e g Surface Protection of Metal Parts a s u Surface ...read.pudn.com/downloads175/doc/813979/vw13750en20050201.pdfVW 137 50: 2005-02 The restrictions stipulated in VW 603 61 must be

Klass.-Nr. 50 20 0; 02 64 2 February 2005

Surface Protection of Metal Parts Surface Protection Types, Codes

VW 137 50

Konzernnorm Descriptors: corrosion, rust protection, surface protection, metal, protection type,

code, corrosion protection

Page 1 of 23 Fachverantwortung/Responsibility Normung/Standards (EZTD, 1733)

K-QS-32/2 Koeppen Tel:-25803 Laudien Dr. Eisenberg Wiesner Tel: +49-5361-9-29064 Sobanski

Confidential. All rights reserved. No part of this document may be transmitted or reproduced without permission of a Standards Department of the Volkswagen Group. Parties to a contract can only obtain this standard via the B2B supplier platform “www.vwgroupsuppy.com”.

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Contents Page

1 Scope .................................................................................................................................. 2 2 Description .......................................................................................................................... 3 2.1 Code structure..................................................................................................................... 3 2.2 Example of description........................................................................................................ 3 3 Requirements...................................................................................................................... 3 3.1 General requirements ......................................................................................................... 3 3.2 Drawing specifications ........................................................................................................ 4 3.3 Weldability........................................................................................................................... 4 3.4 Agents impairing wetting ability ........................................................................................... 4 3.5 Friction behavior.................................................................................................................. 5 3.6 Zinc coatings ....................................................................................................................... 5 3.7 Screws, nuts, threaded parts and shaped parts.................................................................. 5 3.8 Commercial surface protection types.................................................................................. 5 3.9 Parts without surface protection.......................................................................................... 6 3.9.1 Joining elements ................................................................................................................. 6 3.9.2 Other parts (e.g. sheets) ..................................................................................................... 6 3.10 Assignment of surface protection types and codes............................................................. 6 4 Referenced standards....................................................................................................... 12 A.1 Comparison of “not for new design”/“for new design” ....................................................... 14 A.2 Surface protection types without code .............................................................................. 15 A.3 Surface protection types according to VDA test sheet 235-104 and VW 137 50.............. 15 A.4 Invalid Ofl descriptions ...................................................................................................... 16

Changes The following changes have been made as compared to Volkswagen standard VW 137 50, 1999-04: � Surface protection type “phosphated, passivated” (code b101) stipulated. � Surface protection type “phosphated, silver gray (for internal applications)” (code b111)

stipulated. � Surface protection type “phosphated, yellow glazing, for internal applications (water-based

paint)” (code b112) stipulated. � Surface protection type “manganese phosphated” (code b130) restricted in terms of the

possible applications (no longer permitted for new design of joining elements, replacement is b140).

� Cr(VI)-free surface protection types “electrolytically zinc-coated” (codes c341, c641, c342, c642, c343, c643, c347, c647, c696 and c697) added.

� Cr(VI)-containing surface protection types “electrolytically zinc-coated” (codes c350, c650, c351, c651, c355, c360, c660, c683, c385, c685) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1).

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� Surface protection type “bright chrome-plated, with microcracks” (code f320) removed

(replaced by Ofl-f350). � Layer thicknesses for surface protection types “tin-coated” (code g...) stipulated. � Surface protection types for electrolytically deposited Al and Al/Mg alloy coatings (codes q600,

q605, q610, q615) added. � Cr(VI)-containing surface protection types “Zn/Fe alloy coated” (codes r600, r605, r610, r620

and r630) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1).

� Cr(VI)-free surface protection types “Zn/Fe alloy coated” (codes r301 and r302) added. � Surface protection types “Zn/Ni alloy coated” (codes r640, r650, r660, r665, r670, r675)

restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1).

� Cr(VI)-free surface protection types “Zn/Ni alloy coated” (codes r642, r643, r649, r672, r673 and r677) added.

� Cr(VI)-free surface protection types “duplex coated” (codes s611, s617, s621 and s627) added.

� Cr(VI)-containing surface protection types “duplex coated” (codes s610, s615, s620 and s625) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1).

� Surface protection types “zinc flake coatings” (codes t300, t310, t320, t345, t600, t620 and t645) restricted in terms of the possible applications (no longer permitted for new designs, for replacement see Table A.1).

