.

5.1.2.1 Exclusion of water. The design of the system shall besuch as to prevent water leaking into, or being driven into, anypart of the system interior when either in an operating or travel-ling configuration. All windows, doors, panels, covers, etc., shallbe provided with sealing arrangements such that the entry of wateris minimized when these items are correctly closed. Particularcare shall be taken to prevent wetting of equipment, and heat andsound proofing materials. Sharp corners and recesses should be

7


MIL-STD-808A’(USAF) ,,, .,,

avoided so that moisture and solid matter cannot accumulate to, “initiate localized attack. Sealed floors with.suitable drairiageshall be provided’ for storage compartments, enginecompartrnents, “’ ~~0,and other areas in the design that could collect.and retainwater.’,.

“5,1,2;2 Ventilation.,.

Ventilation shall be sufficient to prevent,, moisture retention’ and buildup. .,

.,,,. ,,

5.1.2.3 Drainage. Drain holes shallbeprovid,edto prevent collection:or entrapmentof water or other unwanted fluid in areas’where ex-elusion is impractical. . All designs shall include considerations,

for the prevention of water or fluid entrapment and insure that ‘.,drain,holes are.located to ef,fectmaxirnum drainage of acfurnulated,

,,

‘“fluids. The number and location of drain,holes shall be sufficient ‘ ,’.,

to permit drainage of all fluids when the unit is in a 10 degreeincline in any plane. The minimum size of the drain,holes shall be0.25 inch (6.35 mill imeters’ (mm).

5.1.2.4 Dissimilar metals. Use of dissimilar metal< as definedby MIL-STD-889, in contact shall be”limited to applications wheresimilar metals cannot be used due to peculiar design requirements.When it is necessary to use dissimilar metals in contact, the metalsshall “be protected against galvanic corrosion. Galvanic corrosioncan be minimized by interposition of a material which will reducethe overall electrochemical potential of the joint or by inter-position of an insulating or,corrosion inhibiting material such assealants, and organic coatings. “

o5.1.2.5 Insulating materials. When thermal oracoustical insulating ‘,materials are required, they,shall have either a permanent baked ‘“on water repellant bindersystern’ or s“uitabl,yprotected with sealantto prevent any moisture absorbed by the material from contactingthe metal structure. The metal towhich the insulation materialis attached shall have a complete finish system of primer and top-coat prior to application. After installation, all edges shall besealed with sealant material conforming to MIL-S-8~733.

5,1.2.6 Hinges. All hinges used on support equipment shall conformto MIL-H-9850 and Supplement 1 thereto. The appropriate militarystandard drawing shall be selected from Supplement 1 to MIL-H-9850with the following exceptions:

Aluminum alloyhinges, leaves and pins,’shall be used forattac~rnent to magnesium or aluminum alloys only (Material A). Seealso MIL-STD-889 on dissimilar metals.

b. Hinges that are attached to low carbon steel shall be eithercorrosion resisting steel, leaves and pins, and shall be mechatlically

fastened only (Material C) or low carbon steel leaves, (Material D),plated or galvanized in accordance with Table I and Table IV by the

8


MIL-STD-808A(USAF)

hinge manufacturer after forming and other manufacturing opera-

0

tions have been completed. The hinge pins shall be wear resistantnylon conforming to L-P-410. The nylon pins shall be secured inthe hinge nodes with button head 5000 series aluminum fasteners orbutton head nylon fasteners.

c. The design of the selected hinge shall have sufficientclearance from the outer face of the knuckle to the cutout of theopposite leaf to prevent the removal of paint finishes when thehinge is rotated through the entire range of its pivotal movement.

5.1.2.7 Storage compartments. Storage compartments of supportequipment for hoses, ducts, tools, electrical cables, etc. ,shallbe protected from abrasion with’a pressure sensitive transparentadhesive backed polyurethane tape. The tape shall be applied oversurfaces that have the final protective coating system applied.

,, 5.1.2.8 Battery areas. Battery compartments not constructed ofleakproof and corrosion resistant materials consisting of MIL-R-46068 polyester resin and MIL-M-43248 glass fibers or equivalent,shall have the battery compartment and adjacent areas which aresubject to vapors and spills coated with a suitable polyurethanecasting resin.

5.1.2.9 Exhaust systems. All components of exhaustding mufflers, spark arrestors, resonators, pipes, c’

●stops, bolts, nuts, fasteners and specially designedconstructed of a suitable stainless steel alloy shal”

systems inciu-arnps,weathercomponents notre~uire the—

application .ofa finishing system. All exhaus~ systems and componentsconstructed of low carbon steel shall be coated on both sides witha’commercial grade aluminum coating or equivalent coating materialthat is suitable for high temperature application.

5.1.2.10 Nonstandard ferrous hardware. All ferrous (other thanstainless steels) hardware such as U-bolts, fasteners, etc., notconforming to MS, AN, NAS or ANA Standards shall be cadmium platedor zinc plated in accordance with

5.1.2.11 Closed hollow members.hers, except those that transportdrainage provisions at the lowestmembers, drain holes will be provmembers shall have drain holes inpermits. Otherwise, the drain ho-

Table I or Table IV.

All closed hollow structural mem-fluids or gasses, shall have waterpoint of the member. For horizontalded on the lower side. Verticalthe bottom end cap if the designes shall be located on the side

of the member at the lowest possible point. The drain holes shallbe a minimum of 6.35mm (0.25 inch) in diameter. Drain holes in ver-tical hollow members shall be closed with removable Wellnut plugsor equivalent devices. All drain holes in horizontal hollow membersshall be left open. The interior surfaces of vertical and horizontalhollow members shall be protected against corrosion in accordancewith Table 11.

9


.,,’,

MIL-STD-808A(’USAF) “ , ,~~,.

5.2 Documentation. When required by the contractor pu’rchaseorder,“’thefollowing documents shall be furnished by the manufacturer to theprocuring agency for review and ’approval by theengineeringactivityhaving responsiblity, for a system or item. ~~ ,.

5.2.1 Finish process specification. The contractor shall prepare &finish process specification in compliance with MIL-STD-490 which ~~identifies the specific cleaninq Processes and finishes.to be used onthe various substrates of all p~rts, components and complete assembliesto protect them against corrosion in the environments to which theywill be exposed.’ After .thedocument has been approvedby the resPon- ‘sible Air Force engineeri ng.activity, the requirements contajned therein.shall be included in all applicable production drawings. The ‘finishprocess specification shall also include the following data.

a. Designation of a person or persons in the design, engineering,and manufacturing departments as focal points for corrosion control..,

b. Data justifying the contractor’s materials selection andfinish processes and materials selection criteria shall be presentedand any special testing requirement’s shall be identified to insureacceptable levels of protection against corrosion.

c, Any company materials and finish ’process specifications shallbe cross-referenced to any applicable Federal or Military specifications.

d. Any special considerations concerning system or item peculiarity,“nuclear effects, chemical warfare agent effects and environmentalconcerns shall be stated and defined.

e. Special ’finishes for special areas such as engine compartments,ecwiDment and tool storaqe compartments, battery compartments, surfacesexposed to high temperat~res, surfaces exposedlaminates and exterior markings.

f. Surfaces” not to be treated or coated.

9. Sealing requirements in the following

1. Environmental sealing.

2. Sealing for containment of fuel.

to engine exhaust gases,

areas:

3. Sealing for containment of electrolytes.

4. Firewall sealing.

5. Heat resistant sealing.

,,.

,,‘.

6. Fay surface sealing. ‘o7. Permanent fastener sealing.


MIL-STD-808A(USAF)

8. Drainage provisions.—

9. List of sealing materials and process specifications tobe used.

5,2,2 Detailed-drawings. The contractor shall furnish detailedengineering drawings of parts, components and assemblies that clearlyidentifies the specific types of finishes to be used on the equipment.The finish system shall be identified on the drawings by the finishcodes presented in this standard. All engineering drawings shall beprepared to Level 3 (Production) in compliance with DOD-D-1OOO.

5.2.2.1 Supplementary notes. When a specification offers options, ;supplementary notes on the drawing shall be required to complete theidentification of a finish.

5.2.2.2 Manufacturers options. If the finish of a part is to beoptional with the manufacturer, the basic code for a specification maybe specified. The amount of freedom a designer or manufacturer has toselect types, classes, etc.,however, is still governed by the finishspecification or the particular material specification.

5.2.2.3 Multiple finish. A drawing which must reflect more than onefinish or a partial finish, shall contain codes and notes to identify

a the finishes-with the appropriate areas or zones.

5.3 Cleaninq requirements.

5.3.1 Precleaning. Prior to subjecting materials to cleaning processesinvolving mechanical or chemical removal of metal, all surfs’ces sha?l becleaned free from preservative oils, cutting oils, greases, weldingfluxes, soldering fluxes, and other soils.

5.3.1.1 Organic contamination removal. Organic soils shall be removedby emulsion cleaning, alkaline cleaning, vapor decreasing or solventcleaning, whichever is more applicable to the nature of the soil to beremoved. The materials and processes used shall be completely characterizedand controlled to insure no corrosion effects. Vapor decreasing shall bedone with 1,1,1 trlchloroethane conforming to MIL-T-81533 or O-T-620. Thecondensate of each vapor decreasing unit shall be sampled weekly to determinethe pH. If an acid reaction is found, the use’of the installation shall bediscontinued until the acid condition is corrected and also available treatedparts examined for corrosion effects. If corrosion effects are noted, all parts

11


,. ’,.

,, .,’.’,,:.

,s

MIL-STD-808A(USAF) ,’ ,,,, ,,

processed during, interval.of cleaning sha’11be 100 percent inspected.Materials used for hand cleaning shall leave no contaminating residuesor react with cleaning solvents. ‘.Solvents for hand cleaning shall bel,l,ltrichloroettianeconforming to MIL-T-81533 or O-T-620, aliphatic‘petroleums such as naptha conforming to TT-N-95, acetone conformin9 ‘.to O-A-51, methyl-ethyl-ketone conforming to TT-M-261, et~.’ solventsshall be wiped from thepart and shall not be allowed to dry on the ‘“.,:,part. , ,.,

5.3~1 .2 Flux removal . Soldering ;,wel,ding,and brazing.fluxes shall , “be completely removed: Ho,twater,,alcohbl, or dry cleanin9 solvent,sconforming to P-D-680, Type II, shall’be used, as may be appropriate for’the flux or by a method which will not attack metals it’contacts” MethY~.or wood alcohol (methanol) shall not be used for magnesium and its alloys.Acid or alkaline materials shall not be used. ,,

5.3.2’ Cleaning of surfaces.,,’

5.3.2.1’ Aluminum and its alloys. Aluminum and its alloys shall”be eitherchemically,or mechanically cleaned. The use of uninhibited alkalinematerials suc,h as sodium hydroxide solutjons, and of abrasives containingiron and its oxides, steel wool and wire, and copper alloy based wire,which may become embedded and accelerate corrosion of aluminum alloys‘shall not ,be used for cleaning. Materials conforming to MIL-C-5410,MIL-C-43616, or MIL-C-25769 shall be used for ch,emical cleanin9. Other “materials or methodsma.y be approved for use..

5.3.2.2 Low-strength steels. Steels of Rockwell hardness less than C40shall be cleaned in accordance with TT-C-490 or by other suitable processes:

“.

5.3.2.2.1 Abrasive blasting. Machined parts and sheet.metal thinnerthanO .0625 inch (1$ gage U.S. standard) shall not be blasted. Blastingwill not be required on component parts of equipment (such as track chainassemblies, track roller assemblies, interiors of welded type box sections,blades, bowls, and buckets for dozers and crane shovels, interior of drumsofcement mixers, and interiors of aggregate driers) which are painted forprotection during Iimited. storage or from which the paint will be worn offalmost immediately when the equipment is ’placed in use. However, the sur-face to be painted shall be dry and free from loose mill scale, oil, grease,dirt and rust.

.,,5.3.2.2.2 Zinc surfaces. Electroplated’ zinc coated steel surfaces, hot-,dipped galv,anizedzinc coated steel surfaces, mechanically applied zinccoated surfaces and solid zinc surfaces shall be solvent vapor cleaned,solvent washed, alkaline detergent cleaned.or,a combination of alkalinedetergent and solvent cleaning. When aqueous alkaline detergent solutionsare used for cleaning zinc surfaces, they shall be immediately anpthoroughly rinsed with clean water.

12

,“.

. .

0

,.

,0

a


MIL-STD-808A(USAF)

o 5.3.2.3 tiiqhstrenqth steels. Steels, including corrosion andheat resistant steels, hardened .by thermal treatment or by coldworking to full or surface hardness level of Rockwell C40 and higher,shall be mechanically blasted for rust or scale removal.

5.3.2.4 Corrosion and heat resisting steels. Except as indicatedin 5.3.2.3, corrosion and heat resisting metals and alloys shallbe cleaned by suitable chemical or mechanical processes, or combin-ations thereof. However, materials which are susceptible to damageby hydrogen shall be mechanically cleaned. For metals and alloyswhich are sensitive to contamination by gaseous constituents suchas hydrogen, oxygen, and nitrogen, and are exposed to atmospherescontaining such materials during heat treatment, etc., sufficient

metal shall be removed during manufacture to eliminate the contain-. ,.inated material. Verification of elimination shall be done. Pro-cedures for and verification of complete removal of contaminatedmaterial shall be accomplished. Where chemical cleaning methods

.,

are used, the materials shall not result in any attack of the sur-face, either pitting or intergranular. Daily determination forthis behavior shall be made using a microscopic method with examinationat a magnification which will clearly establish the condition. How-ever, whenintermittent cleaning operations exist, the frequencyof examination shall be reduced accordingly but shall not be lessthan weekly intervals. Parts with pitted surfaces or showing inter-

0

granular attack shall be rejected.