� Cr(VI)-free surface protection types “zinc flake coatings” (codes t602, t611, t615 and t647) added.

� Surface protection type “black finished” (code u110) re-included. � Cr(VI)-containing surface protection type “chromated” (code v110) restricted in terms of the

possible applications (no longer permitted for new designs, replaced by Ofl-v111). � Cr(VI)-free surface protection type “Cr(VI)-free passivated” (code v111) added. � Surface protection type “anodized” (code w650) removed. � Surface protection types “coil-anodized” (codes w660 and w670) restricted in terms of the

possible applications (no longer permitted for new designs). � Surface protection types “anodized” (codes w180, w680, w690, w695) added. � Surface protection type “multi-layer coated, medium protection” (code x310) removed. � Surface protection types “multi-layer coated, heavy protection” (codes x611, x612 and x613)

added. � Surface protection types “zinc-dust paint coating” (codes y600 and y650) re-included. � Specifications for parts without surface protection (Section 3.9) formulated in more detail. � Comparison list of VDA/Volkswagen descriptions (Table A.3) included.

Previous issues

1953-06; 1954-07; 1956-10; 1958-04; 1959-03; 1959-06; 1963-03; 1963-05; 1966-06; 1966-10; 1967-05; 1967-11; 1969-10; 1970-11; 1971-12; 1972-02; 1974-08; 1975-06; 1976-07; 1980-09; 1983-10; 1986-10; 1989-12; 1991-11; 1994-10; 1999-04

1 Scope

This standard applies to the identification of general surface protection types of vehicle parts and units in drawings and technical documentation. Separate technical supply specifications (TL standards) apply to special surface protection types without identification by surface code (see Appendix A.1).

Page 3 VW 137 50: 2005-02

2 Description

2.1 Code structure

The abbreviation for surface protection ('Ofl-' from the German word for 'surface') is followed by a code with four characters, taken from Table 2.

2.2 Example of description

Surface protection: electrolytic zinc alloy coating, transparent Cr(VI)-free passivated, with lubricant treatment, heavy protection, according to TL 244.

VW 137 50 – Ofl-r645

3 Requirements

3.1 General requirements

The vehicle parts and units are categorized according to their corrosion load and assigned to a protection class with grade (according to Table 1) by the responsible Engineering Department upon agreement with the Volkswagen AG Central Laboratory (K-QS-32) and/or the AUDI AG Test Laboratory (I/GQ-322).

Table 1 – Classification of vehicle parts Vehicle part categories Corrosion load Protection class Parts with the following features: (a) non-visible in installed condition, (b) corrosion protection serves only as protection for transportation, (c) corrosion protection is not needed for proper performance.

Minor load. Light protection grade 1

Interior and exterior components in a protected installation position. Not for joining elements (for exceptions see VW 011 10).

Medium load. Medium protection grade 3

Parts that are subjected to direct open-air weathering (e.g. chassis, engine, transmission). Parts that are visible in installed condition (also seen from the vehicle underside). Parts with the following features: (a) corrosion protection is required to ensure proper performance and (b) use in the interior and exterior due to reduction of material types policy, e.g. joining elements.

Heavy load. Heavy protection grade 6

Finish, appearance and post-treatment Protection class Type of method Abbreviation for surface protection

Page 4 VW 137 50: 2005-02

The restrictions stipulated in VW 603 61 must be observed for mechanical joining elements.

The following standards apply to thread dimensions prior to surface treatment: VW 116 10, VW 116 14, VW 116 24, VW 116 25 and VW 116 27. For thread dimensions after surface treatment, VW 116 11 and VW 116 15 apply.

All-metal clamping nuts must always be treated with additional or integrated lubricants.

Avoidance of hazardous substances according to VW 911 01. The coatings used must be free of compounds containing Cr(VI) or lead.

3.2 Drawing specifications

If a certain surface protection is required for the entire part or for several parts in an ASSY, the code shall be entered in the surface protection title block; e.g. Ofl-t650 (see also VW 010 58). If several surface protection types can be applied optionally, the codes for all permissible treatments shall be given,

e.g. Ofl-r673/x630.

If only partial protection is applied to a part, “see drawing” shall be entered in the surface protection title block; a wide dash-dot line with a datum line (see Figure 1) marks the given area on the part.

If there is only a small area on the part that is without surface protection, the unprotected area shall be marked (Figure 2). In this case “see drawing” shall be entered in the surface protection title block.

Figure 1 Figure 2

If different surface treatments are required for a part, “see drawing” shall be entered in the surface protection title block. The given areas on the part shall be clearly indicated.

If parts from one ASSY are separately coated (one or more different surface treatments), “see drawing” shall be entered in the surface protection title block of the assembly drawing. The surface treatments shall be referred to separately in the part-related drawings.

3.3 Weldability

If parts with surface protection are to be welded to each other or to other metal parts, the parts shall be tested for weldability. Ofl-c340 shall be provided as the standard surface protection.

3.4 Agents impairing wetting ability

Lubricants and slushing oils shall be free of silicone oils and other agents that significantly impair wetting ability.

without surface protection

Page 5 VW 137 50: 2005-02

3.5 Friction behavior

The influence of the surface protection on the friction behavior, particularly for parts with metric ISO thread, shall be determined by testing and matched to the performance characteristics.

The total coefficient of friction of a test batch with surface protection type b140 and with all surface protection types with additional or integrated lubricant treatment shall be in the range from 0.09 to 0.15 (except for joining elements with adhesive or locking coating as well as tapping screws, Powerlock® screws and clamping nuts [all-metal and PA ring]).

3.6 Zinc coatings

Electrolytically deposited or electroplated coatings are not permissible for high-strength steel and/or standard parts with a tensile strength of Rm > 1,000 MPA and threaded parts with a property class of � 10.9.

Exceptions are possible for components that are only subjected to pressure.

Zinc flake coatings according to code letter t shall preferably be used.

Only in exceptional cases when electrolytically deposited zinc coating or zinc alloy coating is absolutely necessary for functional reasons can these coatings be applied with integrated heat treatment according to DIN 50969. The use of such coatings is limited to tensile strength values of 1,200 MPa for standard parts (see VW 602 50).

Electrolytically zinc-coated parts or zinc alloy coated parts shall be post-treated in passivation solutions in order to improve corrosion resistance.

Cr(VI)-free passivated zinc coating systems without additional coatings (paint coats) are, apart from the joining elements, only permissible for use in the passenger compartment.

The appearance of zinc/nickel alloy coatings shall be matched to their immediate environment. Only transparent passivation treatment is permissible for electrically conducting connections.

Additional sealing of the coating is a further improvement of the corrosion protection of zinc-coated parts and zinc alloy coated parts respectively.

3.7 Screws, bolts, nuts, threaded parts and shaped parts

The test specifications according to Table 2 apply to the thread-free areas of screws, bolts, nuts and similar threaded or shaped parts; the next protection class down is applied to the thread and shank.

The application of the protective layers must not result in the h-position being exceeded in the case of external threads or the H-position being fallen below in the case of internal threads.

3.8 Commercial surface protection types

Commercial surface protection types can be used for less important applications (e.g. steel wire). They are not tested for corrosion resistance however. If this kind of protection is sufficient for a part, the code letter of the method and the digits 010 shall be stated. The description for commercial coating for example would look like the following: Ofl-x010. Distinction can also be made between method and finish; e.g. for commercial hot-dip tin coating: Ofl-g020.

The commercial surface protection types, e.g. Ofl-c010 “commercial zinc coating” and Ofl-r010 “commercial electrolytical zinc-alloy coating” must not contain any Cr(VI) compounds.

Page 6 VW 137 50: 2005-02

3.9 Parts without surface protection

3.9.1 Joining elements

Parts with the description “bright”, surface protection type “without”, “-” or without any description shall, as indicated in DIN ISO 8992, be supplied in lightly oiled condition. If in exceptional cases unoiled parts must be supplied, this must be indicated in the drawing by means of the entry “not oiled”.

3.9.2 Other parts (e.g. sheets)

QP-A001 applies to parts without surface protection with the description surface protection type “without” or “bright, oiled”. If in exceptional cases unoiled parts must be supplied, this must be indicated in the drawing by means of the entry “not oiled”.

3.10 Assignment of surface protection types and codes

The specifications of Table 2 shall apply. Surface protection types represented in bold italics shall preferably be used for joining elements; surface protection types with a frame are standard surface protection for components without threads.