5.3,2.4.1 Passivation treatment. The final operation for 200,300, 400 series and precipitation-hardened corrosion resistantsteels shall be a passivation treatment in accordance with QQ-P-35. -Carburized or nitrided surfaces shallnot be passivated. The”veri-fication of the surface passivation shall be in accordance with MIL-STD-753 for all parts.

5.3.2.5 Magnesium and its alloys. Magnesium and its alloys shallbe cleaned in accordance with MIL-M-3171.

5.3.2.6 Rinsing. When either acid or alkaline materials areemployed, the cleaned parts shall be given a thorough rinse withwater of adequate purity to remove all acid or alkali prior tofurther treatment and not leave any residual contamination.

5.4 Surface treatments for metals.

5.4.1 Aluminum and aluminum alloys. All aluminum and aluminumalloys ’including clad aluminum alloy surfaces used in load bearingstructural applications shall be anodized to produce coatings con-forming to type II of MIL-A-8625. All 7000 series aluminum alloysused in any application shall be anodized to produce coatings con-forming to type II of MIL-A-8625. All 2000 series aluminum alloys

13


I1,

,-..

used in any application. shall be “anodized to produce ”coatin9s.con- -“ ‘“ “ ‘‘forming to type I or type II of MIL-A-8625. All 5000 and 6000 ‘,., ,,. ,*serjes aluminum-alloys may be anodized in ac.c~rdance’with tYPe I :.:,of MIL-A-8625 or may be chemical conversion coated in accordance ~~ “;

,,

with class 1A of,MIL-C-81706. Parts subject to ,wear, abrasion, ‘ ‘erosion, and severe corrosion conditions shall be anodized. ,“Chemical.conversion coated parts shall not @ used wh~.re:ubsequent”Organic ‘ , .finishing is not.specified.

,,,. ,,.. ,’ ,“,,.

5.4.1.1 Electrical parts.,,

Chemical films ’conforming~o Class 3 , , ,,,,treatment of MIL-C-81706 shall be used”onelectrical’p arts Where .,. ,.,, ,,,,,~~,’

low electrical resistance: is required. Table 11] gives electrical.’ , ,:conductivity properties of other conversion’coatings and ’surface ., ~~ ~passivation processes.

,, ,..

5.4.1.2 Touch-up. Unless otherwise specified, all surfaces whichhavethe anodic or cherhical conversion codings, removed or damaged’ ~shall be touched up only where, required with MIL-C-81706 materials

,,

approved for Class 1A treatment by Method B application (brush or .“swab). (See 5.7.3.7).

5.4.2 Magnesiumalloys. All magnesium alloys shall be surface ‘treated or.reteive an anodic coating in accordance with MIL-M-3171or MIL-M-45202. Anodic coatings applied in accordance wi,thMIL-M-. ~~45202 shallbe used for parts subject to wear, erosion, or abrasion.

5.4.2.1 Touch-up. All surface)s which have the anodic or chemical” , ~~film removed or damaged shall be touched up, :using eitherthe Type I ‘

“e

or Type VI process of MIL-M-3171.,,

5.5, Inorganic coatings. ,: ,,

5.5.1 ,Metallic coatings application. Metallic coatings shall be .applied by electrodeposition, vacuum deposition; mechanical deposi-tion, metallic compound deposition, or conventional spraying methodsin conformance to applicable specifications. Where thermal appli-cation processes are used, in no case shall the temperature of thepart be raised to adversely affect the mechanical, or corrosion andstress corrosion properties of the part and if the part is shot-peened prior to,coating, shall not impair the effectiveness of theshot-peening operation. ,.

5.5.1.1 Limitation on use of protective metallic coatings. Softsurface coatings such as cadmium, nickel-cadmium, and aluminum shallnot be used for sliding or wear applicat~ons. Cadmium plated sur-faces shall not be used in applications where surface temperatureexceeds 450°F (232°C). The use of chromium plating for corrosion

14


MIL-STD-808A(USAF)

oprotection of alloy steel wear surfaces in interior environmentsis acceptable. For applications involving exposure to the exterior.environment chromium plating shall be considered an acceptablecorrosion protection of alloy steel wear surfaces only when the ,.

chrome plating. is periodically lubricated (fluid or grease typesonly) or a 0.04tnn (0.0015 inch) minimum layer of nickel plating isapplied under the chrome. All chrome plated steel parts used infatigue applications shall be shot peened prior to plating. Chromeplated surfaces shall n$t be u~ed in applications where servicetemperatures exceed 700 F (370 C). , ,“

5.5.1.2 Coatings for corrosion control. Non-corrosion resistant:steels shall be coated as follows:

a. With cadmium by vacuum deposition in accordance with MIL-C-8837 .

b. With aluminum by vacuumC-23217.

With cadmium or zinc bywith f%L-c-81562.

deposition in accordance with MIL-

mechanical deposition in accordance

With electrodeposited zinc conforming to QQ-Z-325 or e“depos!~ed cadmium conforming to QQ-p-416.

● With aluminum and aluminum alloys by metallic compounddepos~~ion in accordance with MIL-C-81740.

ectro-

f. With ion vapor deposited aluminum in accordance with MIL-C-83488.

9. With metallic-ceramic coating conforming to MIL-C-81751.

Steels heat treated to an ultimate tensile strength of 1230 megapa-$cals (mpa) (180,000 psi) or above shall not be coated with zinc.Electrodeposited cadmium may be used on high strength steel, 1230mpa (180,000 psi) Ultimate Tensile Strength (UTS), provided the pro-cess can be demonstrated by satisfactory behavior of specimens pre-pared and tested in accordance with ASTM F519 using Type 1A notchedround bars, stressed in tension, under constant load. Unless other-wise specified, to assure continuous control of the process to pre-vent detrimental hydrogen embrittlement during production, thesatisfactory behavior of specimens, prepared and tested in accordancewith ASTM F519, shall be made for each production lot of coated steelparts. If evidence of hydrogen embrittlement of specimens is shown,the use of the process shall be discontinued until the process con-ditions are corrected.

15


.,.

1.

,, ..,

.’

5.5,1.3 Cadmium plating and coating..,Cbclrnium’’plating shall,be

in accordance with QQ-P-416. Cadmiunvcoatings shall “be in accordance. with MIL-C-8837,0r MI-L-C-81562.”’Unless otherwisespecified, cadmium’coating orplating shall be Class 2 thickness0.008mm (0.0003 inch). Cadmium plating and coating shall not be:use~’in the following application., .’

,,

a. Parts which may be in ’contac~ with hydraulic fl,uids, fuels,lubricating oil and other petroleum base products.

,-..!’,

b. Parts in frictionalbe a detrimental factor.

,.

‘c. In confined spaces,which give off corrosive and

d. Parts which will be

contact where gouging orbinding,.

in the presencedamaging vapors

subsequently so”

,,,

of organic mater

dered.

my

als

5.5.1 .3.1 Parts which cannot be processed to completely removepre-plate and plating fluids shall be vacuum coated in accordance

.. .

,. ,,, ‘o,,. “,

,,

,’

with MIL-C-8837 or mechanically coated in accordance with MIL-C-81562.

5.5.1 .3.2 Cadmium, plated or coated partsshall be supplementarychromate treated in accordance with MIL-C-17711”.

5.5.1.4 Zinc plating and coating. Zinc plating shall be in accor-dance with QQ-Z-325. Mechanically applied zinc coatings shall,bein.accordance with MIL-C-81562. Hot dipped galvanized ”coatings’forlow carbon structural steel such as beams, channels; etc. shall bein accordancewith ASTM A123. Hot dipped galvanized coatings forlow carbon steel sheet shall be in accordance with ASTM A525. Zincplating and mechanical lyapplfed zinc coatings shall be a minimumthickness ”of O.025mm (0.001 inch). Hot dip galvanized coating forlow carbon steel structural members shall be a minimum thicknessof 0.086rmn (0.0034 inch), Hot dip galvanized coating for low carbonsteel sheet shall be a minimum ofG90 in accordance with ASTM A525.

‘a,“

Zinc coating and plating shall not be used in the fol~owing applications.

with structural

where corrosion

Where the temperature of coated parts or surfaces they arein co~~actwith exceed 500% (260q).

b. Parts. in contact

c. Parts in contactwith normal functioning.

,.

fabric surfaces,

products might interfere

d. Grounding contacts where the increased electrical resistanceof zinc-plated surfaces would be objectionable.

Parts and assemblies constructed of steel heat treated toan ul~~mate tensile strength of 1230 mpa and above (180,000 psi).

*

16


MIL-STD-808A(USAF)

●5.5.1 .4.1 Inorganic zinc rich primer. Inorganic zinc rich primershall be in accordance with NIL-P-38336 or MIL-P-23236 Type 1, Class3. The primer shall be applied only tb low strength stee~~ ~50 KSIY ,UTS or below, that has been abrasively blasted to a white metalcondition. Inorganic zinc rich primer shall be applied to a mini-mum dry film thickness of 0.090mm (0.0035 inch). The same limitations .apply to the use of inorganic zinc rich primer as specified for zincplating, mechanically applied zinc coating, and hot dip galvanized .coating in paragraph 5.5.1.4.

5.5.1 .4.2 Zinc plated surfaces, mechanically zinc coated ”surfaces,hot dip galvanize coated surfaces and inorganic zinc rich primercoated surfaces shall be chromate treated in accordance,with MIL-C-17711 prior to application of any organic coatings.

5.5.2 Coatings for functional purposes. Coatings for functionalpurposes shall be as specified in 5.5.2.1 through 5.5.2.3. Unlessotherwise specified, w}~ere the selected coating-does not provideprotection against corrosion for the basis metal and the coatedsurface or portion thereof is exposed to corrosive environment, anundercoat of 0,025rTimto 0.040mm (0.001 to 0.0016 inch) of nickel onsteel and zinc parts or an undercoat of 0.020nunto 0.0251’mn(0.0008to 0.001 inch) nickel on copper alloy parts in accordance with QQ-N-290 shall be used. The same restrictions that are applicable tosteel parts, coated by chemical or electrochemical deposition and

●having’ a tensile strength of 1230 ritpa(180,000 psi) and over, asstated in 5.5,1.2 shall be applicable to coatings for functionaluse except for chromium (see 5.5.2.1).

5.5.2.1 Chromium plating. Chromium plating shall be used for allsurfaces subject to wear or abrasion, except where other surfacehardening processes are used such as nitriding, carburizing orwhere other wear and abrasion resistant coatings are specified.Chromium plating shall be in accordance with QQ-C-320, Class 2(engineering) with a minimum of 0.050nvn (0.002 inch). When chrom- “ium plating is specified, it shall be used on only one of two con-tacting surfaces.

5.5.2.2 Nickel plating. Nickel plating shall be used for the fol-lowing applications only:

(a) Where temperatures do not exceed 1000OF (530%) and othercoatings would not be suitable.

(b) To minimize the effects of crevice corrosion with unplatedcorrosion-resisting steel or stainless steel in contact with otherstainless steel.

17

(c) As an undercoat for other functional coatings.


.,,“,’,,.

,. HIL-STD-808A(USAF) , .,

(d) TO restore “dimensions‘by buildinguP worn’.surfa~?s” ‘“

(e) ,Fo,rresistance to sanderosion. : ~~ ., ~~ ~~,“. .’,.

Where’nickel plating of parts or surfaces”is ~Pecif”ie~~”it shall be’ .such as to produce coatings in accordancewith QQ-N-290.’ Nickel ‘,plating”, except where used as an underplating, shall be Class 2,(engineering) with a.minimum thickness of 0.076MT( 0.003 inch)”

“.5.5.2.2.1 Where applications require low residual tensile stress’in’th.e.plated nickel,plating shall,be inaccordance with,MIL-P-27418.

,’,,

5.5.2.2.2 Electroless nickel coatinq. Where specified, electrolessnickel coating shall be in accordance with MIL-C-26074.

5.5.2.3 Aluminum coatinq. Aluminum and aluminum alloy coatingsshall be used’where the properties of these materials present dis- .tinct’protective advantages in comparison with.o her coatings and

iplatings at”temperatures in excess of 450% (232 ) surface .treat-ment of aluminum. and aluminum alloy coatings, when required> s,hallbe as specified herein (see 5.3). Aluminum and aluminum alloy coat-ings shall be in accordance with,MIL-C-81740, MIL-C-232170r MIL-C-83488. ,.,,

‘1------5.5.3 -----J..71:.JlwIyailiCIiulmwbatIIL CG~tifi~S.

5.5.3.1. Phosphate treatments. Phosphate treatments may be usedonsteel surfaces where it is impractical to apply metallic coating.Phosphate treatments, that conform to DoD-P-16232 or TT-C-490; shabe used.

5.5.3.2 Hard anodic coatings for aluminum and its alloys. Hard.anodic coatings shall conform to Type 111 of MIL-A-8625, They sha”be used on parts where the functional purpose is to provide a wearresistant surface. Hard anodic coatinqs shall notbe usedon partswhere subject to rework and

5.6 Shot peening and othertreatments. Shot peen,ing, “compressive stress-inducing

fatigue behavior and stresscontrolled procedur~s. T~eshall not exceed 50 F,(10 Cthe stressed surface of the

1

1

to overhauling.

residual compressive stress-inducingn accordance with,MIL-S-13165, and othertreatments’rnay be used to obtain improvedcorrosion cracking resistance, usingmaximum temperatures for use of any partless than the recovery temperature of

material ~nvolved. Procedure detailsshall be prepared and listed on the applicable drawings or applicablereference ~ocuments for parts. Specific attention shall be paid touse of recognized procedures, equipment, materials, and control methods.


MIL-STD-808A(USAF)

●5.6.1 Processing. Steel parts plated with hard coatings, such asnickel and chromium and combinations thereof, shall be processedas follows:

5.6.1.1 Plated parts below Rockwell C40 hardness and subject tostatic loads or designed for limited life under dynamic loads, orcombinations thereof, need not be shot peened prior to plating orbaked after plating.

5.6.1.2 Plated parts below Rockwell C40 hardness which are designedfor unlimited life under dynamic loads shall be shot peened in ac-cordance with MIL-S-13165 priorto plating. Unless otherwise speci-fied, the shot peening shall be accomplished on all surfaces forwhich the coating is required and on all immediately adjacent sur-faces when they contain notches, fillets, or other abrupt changes ofsection size where stresses will be concentrated.

5.6.1.3 Plated parts which have a hardness of Rockwell C40, orabove, and are subject to static loads or designed forunder dynamic loads, or combinations thereof, shall be3750 + 250F (191°C ~4°C) for not less than 3 hours, w“or as soon as practicable after plating.

5.6.1.4 Plated uarts which have a hardness of Rockwel

limited lifebaked atthin 4 hours

C40, orabove, and are designed for unlimited life under dynamic loads,

●shall be shot peened in accordance with MIL-S-13165 prior to plating.Unless otherwise specified, the shot peening shall be accomplishedon all surfaces for which the coating is required and on all imme-diately adjacent surfaces when they contain notches, fillets, orother abrupt changes of section size where stresses will be concen-trated.. The plated parts shall be baked at 375° + 25°F (191° + 4°C)for a minimum of 3 hours within 4 hours or as soo~as practica~leafter plating.

5.6,2 Platinq finish selection. Plating finishes for applicationto ecwipment or Darts thereof shall be in accordance with Table I.Specific finishes shall be selected with due regard to surface class-ification (type 1 or II) and the base metal to be protected. Platingfinishes are designated by the letter “P” followed by a number. ThusP-102 is a plated nickel finish for use on iron or iron-base alloyparts to be subjected to type I exposure, As specified in Table Ifinish .P-102 consists of O.O1OMM (0.0004 inch) (minimum) nickel over0.019nrn (0.00075 mil minimum) copper undercoat over the base metal.Other metallic coatings shall be selected in accordance with Table IV.

5.7 Organic coatings.

5.7.1 Selection. The selection of organic coatings shall be in

19


,,,

MIL-STD-808A(USAF)

,.,’

,.

.,’

,..

,’,

,, ,,,,,

accordance with this standard and as otherwi se.di~ectedby the . , ,.contract or purchase order. .0,,

5.7.2 Facilities and equipment for organic coatings application.,.

5.7.2.1 Facilities. The facilities in which organic coatings areapplied to support equipment,- including complete assemblies, subassembliesand parts, “shallmeet the ventilation’ requirements of AFOSH Standard ‘ ‘161-2, the fire protection standardsof the National Fire pro- ‘tection Association (NFF’A)and AFM 88-15 and the general”safetyprecautions ofT~O. 42A-~’-l. The engineering activityis responsible. .,, ,: ~for approval of organic coatings application facilities. ,,

5.7.2.2 Environmental controls. All organic coating materials shallbe applied at environmental conditions (temperature and humidity) inaccordance with T.O. 1-1-8, Application of Organic coatings.

5.7.2.3 Applicationequipment. Application eqyi’pment shall be’eitherconventional air atomization, airless spray or airless electrostaticsspray equipment. The spray equipment, the air supply and the’spray“booths shall be.maintained in accordance with T.O., 1-1-83 Application OfOrganic, Coatings.

5.7.3 Organic coatings application. ‘,,, ,.

~.~:~.~Mii’t~i-iFil. Unless 6thertitsiespecified, 511 niaterials”iisediii 0the finishing and coating,of support equipment and parts shall conform ,

to the requirements of the applicable specifications, and as specifiedherein. The’addition,to the paints of any materials other thanthinners is prohibited. Contractors shall conduct such check testsas necessary to ensure suitability of the materials.

.5.7.3.2 Mixing. Finishing materials shall be prepared for applicationunder clean conditions with clean ecwii)ment. Coatirvamaterials shallbe allowed to equalize to standard conditions before-mixing. The materialsshall be thoroughly stirred or shaken prior to thinning ,ormixing andapplication. Mixing shall be controlled by weight, volume, orviscosity to ensure complete uniformity of all material prepared foruse. The mixing of paints of the same specification but suppliedby different manufacturers is prohibited to avoid problems ofincompatibility in the liquid and drying phases. Every effort shouldbe madeto assure that a primer of a single manufacturer is employed ,on the item to be finished and similarly, the topcoat should berestricted to a product of a single manufacturer,

5.7.3.3 Selection of thinners. The thinner required in the applicableprocess specifications shall be used. Adjust the amount of thinner,as necessary, to obtain the prescribed thickness of coating, but avoidexcessive thinning which could produce runs and sags. Temperature andhumidity conditions should be determined and thinning adjusted asrequired by the applicable specification, for such atmospheric conditions. oOther thinners as recommended by the paint manufacturer for his particularproduct may be used.

20


.

I’lIL-STD-808A(USAF)

5.7.3.4 Storage of paint materials. Support equipment finishing

@

materials shall be stored in a cool, dry place, indoors if possible,and should notobe stgr~d at a temperature lower than 500F (lo%) orhigher than 80 F (27 C) for long periods and may approach, but shouldnot exceed, 100% (38%) for shorter periods not exceeding 4 months.Where high temperatures are unavoidable, the quantity on hand shallbe held to a minimum, since temperatures exceeding 100% (38%) willproduce marked degradation of certain of these materials.

5.7.3.5 Cleaninq, general. The meticulous cleaning and surfacetreatment of support equipment prior to all painting operationscannot be overemphasized, since this factor is of prime importancein obtaining a satisfactory paint finish. Reclaimed paint thinneror other reclaimed thinners shall not be Used’for cleanin9 purPoses>since these materials may leave soils which will cause poor adhesionof the next coat. All abrasive or foreign particles must be removedafter sanding or cutting operations before application of paint-typematerials. Cleaning shall be accomplished with solvents, detergents,and processes which have no deleterious effect on the surface and whichproduce surfaces satisfactory for receiving subsequent finishes.Cleaning materials which may be effective against one type of contam-inant may be ineffective against others. Therefore, multiple cleaningprocedures may be required to provide the required water-break-freesurface. -Acid cleaners or surface treatments shall not be allowed tocontact materials susceptible to hydrogen embrittlement. (See 5.3)

5,7.3.6 Tests for surface condition. The following tests shall beconducted on the support equipment before surface retreatment and painting.

5.7.3.6.1 Reaction of surface. The surface shall have a neutral orslightly acid reaction. Red litmus paper moistened with distilled waterwhen applied to the surface shall not turn blue, otherwise a 0.20 to0.25 percent chromic acid solution shall be applied and shall be permittedto remain on the surface for 2 to 5 minutes followed by a water rinse,and the Surface then wiped dry with clean, lint-free cloths. Thesurface shall then be retested with red litmus paper.

O

.

5.7.3,6.2 Water-break test. Representative areas of the surface to betreated shall be tested for ability to support an unbroken film of“distilled water. A mist of distilled water shall be atomized on thesurface under test, representative of the larger surface being tested,employing any convenient small atomizing device. If the water gathersinto discrete droplets within 25 seconds, in other words, if the surfaceshows a “water-break” within that time, then the surface shall beconsidered as having failed the test. If the water forms a continuousfilm by flashing out suddenly over a large area, then this shall be con-sidered indicative of the presence of an impurity on the surface,such as free alkali, residual detergent, etc., and the surface shallbe considered as also having failed the test. If the water dropletscoalesce into a continuous film of water without a sudden flashout andform a lens, then the surface shall be considered as having satisfac-torily passed the water-break test.

21


,, .,.,.. .

5.7.3.7 ,Manuallyapplied surface treatment and touchup. For suppo~t “’,,

equipment already assembled, manually applied surface retrea~~nt isrequired on all surfaces before’pai,nting. For aluminum surfaces;. “ aMIL-C-81706’manuallyapplied surface ’retreatmeritis ’required. For :magnesium surfaces ,retreatinentfljsrequired. For magnesium surfaces,MIL-M-3171,Type VI, or other approved eqqivalent,manuallyapplied ~~surface treatment is required. For other metals, :the contractor s$alldetermine the necessary treatment to assure adequate paint a~hesion.Manually applied,surface retreatment shall.be applied after final cleaning’ :and draining of the surface preferably within 8 hours but not more than72 hours prior toapplication of the fi,ni’sh.Special precaution shall “ ~~be’taken where treated magnesium surfaces are scratched., Such scratched ,’areas inadequately-surface treated shall be ‘carefully touched Up’’with ‘ :MIL-M-3171 manuallyapplied chemical treatment, .or approved equivalent,prior to coating application, otherwise bubbling would be encounteredwhen coatings are applied to-these surfaces. (See 5.4.1.2,and 5.4.2 .1.)

5.7.3.8 Aluminum and magnesium surfaces shall reexamined to determinethat the optimum thickness of surface treatment has been applied. ~ ~Paint will not bond to treated aluminum surfaces which are too dark, norwill it adhere to the brown powdery,surface of excessively treatedmagnesiuti or aluminum.

5.7.3.9 Final preparation for painting. After application, anddrying, of the surface retreatment the surface shall be flushed with, ‘cl’earwater and tested in accorciance with 5.7.3,.6, If additionalcleaning is<necessary, it shall be done in such inanner,that t.hesurface’treatment will not be”damaged.

5.7.3.10 Special precautions. Paintings hould “begin irmnediatelyaftercleaning to ensure application to a water-break free surface. Solventcleaning of ‘thesurface. is a requlriment if there is a breakin thepainting sequence on the support equipment ofovernight,’or longer.Additional cleaning consisting of at least an additional wash withsolvent followed by a wash with detergent solution in hotwater orsteam will usually be required. A final hand wipedown shall be per-formed irrtnediatelybefore painting the support equipment to ensurescrupulous cleanliness and a proper paintable surface. All surfacesshall be thoroughly dry before receiving paint-type materials, takingspecial precautions to assure dryness of crevices, faying,surfaces, anddifficulty accessible areas.

5.7.3.10.1 General requirements. Surfaces shall be conditioned tostandard temperature before painting. Unless otherwise specifiedherein or in the detail process specifications, paint-type protectivecoatings may be applied by spraying processes or any other approvedmethod which will “ensure the application of a smooth, continuous filmthat is free of imperfections, such as dried overspray, runs, sags,blisters, ”or orange peel.

22


MIL-STD-808A(USAF)

5.7.3.11 Production spray test panels.

a

Prior to the spraying operation, ‘ “the suitability of materials for the entire system shall be determined . .experimentally on test panels. The panels shallbe coated underprevailing conditions with the finish system that is to be’applied .“ ;to the support equipment. If the finish system applied to theexperimental panel is satisfactory, then full scale operation may begin.Defects found in the experimental app~ications such as b~ushing~ poor .adhesion, excessive orange peel, sagging, etc., shall be correctedprior to large scale application.

5.7.3.12 Final dry of the finish. The support equipment, afterpainting, shall be permitted to dry in a dust-free ’atmosphere for asufficient time prior to moving the equipment, to insure that the paint

.,

is adequately dry and to avoid damage to the finish. Painted supportequipment or parts shall also be protected from condensing moistureand rain during the first 22 hours after painting, This time may varysomewhat depending on the temperature and type of paint used. Theengines of the painted support equipment shall not be operated forat least 48 hours after painting.

5.7.3.13 Application of subsequent coats to previously painted surfaces.Assemblies and subassemblies that have been previously painted shall becleaned prior to further application of paint. A cleaning agent thatwill not adversely affect the existing paint and provide a surface thatwill be satisfactory for furthur application of paint shall be used.

a

Upon evaporation of the cleaning agent, all S071S shall have beenremoved. Care shall be exercised to remove all cleaning agent fromcrevices and recesses.

5.7.3.14. Finish code selection. Paint finishes for application toequipmentor parts shall be in accordance with tables 11, V, VI and VII.Table II specifies basic paint finishes by F numbers. A basic paintfinish is a system involving steps 1 through 3 of table II and lacksonly the final film, step 4 of table II, for a complete finish desig-nation. Table 11 also specifies finishes by FF numbers, these are corn-plete finishing systems. Tables V, VI and VII provide the final filmcolor requirements by letter designation. Thus a semi- loss green

?system for ferrous alloys is specified as F-1OCES, F-10 ES, F-102ES, orF-103ES. In this case F-100, F-101, F-102, and F-103 are the basic greenpaint finish numbers and ES is the color designation (No. 24052conforming to FED-STD-595). Either the basic designation orthe final film designation may be specified independently. Forexample, detail drawings may specify a F-1OO paint finish, in which case,the assembly drawing would call for a final film, such as film AG., Twocoats of final paint are required for type I or 11 exposure unlessnoted in table 11.

5.7.3.15 Finish selection. Complete finishes applied to equipmentshall be one specified in table I, 11, or VIII. Insofar as possible,selection of finishes for any particular application may be made inaccordance with table IX.

5.7.4 Colors. Unless otherwise specified all colors shall be inaccordance with FED-STD-595.

23


,,

,.

,,

,’,.

,’.5,7.4.l” Color codirq.,

,.. ,.The following color coding,of ‘support, ~~,.

equipment shall be utilized. ,.’ , ;,‘, .,, ,.,

a‘. ,Red’ “,-

,’

b, Yellow -

,,

“c~ ‘Green -

Fire protection” equipment such’as fire ‘extinguishers, barricades; danger ”and ,’ .“: ,,stop,signs. : ‘“’ ‘,, ,, ... , ,.,

,,

Physical hazard ,’that might cause t[iPpin9 ~ “’ ~~stumbling, etc., obstacles, Caut’ionsigns~etc. . ,’”” , ,,

,., ,,,,, ,,,..‘Safetyandfirstaid’”e quipment,f.irst-aidboxes (agreen cross on white background) ~~ “stretchers, etc.

d. Orange - High voltage-areas, interior of switchesand fuse boxes.

e. Blue - Covered electrical outlets, fuse box exteriors :or as otherwise specified.