Surface protection types in brackets contain Cr(VI) and are not available for new designs.

Table A.3 presents the surface protection types according to VW 137 50 that correspond to the protection types of VDA1 test sheet 235-104. Table A.4 lists all the invalid protection types that were included in earlier issues of VW 137 50.

Table 2 – Surface protection type codes Protection type Codes for protection classes

Code letter Coating process

Finish/system; requirements

Post-treatment and appearance

1 light

3 medium

6 heavy

not oiled b100 - - passivated b101 - - oiled, greased, wax coated b110

2) - -

silver gray (for internal applications) b111 - -

yellow glazing, for internal applications (water-based paint)

b112 - -

see Footnote 1

manganese phosphated and oiled b130

10), 22) - -

b phosphated 1)

thin layer zinc phosphated; TL 240

oiled b140 - -

Footnotes: see Page 11

1 VDA = German Association of the Automotive Industry

Page 7 VW 137 50: 2005-02

Table 2 (continued) Protection type Codes for protection classes


Finish/bath type; requirements


1 light

3 medium

6 heavy

hot-dip zinc coated TL 217 without post-treatment - c330 c630

without post-treatment 3) - c310 c610

passivated - c340 c640 passivated and sealed - c341 c641 thick-layer passivated - c342 c642 thick-layer passivated and sealed - c343 c643

thick-layer passivated, with lubricant treatment

24) - c347 c647

yellow chromated - (c350)10)

(c650)10)

yellow chromated and sealed - (c351)

10) (c651)

10)

yellow chromated, with lubricant treatment - (c355)

5),10) -

Method optional for high-strength parts, however restricted acc. to Section 3.6; TL 217

olive chromated 6) - (c360)

10) (c660)

10)

olive chromated 6) - - (c683)

10)

acid bright zinc coated; TL 217 olive chromated, with

lubricant treatment 7), 24)

- (c385)10)

(c685)5),10)

light yellow chromated, sealed - - (c686)

10)

light yellow chromated, sealed, with lubricant treatment

7), 24)

- - (c687)10)

passivated and sealed 7) - - c696

c electrolytically zinc coated

4)

weakly acidic, for contact with Mg; TL 194

passivated and sealed, with lubricant treatment

7), 24) - - c697

semi-bright nickel plated

without post-treatment - e310 8) e610

9)

e electrolytically nickel plated bright nickel plated without post-treatment - e320

8) e620

9)

mirror-bright, with microcracks - - f620 f electrolytically

chrome-plated bright chrome-plated; TL 203

mirror-bright - f350 f650 electrolytically tin coated bright tin coated without post-treatment g100 g300 g600

g 11)

hot-dip tin coated without post-treatment g120 g320 g620

k electrolytically copper-plated without post-treatment k110

12) k310

10),12) -

silvery matte without post-treatment - - q600

Al coating, TL 243 silvery matte, with lubricant treatment

24)

- - q605

silvery gloss without post-treatment - - q610

q electrolytically aluminum-alloy coated

Al/Mg coating, TL 243 silvery gloss, with lubricant

treatment 24)

- - q615


Page 8 VW 137 50: 2005-02





1 light

3 medium

6 heavy

alloy and/or electrolyte type optional; TL 153

black chromated 6) - - (r600)

10)

silver passivated - r301 - Fe-alloyed; TL 153

black passivated, sealed - r302 - alloy and/or electrolyte type optional; TL 153

black chromated, with lubricant treatment

24) - - (r605)

10)

low-alloy with Fe and Co; TL 153 black chromated

6) - - (r610)

10)

low-alloy with Fe, alkaline, cyanide-free; TL 153


10)

low-alloy with Co, alkaline or acidic; TL 153


10)

transparent passivated, sealed - - r640

10)

transparent passivated - - r642 transparent passivated, sealed r643 Ni alloy, alkaline

TL 244 transparent passivated, sealed, with lubricant treatment

24)

- - r645

transparent passivated, only for castings - - r649 Ni alloy, weakly

acidic; TL 244 yellow chromated

5), 6), 10) - - (r650)

10)

yellow chromated 5), 6)

- - (r660)10)

yellow chromated, with lubricant treatment

24)

- - (r665)10)

black chromated 5), 6)