.f. Black, ,- Paint large stationary machinery a inedium ,white dark,gray, use black and white for direction :and : signs.

:gray ,,

9“ Yellow - Fuel cell repair equiptient. ‘. .with .,’,black ~ :sidebands

5.7.4.2 ‘Pipelinesand compressed gas cylinders. Pipelines and corn-pressed gas .cylindersshall be color coded in accordance withMIL-STD-101 (see table 11/FF-904).

5,7.4.3 Authorized colors.

5.7.4.3.1 Exterior surfaces. Unless otherwise specified by theprocuring activity, support equipment exterior surfaces shall be ,,,finished in the following colors:

FED-STD-595Color Color Number Type of Equipment

Lime Green 13670 Crash rescue and fire-fighting vehicles, in-cluding fire marshallvehicles, assigned forfire protection.

,,

,,

!,.,.

,,

0

0“24


MIL-STD-808A(USAF)

Color

Yellow

Aircraft Gray

Insignia Red

Strata Blue

Insignia White

Black (Lusterless)

Green

FED-STD-595Number

13538

16473

11136

15045

17875

37038

24052

Equipment

Cargo handling vehiclessuch as fork lifts, trucks,tugs, tractors, and trailersoperated exclusively inwarehouse docks.

Hanger equipment ,,

Safety and protective equipment ~~(attached to aircraft on ground).

Vehicles (personnel carriers,multistop vans, etc).

Garbage and refuse collectiontrucks.

Sunglare protection. Nhenspecified, hoods on vehiclesto be used in areas where snowor sand terrain is prevalentmay be pdinted with lusterlessblack.

All”mobility coded vehicularequipment. -Flight-line equipment.

5.7.4.3.2 Interior surfaces. Unless otherwise specified by theprocuring activity, support equipment interior surfaces shall befinished in the following colors:

FED-STD-595Color Number Equipment

Insignia White 17875 a. Ambulanceb. Closed type vehicles

(1) Equipment van and’trailer interiors

Gray 36440 (a) Floors

Green 34670 (b) Walls

25


,..’.’,,

,’,,

,.,.,, ,,,,,,, ,,,

,. ,,MIL-STD-808A(USAF) ~~ “, ,,

FED-STD-595 ,’

Color Number“’ 0..

Equipment ‘ ~~

White 37886 ~ . (c) Ceilings : . ,’,..’..,,

(2), ‘Storage,cabinets ‘ “’” ‘,Green ‘” 24300 (a)Exteri,or ‘ .“,,: ‘,.,

Gray 26622.. “’ (b) Interior ,,,.

,,,. ,,(3) Equipment racks : , .:

Green, : 24300 (s) Exk~ior . : ‘ :., ,,,,,

Gray ,,,

26622 (b) Interior ~

(4) ConsolesGreen 24300 (a) Exterior

Gray 26622 (b) Interior

Gray ““ 36492 (c) Console”panels :,“

Black 37038 (d) Panel letteringand marking ~~

5.8 Markin~.,.

,,,,,

:05.8.1’, Reflectorized adhesive sheeting. Unless otherwise specified, :flight l,ineequipment shall be marked with reflectorized adhesive ~~sheeting conforming. toL-S-300.

.,.5.8.2 Stencil ing.. When stenciling is required for marking of equip-ment, paint conforming to MIL-C-83286 shall be utilized as follows:

a. Luster”coded vehicular

b. Yellow

c. Insignsurfaces.

ess black, color 37038, on yellow, white, all mobilityequipment and flight line equipment.,

color 33538, on strata blue or gray.

a white, color 37875, on red, dark or olive $rab

5.9 Other finishes.

5.9.1 Electrical components. Electrical componentsotherwise governed by applicable specifications shal’

of equipment notbe treated and

painted as specified by,the contract or purchase order.

26


MIL-STD-808A(USAF)

5,9.2 Open hollow members. The interior surfaces of all hollowand tubular steel, aluminum alloy, and magnesium alloy parts ormembers having open ends shall be coated in accordance with Table II.

5.9.3 Closed hollow members. The interior surfaces of all hollowsteel, aluminum alloy, and magnesium alloy parts or members havingclosed ends shall be protected by the application of a corrosion-preventive compound (see procedure listed for each metal in Table II).However, steel parts or members that are subsequently plated shall notbe treated. (See 5.1.2.11)

5.9.4 Wood surfaces to be painted. Wood surfaces.to be paintedshall be smooth, dry, and thoroughly cleaned of all dirt, grease,and other foreign substances.

5.9.5shal1other

5.9.6

Nonmetallic surfaces. All nonmetallic surfaces to be paintedbe smooth, dry, and thoroughly cleaned of all dirt’,grease andforeign substances.

Surfaces not requirinq paint. Fabrics, plastics, rubber,working parts of machinery, and other surfaces shall not be ~aintedunless-so specified in the ’equipment specification. Such items shallbe masked or protected during treatment and painting to prevent damage.

5.10 Environmental sealing.

5.10.1 General requirements. Environmental sealing is utilized toprovide protection from corrosion by excluding moisture and othercorrodants from joints. It is important that the areas to be coatedwith sealant be adequately cleaned before sealant is applied,

5.10.2 Detail requirements. All joints and seams located in exterioror interior corrosive environments, including equipment compartments,storage compartments, engine compartments, mating surfaces joined by

spot, projection, tack, or skip welding shall be faying surfacesealed with sealant conforming to MIL-S-81733, MIL-C-83982, MIL-S-8802 or MIL-S-83430. The MIL-S-81733 specification covers a sealantwhich contains a soluble chromate content of 3 to 6 percent for cor-rosion inhibition. For sealing high temperature areas, MIL-S-38249,firewall sealant, shall be used, The use of sealants not covered bya Military Specification must be approved by the procuring activity,Removable panels and access doors shall be sealed, either by mechanicalseals or separable fay surface sealant MIL-S-8784. High adhesionsealant such as MIL-S-8802 may also be used for access door sealingproviding a suitable parting agent is used on one surface. Matingsurfaces which are joined by mechanical fasteners shall be assembled—.wet with MIL-S-81733 sealan~,

27


,,

.,

,,’

,.. ,,,~.

,.

MIL-STD-808A(USAF) ,., ,,

5,11 Fastener installation.,’,, ,,,, ,.

5.11’.1 Detail requirements. All permanently installed fasteners(all fasteners not norm lly re oved for regularacce$s or servicing)used in areasup to107 $? (225 ) shall be wet install ed.with either .a corrosion inhibiting sealant conforming’ to MIL-S-81733 or anepoxy.Primer ~onform”ng to MIL-P-23377.

+In high temperature areas, ,exceed-

ing 107 C (225 ),’MIL-P-23377 epoxy primer, or a“sealant which is‘suitable for the thermal environment shall be used; “ ~~~

,,.,

5.11.2 Removable fasteners. Quick’ release fasteners ‘and removable ‘“fasteners penetrating exterior surfaces shall be desig”ned and in-stalled so as to provide a seal to prevent moisture,or fluids fromentering. Holes for these fasteners shal~ beprimed with MIL-P-23377’epoxy primer and allowed to dry prior to installing the fastener,

5.11.3 Monel and stainless steel fasteners. Plonelfasteners orstainless steel fasteners shall be coated with cadmium or aluminumwhen used in contact with aluminum components.

6. INSPECTION

6.1 Responsibility for inspection. Unless otherwise specified inthe contractor purchase order, the supplier is responsible for the ‘perfomiance of all inspection requirements as specified herein. ExceDtas otherwise specified in the contract or order, the supplier may usehis own or any other facilities suitable for the performance of”theinspection requirements specified herein, unless disapproved by theGovernment; The Government reserves the right to perform any of theinspections set forth in the specification where such inspections aredeemed necessary to assure supplies and services conform to prescribedrequirements.

6.2 General inspection requirements. Al,lequipment being processedshall be inspected at the various stages of cleaning, surface treating,painting, electroplating, and application of other types of finishes,coatings and sealants to ascertain that each process is done in strictaccordance with this standard and individual specifications. Theinspection’s and tests covered in this section .shall not be consideredrestrictive. Any condition not in full accord with the applicable ‘drawings and specifications shall be regarded as defective.

6.2,1 Tests. Materials, prior to their use, shall be inspected,sampled and tested, in accordance with the applicable specificationand standard to determine compliance with the requirements of theparticular specification.

:,,, ,,

,.

,,

.;0,.

,

.?

28 “.


MIL-STD-808A(USAF)

a 6.2.2 Test specimens. When available, test specimens shall beactual production items, or parts of the items. When approved bythe contracting officer, coating systems may be tested on an approvednumber of test panels of the same metal and coated identically andconcurrently with the manufactured ”parts they represent.

6.3 Condition of surface prior to paintin~. All surfaces shall beexamined just prior to painting to assure that the previously cleanedand pretreated surface is dry and free from soil or contaminationof any kind. Poor adhesion of paint shall be construed as evidenceof improper cleaning. When poor adhesion is indicated, ,paint on theentire part shall be removed and the part repainted.

,.

6.4 Continuity and uniformity of coatinqs. All’coatings, inorganic, ,and organic shall be visually examined for continuity and uniformity.

6.5 Thickness of coatinqs. All coatings, inorganic and organic, shallbe checked for dry film thickness as required by this standard, theapplicable specification or drawing. The corre~t dry film thicknessof coatings is very important. Small steel panels prepared with films,too thick, too thin, and correct, may serve as visual color guides forprimers and top coats. Film thickness gages shall be used for other coatings.

6.6 Paint application. The temperature and humidity conditions shallbe checked during application of paint for conformance to this standard.(See ~.7.2.~)

6.7 Paint adhesion. The painted items, or specimen panels shall beexamined for adhesion in accordance with TT-C-490 or the coating specifi-cation, after the coated items or specimen panels have dried for aminimum of 24 hours for quick-drying systems, and for a minimum of 72hours for all other systems.

6.8 Color. The color of painted surfaces shall be checked against thestandard color chip representing the specified color in FED-STD-595 orother standard as furnished by the procuring activity. Color comparisonsshall be made using the applicable test method of FED-STD-141,

6.9 Hiding power, qloss, and smoothness of paint. The painted surfaces(when dry) shall be checked visually for hidinqness against samples (when available) furnishedprocuring activity.

power, gloss, and smooth-or approved by the

6.10 Data requirements. When this standard iswhich incorporat~a DD Form 1423, Contract Datathe data requirements identified below shall beby an approved Data Item Description (DD Form 1664) and delivered in

used in an acquisitionRequirements List (CDRL)developed as specified

29


MIL-sTp-808A(usAF) “,,

accordance wi,ththe approved CDRL incorporated into:,thecontract.~~When the provisions of DAR 7-104.9 (n) (2) are invoked’andthe DD”Form 1423 is not used, the data specified below shall be deliveredby the contractor in accordance with the contractor purchase order

,’ requirements . Deliverable, data required by this standard are,asfollows: :

,,

Paragraph no. Data requirements Applicable DID no.

(a) 5.2,, ‘. Finish Process.Specification DI-E-3130,, ,,..

(b) 5.2.2 Engineering Drawing “ DI-E-7031,’

(Copies of DID’s required in connection ‘with specific acquisitionfunctions should be obtained from the Naval Publications and FormsCenter or as directed by the contracting officer.)

..

Custodian: Preparing activity:

Air Force - 20 Air Force - 20

Review activities: (project No. MFFP-F234)Air Force - 79,99, 14

30

,.

Options

,.

Level 3

,.,“

.0,,..,,,

-,

0


MIL-STD-808A(USAF)

TABLE I. Platinq finishes (P).

Finish Type Plate Minimum Plating ApplicableNumber Expo- Description Thickness in millimeters Specifications

sure Intermediate FinalP1ates Plates .r

FOR USE ON IRON OR IRON-BASE ALLOYS

P-100 I Heavy nickel 0.025’copper 0.025 nickel QQ-N-290, Class 1,Grade C (heavybright finish)QQ-N-290, Class 1,

P-102 I Nickel 0.019 copper 0.010 nickel Grade F (brjghtfinish)

QQ-N-290, Class 1,P-103 1“ Dull nickel 0.019 copper 0.010 nickel Grade F (matte

finish)Engineering

P-104 I nickel None 0.076 nickel QQ-N-290, Class 2

0.015 nickel 0.025 QQ-N-290, Class 1,P-106 I Bright chrome over 0.017 chromium Grade E plus QQ-C-

copper 320, Type I, Class 1

n mn -+,-bDl n nqkU,ulurlkbm& t “.”-” QQ-N-29(1:Class 1$

P-107 I Satin chrome over 0.019 chromium Grade F, QQ-C-320,copper Type 11, Class 1

EngineeringP-108 I chrome None 0.050 chrome QQ-C-320, class 2

Chromate treat- 0.013 QQ-P-416, Type II,P-114 I ed cadmium None chromium Class 1

(must be paint-ed)

P-115 I Olive-drab 0.013 QQ-P-416, type 11,chromate treat- None cadmium Class ?ed cadmium

Chromate treat- QQ-Z-325, Type 11,P-115 I ed zinc (must None 0.025 zinc Class 1

be painted)

Olive-drab QQ-Z-325, Type II,P-117 I chromate treat- None 0.025 zinc Class 1

ed zinc

QQ-N-290, Class 1,P-152 II Nickel 0.019 copper 0.010 nickel Grade F (bright

finish)

31


~mber I Expo-

+

sure

-153’~1

-155 11

-161 11

TABLE 1,. “e‘Plating.finisheS (P). - Continued” ‘“ ,,’ ,., ,

, IPlate !linirnumPlating

Description Thickness in millimeters ‘Specifications ;r

Intermediate I ‘Final .,,

I PlatesI

Plates ,,. “

FOR “USE ON IRON OR lPO!’bAsE Ai-Loys,,,

QO-N-290, Class 1,

Dull nickel 0.019c00per 0.010 nickel Grade F (matte “finish)

0.010 nickel 0.025 QQ-N-290, Class 1,

Bright chrome over 0,019 chromium Grade F PIUS QQ-N-,. 302, T.Ype I or ~1)

Class i“

Chromate treat- None .“ 0.008 ~Q-D-416, Type II,

ed cadmium caclmiurn Class 2

(must be paint-ed) I I

SMALL FERROUS PARTS - BOLTS , SCREWS, NUTS, NASHERS s ETC~ ~ ‘XCEPTHIGH TENSILE BOLTS .

0.008 ; ,,QQ-P-416,Type II,

~-l70 11 $’ Cadmium None cadmium .Class 2

QQ-Z-325, Type II,

)-171 II Zinc None 0.005 zinc Class 3

9-102 I

P-103 I

IP-106 I

P-152 I 11I

FOR USE ON ALUMINUM ALL~yS .

Nickel

Dull n“

Bright

Nickel

ckel

chrome

1/See P-102 for details and Note –

1/’,See P-103 for details and Note–

1/See P-106 for details and Note –

7,

,.

See P-152 for details and Note ~{

11Prior to plating, all aluminum alloys require treatment to remove oxide films,All surfaces shall be given a suitable treatmentto insure good adhesion ofplates.

32 o


●“..

FOR

USE

ON

Ferr

ous

allo

ysot

her

than

stai

nles

sst

eel

(Tan

kcl

eani

ngan

dPr

etre

atme

ntis

prac

tica

l)

TABL

E11

.’Pa

int

fini

shes

(Fan

dFF

).

FINI

SHCO

DENU

MBER

F-1

OO

F-10

1

F-10

2

TYPE

EXPO

SURE

Ior

11

Ior

II

Ior

II

FINI

SHPR

OCES

SES

—

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.;:

Pret

reat

with

aph

osph

ate

film

per

TT-C

-490

type

I.3.

Prim

ewi

thon

eco

atof

MIL-

P-23

377

0.01

5mm

to0.

023m

m(0

.6-0

.9ro

il)dr

yfi

lmth

ickn

ess.

4.Fi

nish

-Pa

int

with

comp

atib

lefi

nal

film

from

.ta

ble

V,VI

,or

VII

ofth

isst

anda

rd.

1.

Afte

rcl

eani

ng,

cond

itio

nby

abra

sive

blas

ting

inac

cord

ance

with

comm

erci

alpr

acti

cepe

rSt

eel

Stru

ctur

ePa

inti

ngCo

unci

lVo

l.2,

Sec.

”2,

No.

6(S

SPC-

SP6-

63)

and

MIL-

STD-

1504

.2.

Pret

reat

ment

not

requ

ired

.3.

Prim

ewi

thon

eco

atof

!41L

-P-2

6915

to0.

076m

mto

0.08

9mm

(3.0

to3.

5ro

il)dr

yfi

lmth

ickn

ess.

4.Fi

nish

-Pa

int

with

comp

atib

lefi

nish

film

from

tabl

eV,

VIor

VII

Of

this

stan

dard

.— 1.

Afte

rcl

eani

ng,

cond

itio

nby

abra

sive

blas

ting

inac

cord

ance

with

comm

erci

alpr

acti

cepe

rSteel

Stru

ctur

ePa

inti

ngCo

unci

lVo

l.2,

Sec.

2,No

.6

(SSP

C.SP

6-63

)an

dYI

L-ST

D-15

04.

2.Pr

etre

atme

ntno

tre

quir

ed.

3.Pr

ime

with

one

coat

ofMI

L-P-

3833

6or

MIL-

P-23

236

type

1,cl

ass

3to

0.08

9mm

to0.

l14m

m(3

.5to

4.5

roil

)dr

yfi

lmth

ickn

ess.

4.Ch

roma

teco

nver

sion

coat

the

appl

ied

prim

erwi

thma

teri

alco

nfor

ming

toMI

L-C-

1771

1.5.

Fini

sh-

Pain

twi

thco

mpat

ible

fini

shfi

lmfr

omta

ble

V,V

Ior

VII

ofth

isst

anda

rd,

—..

..

c b-l

D -n


..’.

.“.

w -s

—.

FOR

USE

ON

All

ferr

ous

allo

ys(T

ank

clea

ning

and

pret

reat

ment

isno

tpr

acti

cal)

TABL

EII

.Pa

int’

fini

shes

(Fan

dFF

).-

Cont

inue

d“

-“,,

FINI

SHCO

DENU

MBER

F-10

3

F-10

1

F-10

4

F-10

5

TYPE

EXPO

SURE

Ior

11

Ior

11

Ior

II

Io.

rII

...-

.—

——

——

..—

-...

.--”

..._

FINI

SHPR

OCES

SES”

,.

1.””

2. 3. -—

Afte

rcl

eani

ng,

cond

itio

nph

ysic

ally

by:a

bras

ive

blas

ting

orwi

thph

osph

oric

-aci

det

chpe

rMI

L-C-

1057

8.Pr

ime

with

one

coat

ofMI

L-P-

2337

7to

0.01

5mm

to0.

022m

m(0

,6to

0.9

roil

)dr

yfi

lmth

ickn

ess.

”Fi

nicf

i-

Pain

twi

thco

mpat

ible

fin

alfi

lmfr

omta

blt

V,V

I,or

VII

ofth

isst

anda

rd..

Forf

inis

hpr

oced

ure

see

F-10

1.:

1.‘A

fter

clea

ning

,co

ndit

ion

’phy

sica

lly

byab

rasi

vebl

asti

ngin

acco

rdan

cewi

thco

mmer

cial

prac

tice

per

Stee

lSt

ruct

ure

Pain

ting

Coun

cil,

Vol.

2,Se

c.2,

No6

(SSP

C-SP

-6-6

3)an

dMI

L-sT

D-J5

04.

‘~

2.Pr

ime

with

one.

coat

ofMI

L-P-

3833

6or

MIL-

P-23

236

type

1,cl

ass

3to

0.08

9nm.

to0.

l14m

m(-

4,0,to

4.5m

ildr

yfi

lmth

ickn

ess.

.~~

..3.

Chro

mate

conv

ersi

onco

atth

ea~

plje

dpr

imer

with

mate

rial

conf

ormi

ngto

MIL”

-C-1

7711

.~

.’”

4.Fi

nish

-Pa

int

with

comp

atib

lefj

nal”

film

”fio

mta

ble

V,VI

,or

VII

ofth

isst

anda

rd.

1.Af

ter

clea

n’in

g,co

ndit

ion

phys

ical

lyby

abra

sive

~bl

asti

ngin

acco

rdan

cewi

thc.

oinm

erti

ialprac

tice

per

Stee

lSt

ruct

ure

Pain

ting

Coun

cil

Vol.

.2,.Se

c.2,

No.

10(S

SPC-

SP-6

-63)

and

MIL-

STD-

1504

.~

2.Pr

etre

atme

ntno

tre

quir

ed.

‘.”‘“

-,

3.Pr

ime

with

one

coat

ofMI

L-P-

2691

5to

0.07

6mm

to”.

0.08

%nm

(3.0

to3.

5m.i

l)dr

yfi

lmth

ickn

ess.

“‘

4.Fi

nish

-Pa

int

with

comp

atib

lefi

nish

film

from

tabl

eV,

VI.o

rV

IIof

this

stan

dard

..

.,.

,.

0“-.

0~~‘

/... ,.


MIL-STD-808A(USAF)

o———. ——.-..— —. .— ——[

,,nEaE

otu#

Lcuk-c.@

00N

-o.K

.@. .L .

aJIn

[email protected]

u6.alvxaJ%J

O-#

2uu..

“mIs*

aJI .

InaJ

.-LI&

-0cm

L&

m -waJsVI

.-

b-d

Hn

L0

uxw u

uu

uw0-

Ll!.

1%D

LL

Aln3

LAvl003.!-co

&ck+Jalwc CLLL

- 0-

.L

35


FOR

USE

ON

Exte

rior

sur

face

sof

open

and

clos

edho

llow

memb

ers

(Fer

rous

allo

ys)

Ferr

ous

allo

ysu

rfac

esco

ated

with

the

foll

owin

gme

tall

icco

atin

qs.

a. b. c. d. e. f. ,9.

h.

Elec

trop

late

dzi

ncHo

tdi

pga

lvan

ize

Mech

anic

ally

de-

posi

ted

zinc

:El

ectr

opla

ted

cadm

iur

nVa

cuum

depo

site

dca

dmi’

inMe

chan

ical

lyap

-pl

ied

cadm

ium

Vacu

umde

posi

ted

alum

inum

Ion

vapo

rde

posi

-te

dal

umin

um”

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).“

-.C!

mtin

ued

FINI

SHCO

DENW

IBER

F-1

OO

F-10

1

F-10

2

F-10

3

F-10

4

F-10

5

F-.1

08”

‘TYP

EEX

POSU

RE

Ior

11

Ior

11

Ior

II

Ior

II

Ior

II

Ior

II

Ior

II

0.

FINI

sHPR

OCES

SES

For

fini

shpr

oced

ure

see

F-1

OO

—. For

fini

shpr

oced

ure

see

F-10

1.

For

fini

shpr

oced

ure

see

F-10

2‘

For

fini

shpr

oced

ure

see

F-10

3.

,,Fo

rfi

nish

proc

edur

ese

eF-

104

—.Fo

rfi

nish

proc

edur

e”se

eF-

105

‘.

1.Af

ter

clea

ning

,co

ndit

ioni

ngno

t’rg

quir

ed.

2.Pr

etre

atwi

thch

roma

teco

nver

sion

coat

ing

“con

-fo

rmin

gto

MIL-

C-17

711

ifno

tpr

evio

usly

chro

-ma

teco

nver

sion

coat

edin

acco

rdan

ce.w

ithth

ere

spec

tive

coat

ing

spec

ific

atio

n.~

3.Pr

inie

with

one

coat

ofMI

L-P-

2337

7to

0.01

5ivn

to“

0.02

2MM

(0.6

to0.

9mil

)dr

yfi

lmth

ickn

ess.

4.Fi

nish

-Pa

int

with

comp

atib

lefi

nal

film

from

tabl

eV,

VIor

VII

ofth

is,st

anda

rd.

.,

,,,..

”

.,,

●“

..

...

,. 0“’


TABL

E11

.Pa

int

fini

shes

(Fan

dFF

).-

Cont

inue

d

.1

FOR

USE

ONFI

NISH

CODE

TYPE

FINI

SHPR

OCES

SES

NUMB

EREX

POSU

RE.—

Ferr

ous

allo

ysu

rfac

es”

F-10

9Ior

11Af

ter

clea

ning

,no

cond

itio

ning

,pr

etre

atme

nt,

coat

edwi

thor

othe

rco

atin

gre

quir

ed.

elec

trop

late

dch

romi

um

Inte

rior

surf

aces

ofF-

11O

Ior

111.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ried

.fe

rrou

sal

loy

open

2.Ch

roma

teco

nver

sion

coat

the

appl

ied

meta

l-ho

llow

memb

ers

coat

edli

cco

atin

gswi

thma

teri

alco

nfor

ming

towi

thth

efo

llow

ing

MIL-

C-17

711

ifno

tpr

evio

usly

chro

mate

non-

meta

llic

coat

ings

.ve

rsio

nco

ated

inac

cord

ance

with

the

re-

a.El

ectr

opla

ted

spec

tive

meta

llic

coat

ing

spec

ific

atio

n;zi

nc3.

Appl

yco

rros

ion

prev

enti

veco

mpou

ndco

nfor

-b,

Hot

dip

ming

togr

ade

Iof

MIL-

C-16

173

toin

teri

orga

lvan

ize

surf

aces

..

c.Me

chan

ical

lyde

-po

site

dzi

nc.

d.El

ectr

opla

ted

cadm

iur

ne.

Vacu

umde

posi

ted

cadm

ium

f.Me

chan

ical

lyap

-.1

plte

dca

dmiu

m!l

.Va

cuwn

de~o

site

dI

alum

inum

.h.

iIo

nva

por

de-

1po

site

dal

umin

umf i

Inte

rior

surf

aces

of!

F-11

1Ior

111.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.fe

rrou

sal

loy

clos

ed~

7.Ch

roma

teco

nver

sion

coat

the

appl

ied

meta

llic

holl

owme

mber

sco

ated

‘co

atin

qswi

thma

teri

alco

nfor

ming

toMI

L-C-

with

the

foll

owin

g17

711

ifno

tpr

evio

usly

chro

mate

conv

ersi

onme

tall

icco

atin

gs:

coat

edin

acco

rdan

cewi

thth

ere

spec

tive

me-

a.El

ectr

opla

ted

zinc

.ta

llic

coat

ings

spec

ific

atio

n.b.

Hot

dip

galv

aniz

e

k 4 w & o m > - c m D -1


w w

-——

~—

—.-

.

FOR

USE

ON

-

Inte

rior

surf

aces

of,f

erro

usal

loy

(Con

t.)

c.Me

chan

ical

lyde

-po

site

dzi

ncd.

Elec

trop

late

dca

dmiur

ne.

Vacu

umde

posi

ted

cadm

iur

nf.

Mech

anic

ally

ap-

plie

dca

dmiu

m

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).-

Cont

inue

d

!J.

Vacu

umde

pos

alum

inum

h.Io

nva

por

de.

posi

ted

alum

ted

num

—

Exte

rior

surf

aces

offe

rrou

sal

loy

open

and

clos

edho

llow

memb

ers

coat

edwi

thth

efo

llow

inme

tall

icco

atin

gs:

a.El

ectr

opla

ted

zinc

b.Ho

tdi

pga

lvan

ize

c.Me

chan

ical

lyde

po-

site

dzi

nc

FINI

SHCO

DENU

MBER

F-il

l

....