- - (r670)10)

black passivated - - r672 black passivated, sealed - - r673 black chromated, with lubricant treatment

24) - - (r675)

10)

r electrolytically zinc alloy coated

4)

Ni alloy, alkaline; TL 244

black passivated, with lubricant treatment

24)

- - r677


Page 9 VW 137 50: 2005-02





1 light

3 medium

6 heavy

yellow chromated acc. to TL 217 plus cathodic dip-coating

- - (s610)10)

passivated acc. to TL 217 plus cathodic dip-coating, black

- - s611

yellow chromated acc. to TL 217 plus cathodic dip-coating, with lubricant treatment

24)

- - (s615)10)

passivated acc. to TL 217 plus cathodic dip-coating, black, with lubricant treatment

24)

- - s617

yellow chromated acc. to TL 244 plus cathodic dip-coating

- - (s620)10)

thick-layer passivated acc. to TL 244 plus cathodic dip-coating, black

- - s621

yellow chromated acc. to TL 244 plus cathodic dip-coating, with lubricant treatment

24)

- - (s625)10)

s

duplex coating (zinc or zinc/ nickel plus cathodic dip-coating)

Zn/Ni; TL 196

thick-layer passivated acc. to TL 244 plus cathodic dip-coating, black, with lubricant treatment

24)

- - s627

TL 245 - (t300)10)

(t600)10)

silver gray; use in exposed installation positions (engine, chassis), however not for threaded parts with metric ISO thread; TL 245

- - t602

silver gray; for components that are used in the body-in-white before painting or for which a special adhesive compatibility is required (microencapsulation); TL 245

- t31010)

t610

silver gray; for components which can be exposed to high temperatures (2000 h/200 °C), not for threaded parts with metric ISO thread; TL 245

- - t611

silver gray; standard surface protection for nuts with non-metallic locking element; TL 245 - - t615

TL 245 - (t320)10)

(t620)10)

with organic coating, containing PTFE; preferably black, otherwise acc. to color chart;

15) TL 233

- t330 t630

TL 245 - (t345)10),14)

(t645)10),23)

silver gray, standard surface protection for threaded parts with metric ISO thread; TL 245 - - t647

t zinc flake coating

with organic coating, preferably black; TL 233 - t350 t650 Footnotes: see Page 11

Page 10 VW 137 50: 2005-02

Table 2 (continued) Protection type Codes for protection class


Finish/electrolyte type; requirements


1 light

3 medium

6 heavy

black finish DIN 50938 oiled u110 - - u

Zn-ThD layer 22)

silver gray, passivated; TL 184 - - u610 chromated (v110)

10),13) - -

v passivated v111

19) - -

transparent, matte - - w610 transparent, bright - - w620 dyed, matte - - w630 dyed, bright - - w640 transparent, matte - - w660

10)

decorative application; TL 212

dyed, bright - - w670 10)

transparent anodized; TL 212 w180 - w680 hard anodized; TL 212 - - w690

w anodized

hard anodized and impregnated; TL 212 - - w695 pretreatment not specified

16), single-layer liquid

paint or cathodic-dip coating; TL 260 x100 x300 x600

multi-layer structure; TL 218 - - x610

zinc phosphated and painted piano lacquer structure;

TL 218 - - x611

multi-layer structure; TL 218 - - x612

electrolytically zinc coated and painted piano lacquer structure;

TL 218 - - x613

Zn, Fe or Mn phosphated, single-layer liquid paint or cathodic-dip coating

16); TL 260 x130 x330 -

zinc phosphated, single-layer liquid paint or cathodic-dip coating

16); TL 260 - - x630

17)

zinc phosphated; dual layer paint; 16)

TL 260 - - x631 zinc phosphated; electrolytically zinc coated (individual parts) and painted;

16), 20) TL 227 - - x632

zinc phosphated (passivated in exceptional cases); hot dipped zinc coated (semi-finished product) and painted;

16), 20) TL 227

- - x633

x painted

zinc phosphated, thick layer cathodic-dip coating or cathodic-dip coating + dip paint; TL 260

- - x634

layer forming;16) TL 256 - - x650

x powder paint-coated layer forming and primed;