...

F-1.

12

TYPE

EXPO

SURE

—.

.—

1or

II

-—--

1or

11”

—

.-..

——

....—

.——

.

FINI

SHPR

OCES

SES

““-

3.Af

ter

clos

ure,

exce

ptth

ose

holl

ow’~e

mber

sth

attr

ansp

ort

gass

esor

flui

ds,

appl

yMI

L-C-

1179

6,cl

ass’

1or

MIL-

C-16

1.73

,gr

ade

1co

rros

ion

prev

enti

veco

mpou

ndto

inte

rior

.su

rfac

es.

Appl

icat

ion

ofth

eco

mpou

ndto

the

inte

rior

surf

aces

ofve

rtic

alan

dho

ri-

-zo

ntal

clos

edho

llow

memb

ers,

exce

ptth

ose

holl

owme

mber

swh

ich

tran

spor

tga

sses

or,

flui

ds,

may

bedo

neth

roug

hpe

rman

ent

drai

nho

les

orho

les

that

have

been

dril

led

spec

ifi-

call

yfo

rap

plic

atio

n.o

fth

eco

rros

ion

pre-

.:vg

ntiv

eco

mpou

nd.

The

hole

ssh

all

besp

aced

~to

perm

itco

mple

teco

vera

ge-o

fth

eir

iter

nal

surf

aces

and

cons

eque

ntdr

aina

geof

.the

exce

ssco

atin

gma

teri

al.

All

hole

sth

atwe

redr

ille

d~~ex

pres

sly

for

appl

icat

ion

”oft

heco

rros

ion.

“.,

prev

enti

veco

mpou

ndsh

all

be,’

clos

,edwit

hse

lf-

tapp

ing

stee

lsc

rews

..So

lder

shal

lno

t,be

used

tocl

ose

thes

eho

les.

C)Fa

inho

les

inve

rtic

alho

llow

memb

ers

shal

l,b

ecl

osed

,wit

hre

mova

ble

well

hut

plug

sor

othe

req

uiva

lent

devi

ces.

Al1“’

di-a

inho

les

inho

rizo

n.ta

l..h.ol

lowme

inbe

rssh

all

bele

ftop

en’.

..—

.—,.

.

Forfi

nish

proc

edur

ese

eF-

108.

.”.

—.—

.—

.-—

.—-.

..

o,m

..


●

FOR

USE

ON

Exte

rior

surf

aces

offe

rrou

sal

lov

(Cont.)

d. e. f. 9. h.

Elec

tro~

late

dCa

dmiur

nVa

cuum

depo

site

dca

dmiu

mMe

chan

ical

lyap

-pl

ied

cadm

ium

Vacu

umde

posi

ted

alum

inum

Ion

vapo

rde

-po

site

dal

umin

um

Aust

enit

ic30

0se

ries

corr

osio

nre

sist

ant

stai

nles

sst

eels

Mart

ensi

tic

400

seri

esco

rros

ion

re-

sist

ant

stai

nles

sst

eels

used

inap

pli-

cati

ons

wher

ete

mper

-at

ures

dono

tex

ceed

649°

C(12

000F

)(s

uch

asex

haus

tsy

stem

sfo

rga

soli

nean

ddi

esel

engi

nes

used

for

supp

ort

equi

pmen

t)

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).-

Cont

inue

d

FIN

ISH

CODE

NUMB

ER

F-11

2

F-20

0

F-20

1

TYPE

EXPO

SURE

Ior

11

Ian

d11

Ior

11

FIN

ISH

PROC

ESSE

S

I $—Fo

rfi

nish

proc

edur

ese

eF-

108.

I

— 1.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.2.

Pass

ivat

ewi

thty

pes

1,II

,11

1or

IVpa

ssiv

atio

ntr

eatm

ents

ofQQ

-P-3

5.3.

Nofi

nish

requ

ired

..

——

1.Af

ter

clea

ning

,co

ndit

ioni

ngno

tre

quir

ed.

2.,P

assi

vate

with

appr

opri

ate

pass

ivat

ion

trea

tmen

tof

QQ-P

-35.

3.No

fini

shre

quir

ed.


—.

..

FOR

USE

ON

TABL

EII

.Pa

int

fini

shei

(Fan

dFF

).-

Cont

inue

d“

——

Mart

ensi

tic

400

seri

esco

rros

ion

resi

stan

tst

ainl

ess

stee

lsus

edin

appl

icat

ions

wher

ete

mp-

erat

ures

dono

tex

ceed

649°

C(lZ

000F

)(A

ppli

-ca

tion

sot

her

than

exha

ust

syst

ems)

Mart

ensi

tic

400

seri

esco

rros

ion

resi

stan

tst

ainl

ess

stee

lsus

edin

appl

icat

ions

wher

ete

mp-

erat

ures

dono

tex

ceed

371°

C(7

00°F

)

Mart

ensi

tic

400

seri

esco

rros

ion

resi

stan

tst

ain-

less

stee

lsus

edin

ap-

plic

atio

nswh

ere

temp

er-

atur

esdo

not

exce

ed15

9°C

(300

°F)

—

.—.-

—-

——

.—--

—-

IT..-——-.—.——

-——

-.-—--

————-.-

FINI

SHCO

DETY

PEFI

NISH

PROC

ESSE

S

NUMB

EREX

POSU

REI

1,

,

F-20

2lI

orII

.I

1.Af

ter

clea

ning

,co

ndit

ion

byab

rasi

vebl

asti

ng

F-2(

I3

F-20

4

~———

inac

cord

ance

-wit

hSt

eel

Stru

ctur

esPa

inti

ngCo

unci

l,Vo

l.2,

Sec.

2,!i

o.””

6(S

SPC-

SP6-

63).

2.Pa

ssiv

ate”

with

appr

opri

ate

pass

ivat

ion

trea

t-me

ntof

QQ-P

-35.

~:“

Fina

lfi

nish

with

alum

inum

coat

ing

conf

ormi

ngto

eith

er’MI

L-C-

2321

7,MI

L-C-

8174

0,MI

L-C-

8175

1i

orMI

L-C-

83W1

8..—

.———

+—–—

–.——

--

Ior

II!l

.i4

fter

clea

ning

,co

ndit

ionb

yab

rasi

vebl

asti

ngi :.

inac

cord

ance

with

Stee

lSt

ruct

ures

Pain

ting

I !.Co

unci

l.VO

1.2.

Sec.

2.No

.6

(SSP

C-SP

6-53

).:2.

.,Pa

s5iv

ate

with

-app

ropr

iate

pass

ivat

ion

trea

t-

1or

II

ment

ofQQ

-P-3

5.3:

Fina

lfi

nish

with

0.08

9MM

to0.

114m

m’(

3.5’

to4.

!ro

il)dr

yfi

lmth

ickn

ess

ofin

orga

nic

zinc

rich

prim

erco

nfor

ming

toMI

L-C-

3833

6or

”MIL

-P-”

2323

6ty

pe1,

clas

s3.

--

l;Af

ter

clea

ning

,co

ndit

ioni

ngno

tre

quir

ed.

2.Pa

ssiv

ate

with

appr

opri

ate

pass

jva’

tion

trea

t-me

ntof

QQ-P

-35.

,.

3..

Prim

ewi

th0.

015m

mto

0.02

3M(0

.6.to

0.9m

il)

~dr

yfi

lmth

ickn

ess

ofep

oxy

prim

er”c

onfo

rmin

gto

MIL-

P-23

377,

type

I.4.

’Fi

nish

-Co

atwi

thco

mpat

ible

fini

shma

teri

alfr

omta

ble

V,V

Ior

VII

ofth

isst

anda

rd.

—...’

●●

✎.

..0

:.””

”


*

FOR

USE

ON

,Hig

hst

reng

thst

eels

with

aha

rdne

ssle

vel

ofRo

ckwe

llC4

0an

dhi

gher

1230

MPA

(180

,000

KS

I)ul

tima

tete

nsil

est

reng

th

High

stre

ngth

stee

lswi

tha

hard

ness

leve

lof

Rock

well

C40

and

high

er12

30MP

A(1

80,0

00KS

I)ul

tima

tete

nsil

est

reng

th

Alum

inum

allo

ys.

(All

bare

orcl

adal

umin

umal

loy

surf

aces

used

inst

ruct

ural

load

bear

ing

appl

icat

ions

and

all

2000

and

7000

seri

esal

umin

umal

loys

used

for

stru

ctur

-al

load

bear

ing

orno

nlo

adbe

arin

gap

plic

atio

ns)

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).-

Cont

inue

d

FINI

SHCO

DE~l

JMBE

R

F-30

0

FF-3

01

F-40

0

TYPE

EXPO

SURE

Ior

11

Ior

II

Ior

II

FINI

SHPR

OCES

SES

1.Af

ter

clea

ning

,co

ndit

ioni

ngno

tre

quir

ed.

2.Ca

dmiu

mpl

ate

inac

cord

ance

with

QQ-P

-416

,ty

peII

,cl

ass

2or

cadm

ium

coat

inac

cord

ance

with

eith

erMI

L-C-

8837

orNI

L-C-

8156

2..A

lumi

numco

atin

gsin

acco

rdan

cewi

thei

ther

NIL-

C-23

217

orYI

L-C-

8348

8ar

eac

cept

able

subs

ti-

tute

sfo

rca

dmiu

m.3.

Prim

ewi

th0.

015m

mto

0.02

3mm

(0.6

to0,

9mil

)dr

yfi

lmth

ickn

ess

ofep

oxy

prim

erco

nfor

ming

toMI

L-P-

2337

7,ty

peI.

4.Fi

nish

-Co

atwi

thco

mpat

ible

fini

shma

teri

alfr

omta

ble

V,VI

.or

VII

ofth

isst

anda

rd.

1.Af

ter

clea

ning

,co

ndit

ioni

ngno

tre

quir

ed.

2.Ch

romi

umpl

ate

inac

cord

ance

,wi

thQQ

-C-3

20cl

ass

2.

1.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.2.

Pret

reat

with

anan

odic

coat

ing

conf

ormi

ngto

type

IIof

MIL-

A-86

25.

3.Pr

ime

with

0.01

5to

0.02

3mm

(0.6

to0.

9mil

)dr

yfi

lmth

ickn

ess

ofep

oxy

prim

erco

nfor

ming

toMI

L-P-

2337

7,ty

pe1.

4.Fi

nish

-Co

atwi

thco

mpat

ible

fini

shma

teri

alfr

ota

ble

V,V

Ior

VII

ofth

isst

anda

rd.


TABL

EII

.Pa

int

fini

shes

{Fan

dFF

).-

Cont

inue

d

FOR

USE

ON

~are

”or

clad

~o

oo

ml,

Alum

lnum

allo

ys

6000

seri

esal

umin

um”

allo

ysus

edfo

rno

n-st

ruct

ural

,no

nloa

dbe

arin

gap

plic

atio

ns)

Inte

rior

surf

aces

ofop

enan

dcl

osed

holl

owme

mber

s(A

llba

rean

dcl

ad20

00,

5000

,60

00,

and

7000

seri

esal

umi-

num

allo

ys)

FIN

ISH

CODE

NUMB

ER

F-40

1

F-40

2

TYPE

EXPO

SURE

—FI

NISH

PR~S

tS

1.,A

fter

clea

ning

,co

ndit

ion

with

deox

idiz

erco

n-fo

rmin

g’t

oMI

L-C-

3833

4.2.

Pret

reat

with

chem

ical

conv

ersi

onco

atin

gco

n-fo

rmin

gto

clas

sla

ofMI

L-C-

8170

6ap

plie

din

.’ac

cord

ance

with

MIL-

C-55

41.

3.Pr

ime

with

0.01

5to

0.02

3mm

.(0.

6to

0.9m

il)

dry

film

thic

knes

sof

epox

ypr

imer

conf

ormi

ngto

MIL-

P-23

377,

”typ

eI.

4.Fi

nish

’-Co

atwi

thco

mpat

i”bl

efi

nish

mate

rial

“fro

mta

ble

V,V

I,or

VII

“ofth

isst

anda

rd.

.-

1.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.2.

Holl

owme

mber

spr

evio

usly

pret

reat

edin

acco

r-~

danc

ewi

thfi

nish

code

sF-

400

and

F-40

1do

not

requ

ire

furt

her

pret

reat

”men

t.Ot

her

proc

edur

esre

quir

eap

prov

alof

the

proc

urin

gac

tivi

ty.

.3.

Afte

rcl

osur

e,ex

cept

thos

eho

llow

memb

ers

that

tran

spor

tga

sses

orfl

uids

,ap

ply

MIL-

C-16

173,

grad

eIco

rros

ion

prev

enti

veco

mpou

ndto

inte

rior

surf

aces

.Ap

plic

atio

nof

the

comp

ound

toth

ein

teri

orsu

rfac

esof

vert

ical

and

hori

zont

alcl

osed

holl

owme

mber

s,ex

cept

thos

eho

llow

memb

ers.

whic

htr

ansp

ort

gass

esor

flui

ds,

may

bedo

ne,,

thro

ugh

perm

anen

tdr

ain

hole

sor

hole

sth

atha

ve,be

endr

ille

dsp

ecif

ical

ly”f

orap

plic

atio

nof

the

corr

osio

n.pr

even

tive

comp

ound

.Th

eho

le’s

shal

lbe

spac

edto

perm

itco

mple

teco

vera

geof

the”

inte

rnal

surf

aces

and

cons

eque

ntdr

aina

geof

the

exce

ssco

atin

g,ma

teri

al.

All“h

oles

that

.we

redr

ille

dex

pres

sly

for

appl

icat

ion

ofth

eco

rros

ion

prev

enti

veco

mpou

ndsh

all

‘be,

clos

edwi

thse

lfta

ppin

gal

umin

umsc

rews

..S

olde

rsh

all

not

beus

edto

clos

eth

ese

hole

s.Dr

ain

hole

s.in

vert

ical

holl

owme

mber

ssh

all

b~cl

osed

-wit

hre

mova

ble

.,we

llnu

tpl

ugs

orot

her

equi

vale

ntde

vice

s.-

All

drai

nho

les

inho

rizo

ntal

holl

ow’”

rnem

bers.sh

all.

bele

ftop

en— ,0.

,.


●

TABL

EII

.Pa

irit

fini

shes

(Fan

dFF

)Z-

Cont

inue

d

@

FOR

USE

ONFI

NISH

CODE

TYPE

FINI

SHPR

OCES

SES

NUMF

JER

EXDf

)Sll

RE

Exte

rior

surf

aces

ofop

enF-

400

Ior

IIF

orfi

nish

proc

edur

ese

eF-

400

and

clos

edho

llow

memb

ers

(All

bare

and

clad

2000

,F-

401

Ior

11Fo

rfi

nish

proc

edur

ese

eF-

401

5000

,60

00an

d70

00se

ries

alum

inum

allo

ys)

Magn

esiu

mal

loys

F-50

0Ior

II1.

Cle

anwi

thal

kali

necl

eane

rco

nfor

ming

to~I

L-C-

2576

9or

inac

cord

ance

with

MIL-

M-31

71to

re-

move

all

soil

s.2.

Pret

reat

with

bich

roma

teco

nver

sion

coat

ing

con-

form

ing

toty

pe11

1of

MIL-

M-31

71.

3.Pr

ime

with

0.02

5to

0.03

8mm

(1.0

to1.

5mil

)dr

yfi

lmth

ickn

ess

ofep

oxy

prim

erco

nfor

ming

toMI

L-P-

2337

7,ty

peI.

4,Fi

nish

-Co

atwi

thco

mpat

ible

’fin

ishma

teri

al.,

from

tabl

eV,

VIor

VII

ofth

isst

anda

rd.

Magn

esiu

mal

loys

F-50

1Ior

II1.

Cle

anw

ithal

kalin

ecl

eane

rco

nfor

ming

toMI

L-C-

2576

9or

inac

cord

ance

with

MIL-

M-45

202

tore

-mo

veal

lso

ils.

2,Pr

etre

atwi

than

odic

coat

ing

conf

ormi

ngto

type

II,

Clas

sA,

grad

e3or

clas

sII

ofMI

L-M-

4520

2.3,

Prim

ewi

th0.

025

to0.

03%m

(1.0

to1.

5mil

)dr

yfi

lmth

ickn

ess

ofe~

oxyp

rime

rco

nfor

ming

toAI

L-P-

2337

7,ty

peI.

4,,

Fini

sh-

Coat

with

comp

atib

lefi

nish

mate

rial

from

tabl

eV,

VIor

VII

ofth

isst

anda

rd.

Inte

rior

surf

aces

ofop

enF-

502

Ior

II1.

Afte

rcl

eani

ng,

cond

itio

ning

not

requ

ired

.an

dcl

osed

.ho

llow

2.Ho

llow

memb

ers

prev

ious

lypr

etre

ated

inac

cor-

memb

ers

(All

magn

esiu

mda

nce

with

fini

shco

des

F-50

0or

F-5o

2do

not

allo

ys)

requ

ire

furt

her

pret

reat

ment

.Ot

her

proc

edur

esre

quir

eap

prov

alof

the

proc

urin

gac

tivi

ty.

A


.!

R.

I

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).Co

ntin

ued

——

FOR

USE

ON

Inte

rior

surf

aces

ofop

enan

dcl

osed

holl

owme

mber

s(A

llma

gnes

ium

allo

ys)

cont

inue

d.

Exte

rior

surf

aces

ofop

enan

dcl

osed

holl

owme

mber

s(A

llma

gnes

ium

allo

ys)

Wood

surf

aces

o

FINI

SHCO

DENU

MBER

F-50

2

..

F-50

0

F-50

1

F-60

0

TYPE

EXPO

SURE

Ior

II

Ior

II

Ior

II

IorI

I

._._

..—

____

___

...—

—

FINI

SHPR

OCES

SES

—.—

—.

“3.

.,

Afte

rcl

osur

e,ex

cept

.th

ose

holl

owme

mber

that

tran

spor

tga

sses

orfl

uids

,ap

ply

MIL-

C-11

796,

grad

eII

Ior

MIL

-C-1

6173

,gr

ade

2co

rros

ion

‘“pr

even

tive

comp

ound

.to”

inte

rioi

svrf

aces

.Ap

plic

atio

nof

the

comp

ound

toth

ein

teri

orsu

rfac

esof

vert

ical

and

hori

zont

al‘c

lose

dho

llow

memb

ers,

exce

ptth

ose

holl

owme

mber

s’wh

ich

tran

spor

tga

sses

orfl

uids

,ma

ybe

”do

neth

roug

hpe

rman

ent-

drai

nho

leso

rho

les

that

have

been

’dri

lled

spec

i.fi

c’al

lyfo

rap

plic

atio

n.of

the

corr

osio

npr

even

,~iv

eco

mpou

nd.,

The’

hole

s”sh

all

besp

aced

tope

rmit

‘com

plet

eco

vera

geof

the

inte

rnal

surf

aces

and.

cons

eque

ntdr

aina

geof

the

exce

ssco

atin

gma

teri

al.

All

hole

s’th

atwe

redr

ille

dex

Dres

slv.

four

aDDl

icat

ion”

ofth

eco

rros

ion

prev

enti

ve~o

mpou

nd’.

shal

lbe

clos

ed~

with

self

-tap

ping

magn

esiu

msc

rews

..So

lder

ish

all

not

beus

edto

clos

eth

ese

hole

s.Dr

ain

hole

sin

vert

ical

holl

owme

mber

ssh

all

be~. I

clos

edwi

thre

.mov

able

’wel

lnu

tpl

ugs

orot

her

ieq

uiva

lent

devi

ces.

All

drai

nho

les

inho

rizo

n-/

tal

holl

owme

mber

ssh

all

bele

ft.op

en.

~.-,

For

fini

shpr

oced

ure

see”

F-50

0...

~—.

For

fini

shpr

oced

ure

see

F-50

?,.

——..:-—.-

..—.

.—

1..T

horo

ughl

”ysa

ndsu

rfac

esin

acco

rdan

ce‘w

ithbe

stco

mmer

cial

prac

tice

..’

2.Af

ter

any

nece

ssar

y.bo

ndir

igor

mask

ing

ofar

eas

tobe

bond

ed,

seal

with

cle?

rMI

L-W-

1351

8wi

than

extr

aco

atap

plie

d’to

.en

dgr

ains

.3.

Fini

sh-

Pain

twi

thco

mpat

ible

fi”n

al’fil

mfr

omta

ble

V,VI

orVI

Iof

this

’st

anda

rd.

.,—-

—-.....~.—

..-—.

.._—

,“.0

,~~


J=

●o

TABL

EII

.Pa

int

fini

shes

(Fan

dFF

).-

Cont

inue

d

FOR

USE

ONFI

NISH

CODE

TYPE

FINI

SHPR

OCES

SES

NUMB

EREX

POSU

RE

Wood

surf

aces

F-60

11or

111.

Cond

itio

nby

thor

ough

sand

ing

inac

cord

ance

with

the

best

comm

erci

alpr

acti

ce.

2.Ap

ply

not

less

than

thre

eco

ats

ofTT

-V-1

21va

rnis

h.

Engi

nes,

auto

moti

ve,

FF-7

00?or

11J.

Clea

ning

}Pa

cket

te,

etce

tera

2.Pr

etre

atme

nt}

inac

cord

ance

with

best

3.Pr

imin

g]co

mmer

cial

prac

tice

,ex

cept

all

unit

s4.

Fini

sh)ex

pose

dto

view

shal

lbe

pain

ted

colo

rnu

mber

2405

2of

FED-

STII

-595

Cran

kcas

ese

aler

FF-7

01II

1.Af

ter

clea

ning

,co

ndit

ioni

ngis

not

requ

ired

.(C

ast

iron

hous

ings

of2.

Pret

reat

ment

isno

tre

quir

ed.

clut

ch,

tran

smis

sion

,3.

Prim

er-

Pain

tin

teri

orsu

rfac

e,th

isdo

esno

t

diff

eren

tal,

fina

ldr

ive

appl

yto

meta

l-to

-met

alor

meta

l-to

-met

alli

ning

and

brak

e)su

rfac

es,

with

one

coat

ofTT

-P-6

36to

0.02

5to

0.03

8mm

(1.0

to1.

5mil

)dr

yfi

lmth

ickn

ess.

Aco

mmer

cial

cran

kcas

ese

aler

may

beus

edin

lieu

ofth

eab

ove

mate

rial

s.4.

...Fini

sh-

Not

requ

ired

.

Gene

rati

ngpl

ant

comp

onen

tsFF

-702

Ior

111.

,Cl

eani

ngpr

oced

ure

will

bede

pend

ent

onst

eel

allo

ysu

bjec

tto

elev

ated

temp

er-

2.Pr

etre

atme

ntwi

llbe

depe

nden

ton

stee

lal

loy.

atur

esof

205°

Cto

530°

C;

3.Pr

ime

with

one

coat

ofMI

L-P-

3833

6or

MIL-

P-23

236,

[400

0Fto

1000

°F)

(Oth

erty

pe1,

clas

s3

to0.

089

to0.

l14m

m(3

.5to

4.5m

il)

than

stai

nles

sst

eel

exha

ust

dry

film

thic

knes

s.sy

stem

s)4.

Topc

oat

with

ahi

ghte

mper

atur

ere

sist

ant

sili

cone

/..

zinc

pain

tas

appr

oved

byth

epr

ocur

ing

acti

vity

.

Pipe

line

san

dco

mpre

ssed

FF-7

03Ior

111.

Clea

ning

,co

ndit

ioni

ng,

pret

rea”

tmen

tan

dPa

inti

ndga

scy

lind

ers

shal

lbe

asap

prov

edby

the

proc

urin

qac

tivi

ty.

2.Ma

rkin

qan

dco

lor

codi

nqsh

all

bein

acco

rdan

cewi

thMI

L-ST

D-1O

I.


,’

Mate

rial

Ferr

ous

Allo

y

Ferr

ous

Allo

ys

Ferr

ous

Allo

ys

Alum

inum

Alfl

oys

Alum

inum

Al10

yS

TABL

E11

1.El

ectr

ical

cond

ucti

vity

ofpa

ssiv

ated

fini

shes

.

Type

,Exp

osur

e

I II 1’ 11 I 11 11 II

Fini

shNu

mber

P-11

5

P-16

2

P-11

7

P-16

3

D-10

1

D-10

2

D-35

0

D-35

1

.—.

.

Fini

shDe

scri

ptio

n

.-—

——

.

Chro

mate

-tre

ated

cadm

ium

—

Phos

phat

e-tr

eat-

edzi

nc

—

Phos

phat

e-tr

eat-

ment

,,.

Anod

ized

“

..

Chem

ical

film

Cond

ucti

ngPo

wer

Freq

uenc

y

No No

——No No No

Cond

ucti

ngRF

Freq

uenc

y

Yes

Yes

No No

—-—.

. Yes

Rema

rks

-Ele

ctri

cal

cont

act

may

requ

ire

use

ofto

othe

dty

pelo

ckwa

sher

s.~/

kibc

tric

alco

ntac

tma

yre

quir

eus

eof

toot

hed

type

lock

wash

ers.

~/~.

—-.

.—--.—--:.—.

...—-.

—-Th

ese

fini

shes

are

poro

us,

thei

rus

ein

cont

act

with

othe

rme

tals

must

bere

stri

cted

toth

ose

form

ing

coup

les

comp

atib

lewi

thfe

rrou

sal

loys

(exc

ept

stai

nles

sst

eel)

.——

——..

——.—

.May

beus

edin

cont

act

with

any

“dis

simi

lar

“.me

tals

...

....

Elec

tric

alco

ntac

tma

y-re

quir

eus

eof

toot

hed

type

lock

wash

ers.

:—-

.—--

.-—-

-—--

-

1/Ch

roma

tefi

lms.

deRe

ndin

aon

thic

knes

s,ha

vea

rela

tive

lylo

wel

ectr

ical

“ies

fsta

nce

from

_,0.

0001

to0.

002

ohms

eve;

aco

ntac

tar

eaof

Isq

uare

inch

with

cont

act

pres

sure

of”1

00”P

SI.

,

0~~

o


MIL-STD-808A(USAF)

TABLE IV. Metallic coatings other than electroplated coatings (M).

f f&

Finish Type Metallic Coating Minimum Coating ApplicableNumber Exposure Description Thickness in Specification ,,

Millimeters“

M-100 I or 11 Vacuum deposited 0.008 MIL-C-8837, Type II,cadmiurn Class 2

I!%101 I or 11 Mechanically 0.008 MI.L-C-81562, Type 11,

deposited cadmium class 2

M-102. I or II Vacuum deposited 0.025 MIL-C-23217, Class 1aluminum

M-103 I or II Ion vapor depo- 0.025 MIL-C-83488, Type II,sited aluminum Class 1

M-104 I or 11 Mechanically 0.025 !41L-C-81562, Type II,depos~ted zinc Class 1

● ‘!4-105 I Oi’ 11 U-+ Ain 7fnp-I,ut. USy ..o..- 0.036 ASTM A525, Regularcoating (galvaniz- (To:o~)both Type, Designation GXied) (See 5.5.1.4)

M-106 1 or 11 Hot-dip zinc- 0.084 ASTM A123coating (galvaniz-ed) (See 5.5.1.4)

L t ~

47


,,,., .

@

,-

●✌

0

MIL-5TD-808A(USAF) “.’,’

,.’