16) TL 256 - x651 base layer, e.g. for leaf springs; TL 214 - - y600

y paint-coated with zinc dust heat-resistant zinc dust; TL 214 - - y650

z electroplated tin/zinc coating passivated - z300

18) -


Page 11 VW 137 50: 2005-02

Table 2 (continued) Protection type Codes for protection class




1 light

3 medium

6 heavy

1) After phosphating, steel parts with tensile strength values above 1,200 MPa may be subjected to appropriate heat treatment up to a

max. of 200 °C to avoid brittle fracture induced by hydrogen (DIN EN 12476). In addition to the specifications made in Table 3, the following periods of time shall be taken into account for the given protection class

when performing the salt spray fog test according to DIN 50021-SS: for b100, b101, b130 2 hours without base metal corrosion, for b140 4 hours without base metal corrosion, for b110 6 hours without base metal corrosion, for b111 48 hours without base metal corrosion, for b112 20 hours without base metal corrosion

2) Only oil or oil emulsions permissible for threaded parts. 3) For parts that are paint-coated in-house. 4) Immediately after surface treatment, steel parts with tensile strength values above 1,200 MPa that are subjected to tensile stress shall

be subjected to appropriate heat treatment to avoid brittle fracture induced by hydrogen. Verification by tension testing according to DIN 50969.

5) Metric ISO threaded parts shall be treated with lubricant according to TL 521 32. 6) Mainly for vehicles of the German Federal Armed Forces. 7) Preferably for steel parts in ASSY with magnesium to avoid galvanic corrosion. 8) Coating thickness > 10 µm. 9) Coating thickness > 20 µm. 10) Not for new design. 11) Requirements in protection class 1 = DIN 50965-Fe//Sn4, coating thickness > 4 µm;

protection class 3 = DIN 50965-Fe//Sn12, coating thickness > 12 µm; in protection class 6 = DIN 50965-Fe//Sn20, coating thickness > 20 µm.

12) k110 coating thickness (3 +2) µm, k310 coating thickness (12 +3) µm.

13) No change of surface after 240 h of salt spray fog test according to DIN 50021 (e.g. no zinc corrosion of zinc die-castings). 14) Treated with blue lubricant, only for LT 2 joining elements. 15) Containing PTFE, not suitable for bonding. 16) Color specification according to drawing, otherwise black. 17) Requirements also apply to dip-primed car body components. 18) Sn: 70 ± 10%, balance: Zn. Coating thickness � 5 µm. No base metal corrosion after 360 hours of a salt spray fog test (SS) according

to DIN 50021. 19) No change of surface after 120 h of salt spray fog test according to DIN 50021 (e.g. no zinc corrosion of zinc die-castings). 20) Instead of single-layer liquid paint, cathodic dip paint can be demanded; if this is the case, the addendum “KTL” must be added to the

code. 21) The use of Zn-ThD layers is currently only possible with the agreement of K-QS-32. 22) For characterization of the layer see TL 235. No longer permitted for new joining element designs, replaced by Ofl-b140. 23) Metric ISO threaded parts shall be treated with lubricant according to TL 521 65. 24) Treated with lubricant according to TL 521 32.

Page 12 VW 137 50: 2005-02

4 Referenced standards2

QP A001 Prelubes, Slushing Oils (General), Blank Washing Oils, Drawing Oils and Drawing Agents; Quality Requirements

TL 153 Zinc-Iron Coatings; Requirements for Surface Protection

TL 184 Zinc Thermal Diffusion Layers (Zn-ThD Layers); Requirements for Surface Protection

TL 194 Coating for Joining Elements in Contact with Magnesium; Requirements

TL 196 Duplex Coating Systems for Small Parts and Bulk Parts; Requirements for Surface Protection

TL 203 Electroplated Nickel/Chromium Coatings; Requirements for Surface Protection

TL 212 Anodized Coatings on Aluminum Parts; Requirements for Surface Protection

TL 214 Zinc-Dust Paint Coating; Requirements for Surface Protection

TL 217 Zinc Coatings; Requirements for Surface Protection

TL 218 Multicoat Painting in Body Color on Metallic Exterior Body Components; Requirements

TL 227 Paint Coating of Zinc-Coated Metal Surfaces; Requirements for Surface Protection

TL 233 Non-Electrolytically Applied Zinc Flake Coatings with Top Coating; Requirements for Surface Protection