.’ ,,,’

,,,,%Nm ,,m

,, CL,. L ,,‘s

al

o

aJ

nfoLt.)g,--“ w-nLncL<

— — — — —— — —

N0FIn

h.w0e’

*u0In

1-CnFml.

m3.0

— — —— — — —

.> a

E2

L0

‘G,V

i

— — —— — — —

c0

g

—— — —

48


●

Film

Desi

g-na

tion

AS 0s Cs 0S ES

TABL

EV

I.Fi

nal

pain

tfi

lm-

semi

-gl~

.

Colo

rNa

me

—

Sea

Blue

Inst

rume

ntBl

ack

Green

Gray

Gree

n

FED-

STD-

595

Colo

rNo

.

2504

2

2703

8

2430

0—

2562

2

2405

2

Appl

icab

lePr

imer

s

MIL-

P-23

236

MIL-

P-23

377

MIL-

P-26

915

MIL-

P-38

336

Appl

icab

lePa

int

Spec

ific

atio

n

MIL-

C-83

286

—

r J/-1

G’

&


.,

MIL-STD”-808A(USAF),,.

a.’.

m1%

zm

—

co&

— — —

uLD

Loe-lI-’4

i-+.uu>

— . — — — — — — —

w

L0

“ov

vc

: 0

— — — — — — — —

i

-1r

—

-1m

-10

—— — — — — —


MIL-STD-808A(USAF)

cov

I

E

IEn

-mc

.u

H

>

w

al

al

)L

)1.co.ml-o

:U!ozI c

Lo

—

YLJm

n

—

—.

—

-1x

—

./’

51


,,

,’

., MIL-STD-808A(!JSAF) .: ‘“

,TABLE VI II., Finishes or process ottierthan .painting or plating (D), ‘

For Use On,,

Plated ferrous,alloys.(other than stain-~ess steels) having”aRockwell hardness.gFeater”than C-40 “

Ferrous alloys otherthan stainless steel(wearing parts lubri-cated in service)

Ferrous alloys otherthan stainless steel(non-wearing. partsnot lubricated inservice)

rnacninea or weldedstainless steel,parts

Corrosion-resistantsteels (dull finish)

Aluminum alloys.(see 5.4.1)”

Aluminum alloys(see 5.4.1)

“aType : Finish ProcessFinish ., :,,

Exposure Number ‘.

I or 11 D-1OO 1.’

,2.

,., 3.

Preclean in accordance with5.3.1. “Clean andcondition by abra,-sive blasting. (See.5.3 .2.3)Apply applicable metalliccoatinq in accordance withTable ~ or Table IV. ““--

.11

i or 11

II

I or II(see’~/)

II

D-101 1‘. After cleaning, conditioningnot required.

2. Pretreat with phosphate filmper MIL-P-16232,, type M;class 2.

iD-102 1. After cleaning, conditioning

not required.2. Pretreat with, phosphate film

per NIL-P-16232, type Z,class 2.

D-20U i. After cleaiiing, ccnditiofiifignot required.

2. Passivate with applicablepass.ivation treatment in ac-cordance with QQ-P-35.

3. All ferritic and martensiticsteels shall be chromatetreated after passivationin accordance with QQ-P-35.

I-I-219 1. Cleaning and conditioning(see 5.3.2.4)

2. Pretreatment with black oxidper MIL-C-13924, class 4.

D-350 ‘1. Conditioning not required.2. ‘Pretreat w~th anodic film

per ?IIL-A-8625, type II.

D-351. 1. Conditioning not required.2. Pretreat with chemical film

per MIL-C-81706, clais 1A.

,,.

,.

,,

a

1 I I

52


oMIL-STD-!308A(USAF)

TABLE VIII. Finishes or process other thanpainting or plating (D). - Continued

For Use on Type Finish Finish ProcessExposure Number

Aluminum alloys. I or 11(See 5.4.1.1)

D-352 1. Conditioning, not requi~ed.

-2, Pretreat with chemical filmper MIL-C-81706, class 3.

Aluminum alloys 1 or 11 “D-353 1. Conditioning not required.2. Pretreat with anodic film

per MIL-A-8625, type 111.

~/ Anodic films are satisfactory for type I or II surfaces only on smallunthreaded parts.

53


,,,,, MIL-”STD-808A(USAF) ‘, ‘ “,. ,“.,, ,,,

TABLE IX. Finish selections. “,,./ ..

,“.

rype.Class of Part” Conditions $ffecting Expo- , Applicable ‘Fi,nish.

‘Finish Selection sure “ “’,, ,,

FABRICATED FROY FERROUS ALLOYS OTHER THM iTAIt4LEis STEEL

Massivestructural Tank cleaning andpre- “I F-1OO; F-103, or F-102p~rtsand ass~bl.ies, treatment i“s,practical.

: ,. ,,,.suchas the bodies of ,’

trucks, ‘trailers, ,,,.

semi-trailers, atid, ~ ,. ,,,. .,,’vans,special, purpose

,,,’,,vehicles of all types,large brackets,, gus-.sets, and assembly ,,hardware.

La’rgebolts, nuts, Parts will require I P-114, P-115, ”P-116,washers, and similar painting after assembly. P-117, M-1OO, M-102type hardware for or M-103assembly of massive

,.

structures. ,

Lesser structural Tank pretreatment is .1 ‘F-101, F-103, F-102” ~parts and assemblies practical .such,as racks, cases, ,.

castings, ‘hous~ngs, Tank pretreatment is not I F-101, F-103, F-104panels, brackets, practical. C)rF-105etc.

Inside of open and “I F-106, F-107closed hollow’members.

Small hardware Parts will be exposed .1 F-1OO, F-101, F-102,(except threaded to environment when F-103, F-104, F-105,parts) such as assembled in equipment. P-114, P-118, P-170,hinges, fasteners, P-171, M-105, orcatches handles, M-106truck corners, Parts will not be expos- 1washers, special-

F-1OO, F-101’,F-102

ty parts, etc.ed to environment when F-103, F-104, or any

(See 5.1 .2.6.)assembled in equipment. plate of metallic coat-

ing for type I expo-sure per table I ortableIV.

Parts will be painted 1 P-114, P-115, P-116,after assembly. P-117, $I-1OO,M-101 ,

M-102, M-103, !4-105orhl-106

Parts will be exposed ‘1 P-102 or P-107to the environmentwhen assembled andcannot be painted.

54


MIL-STD-808A(USAF}

TABLE IX. Finish selections (cont.).

Class of Part

Small hardware(continued)

Screws, bolts, nutsand threaded parts

Any type of part(except threadedparts )

Wearing parts lubri-cated in service

Conditions AffectingFinish Selection

TypeExposure

Parts were platedby manufacturerwith any plate,except cadmium orzinc, and requirespainting afterassembly,Parts were plated bymanufacturer withcadmium or zinc andrequires paintingafter assembly.

I

7-

Parts will not beexposed to environ-ment after assemblyin equipment.

Ior11

Parts will bepainted afterassembly.

!fter assembly in Iequipment (except orparts which cannot 11be painted, )

Parts will be sub- 1jetted to tempera- ortures in excess of

III

!50°F.

Applicable Finish’ “

F-108

~-170, P-171, M-1OO4-102, or M-103

)-162, P-170, M-1OO,!-102, or M-103

‘-100, F-101, F-102,)r F-108.

\ny plate or metallic:oating for type 1 expo-,ure from table I or IVycept cadmium or zinc. .

~arts will not be ; II Any plate or mecailicsubjecte+ to temper- ~

Ico~ting for type 11 ex-

atures in excess of \ posure from table I or I450°F, IIV.

1 IParts will be in con-tact with uncuredphenolics or subject-ed to Rhenolic vaDors

11 Any plate or metalliccoating for type 11 ex-posure from table I or IV.exceDt cadmium or zinc.

Parts will be period-l 11 ID-101 I

55


., ,,

9

‘0

.0

TABLE IX. Finish selections (continued). ,“ ,:I

“ype:xpo-iure

Applicable Finish ;Class of Part Conditions AffectingFinish Selection” ,

‘Parts cannot be lubri-cated and will not besubjected to highbearing pressures

P-104 or P-108Sliding wearingsurfaces suchas.guiderails, et cetera,,re-quiring electricalconductivity

Gears, cams, slides,et cetera.

II‘, .,

Parts cannot be lubri-cated and will besubjected to highbearing pressure

11 P-108

IAny type of part I An electrical conduct-

ive dissimilar metal11 Any plate for type 11

exposure per table I& MIL-STCI-889.\ contact is required

Hardened steel partssuch as coil springs,washers, etc., sub-..jectto hydrogenembrittlement

Plating is requiredfor protection dueto equipment design ,

I Any plate or metalliccoating for type I ex-Dosurefrom table I orIV except zinc plus D-10(llnit g:~~~ ~y. --+-.77

I,l,,r Illcl.al Iic

co~ti,ng for type II,expo-sure from table I or IVexcept zinc plus D-1OO.

‘,

FABRICATED FROM STAINLESS STEEL”ALLOYS

Parts will be expos-ed to environment inassembled equipment

Parts will not be ex-posed to environmentin assembled equipment

Parts will be exposedto environment in as-sembled equipment

Parts will not be ex-posed to environmentin assembled equipment

I F-200,”F-201, F-202,F-203, F-204

Large ”parts

I No finish required.

Small parts F-200, F-201, F-202,F-203, F-204.

I No finish required

Welded or machinedparts made of stain-less steel

Any type parts in-cluding interiorsurfaces of hollowmembers .-...._---T-.-.-=..‘Exhaust systems

D-200

II No finish required

1 No finish requiredorII


MIL-STD-808A(USAF)

● TABLE IX.. Finish selections (continued),. [

Class of Part \ Conditions Affecting Type Applicable FinishFinish Selection Expo-

1 sureI

FABRICATED FROM ALUMINUM-BASE ALLOYS

I Massive structural II Tank Pretreatment I F-400, F-401 , D-350,I

parts and assemblies is practical or D-353. - -brackets, gussets, Tank pretreatment is I F-400, F-401, D-350,and hardwa~e not practical or D-353”assemblies

Any type parts Parts will be subject- 1 D-353ed to high degree of orabrasion when IIfunctioning

Lesser structural Tank pretreatment, I F-400, F-401, F-402,parts and assemblies is practical 0-350, D-353such as racks, cases Tank pretreatment Icastings, housings, .F-401

panels, brackets,is not practical

~~~ .

Small hardware such Parts will be exposed I F-400, F-401 or F-402.as hinges, fasteners to the environmentcatches, handles, when assembled in thescrews, nuts, bolts, equipmentwashers, etc. Parts will be exposed I D-350, D-351, D-353

to the environmentwhen assembledin equipment and can-.

t ‘ot be “a’nted

Parts will not be ex- 1 Any plate for type 11posed to the environ- exposure per table I orment when assembled D-350.in the equipment

I !

Internal structural None 11 D-350. D-351. D-353parts such as chassis A non-conducting II D-350, F-306, orfor electrical equip- surface is required D-353.ment, brackets, in- Plating is required 11 Any plates for type Iside of panels, for contact with dis- exposure per table Iclamps, clips, hinges, similar metals and MIL-STD-889.etc.

57


TABLE IX. Finish selections (continued).!, a

Class of Part “., Conditions Affecting Type Applicable FinishFinish Selection ~xpo. .’. ”

sure ‘ ;

Parts made from A power electrical 11 D-3525000 and6000 alloys ,conducting surface

.,

is required “

Open hollow members ,, I ,F-402(Interior ‘surfaces) or

II

Closed hollow members(Interior surfaces),

I F-402or ,,11

PARTS FABRICATED FROM !vIAGNESIUM-BASEALLOYS

All parts I F-500II F-501

Open hollow members I F-502(Interior Surfaces) ‘, or

ii

‘Closed hollow m,emb,ers I(Interior surfaces)

F-502orII

FABRICATED FROM WOOD

All “wood surfaces I. F-600 or F-601unless otherwise orspecified II

Varnished surfaces I F-601orII

OTHER APPLICATIONS

Engines, automotive, I FF-700packette, etc. or

,, 11

Crankcase sealer-cast II FF-701iron housings ofclutch, transmissionsdifferentials, finaldrives, and brakes

,.

,,’

,,

“e

58


MIL-STD-808A(USAF)

TABLE IX. Finish selections (continued).

TypeClass of Part Conditions Affecting Expo- Applicable Finish

Finish Selection sure

OTHER APPLICATIONS

Generating plant I FF-702components subject tohigh temperatures(400°F to 1,OOO°F)

Pipelines and com- ‘1 FF-703pressed gas orcylinders II

59

. - -- *>>... -. .:-.... “~ >

. . .

..-” ,l.P/’. . . .. ..— ...-

.--’.%-2/ -


STANDARD;ZAT!ON DOCUMENT\ ltiPROVEMENT PROPOSAL(See lrutructions - Rpq&Sidej

00CUMENI’NLIMBER 2.OOCUME~TTITLE )

.NAME OFSUBMITTINGORGANIZATION 4.TYPEOF ORGANIZATION(M=kOU)

.0 “’VENDOR,. ,9

.O’k- “ “, “.AOOnE”~.(8frgr:.Cl~,Stiti,ZIPCOdr)

•1 ~ “, :’,,MANUFACTURER’

IPROBLEMAREAS ,.

a’ Pw~raph Number” ond Wording:,,, ,.,.

,,.

b. R-ommcndod Wording:

9c. Ro8son/Rstionalc for Rocommondmion:

REMARKS

. NAME OF SUBMITTER fkast, Fht, Ml] - Optional b. WORK TELEPHONE NUMBER (Jnclude AfwoCo&) - Optlon91

MAILING AOORESS (S-et, City. Wok, “ZIP Code) - Optionsl 6. DATE OF SUBMISSION (YYMMDDJ

IDO

FORM82 MAR 1426 PREVIOUS EDITION fS O@SOLETE.


Documents

MIL-STD-808A(USAF) 18 January 1983 SUPERSEDING MIL-STD-808