TL 235 Manganese Phosphated Surfaces; Requirements

TL 240 Thin-Layer Zinc Phosphating; Requirements for Surface Protection

TL 243 Electrolytically Deposited Al Coatings and Al/Mg Alloy Coatings; Surface Protection Requirements

TL 244 Zinc/Nickel Alloy Coatings; Requirements for Surface Protection

TL 245 Non-Electrolytically Applied Zinc Flake Coatings; Surface Protection Requirements

TL 256 Powder Paint on Metal Surfaces; Requirements for Surface Protection

TL 260 Paint Coating of Metal Surfaces; Requirements for Surface Protection

TL 521 32 Lubricant for Threaded Fastening Elements with Electrolytically Applied Coatings or Those of Stainless Steel; Requirements

TL 521 65 Lubricant (Greenish) for Threaded Fasteners; Material Requirements

VW 010 58 Technical Drawings; Lettering

VW 011 10 Threaded Joints; Design, Assembly and Process Assurance

VW 116 10 Metric ISO Threads; Limit Dimensions for Medium Tolerance Class; External Thread 6g, Internal Thread 6H

VW 116 11 Metric ISO Threads; Limit Dimensions with Surface Protection Layer for Medium Tolerance Class 6g/6H

VW 116 14 Metric ISO Threads; Limit Dimensions for Coarse Tolerance Class; External 8g, Internal 7H

2 In this Section, terminological inconsistencies may occur as the original titles are used.

Page 13 VW 137 50: 2005-02

VW 116 15 Metric ISO Threads; Limit Dimensions with Protection Coating for Coarse

Tolerance Class (8g/7H)

VW 116 24 Metric ISO Threads; Limit Dimensions for 6G/6f Tolerance Zone, Male 6f, Female 6G

VW 116 25 Metric ISO Threads; Limit Dimensions for Tolerance Class 8f/7G; External Thread 8f, Internal Thread 7G

VW 116 27 Thread Limit Dimensions for External Threads of Tolerance Class 6e; Metric ISO Threads

VW 602 50 High-Strength Screws and Similar Threaded Parts; Technical Supply Specifications

VW 603 61 Mechanical Joining Elements; Parts Reduction; General Guidelines

VW 911 01 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Avoidance of Hazardous Substances

VDA 235-104 Cr(VI)-freie Oberflächenschutzarten für Verbindungselemente mit metrischem Gewinde (Cr(VI)-Free Surface Protection Types for Joining Elements with Metric Thread – only available in German)

DIN 50021 Spray Tests with Different Sodium Chloride Solutions

DIN 50938 Black Oxide Coatings on Iron or Steel – Requirements and Test Methods

DIN 50965 Electroplated Coatings; Tin-Coatings on Iron Steel and on Copper and Copper Alloys

DIN 50969 Testing of High-Strength Steel Building Elements for Resistance to Hydrogen-Induced Brittle Fracture and Advice on the Prevention of Such Fracture

DIN ISO 8992 Fasteners; General Requirements for Bolts, Screws, Studs and Nuts

DIN EN 12476 Phosphate Conversion Coatings of Metals – Method of Specifying Requirements

Page 14 VW 137 50: 2005-02

Appendix A (informative)

A.1 Comparison of “not for new design”/“for new design”

See Table A.1

Table A.1 Surface protection type not permitted for new designs

Replacement surface protection type for new designs

Ofl-c350 Ofl-c342 (for weld nuts and welded bolts Ofl-c340) Ofl-c650 Ofl-c642 (for weld nuts and welded bolts Ofl-c340) Ofl-c351 Ofl-c343 Ofl-c651 Ofl-c643 Ofl-c355 Ofl-c347 (for weld nuts and welded bolts Ofl-c340) Ofl-c360 and Ofl-c660 Ofl-t630, olive-green Ofl-c683 Ofl-c696 (for components in contact with Mg) Ofl-c385 Ofl-c697 (for joining elements in contact with Mg) Ofl-c685 Ofl-c697 (for joining elements in contact with Mg) Ofl-r600 Ofl-r672 Ofl-r605 Ofl-r677 Ofl-r610 Ofl-r301 (or Ofl-r302, if the part must be black in appearance),

for joining elements Ofl-r672 Ofl-r620 Ofl-r301 (or Ofl-r302, if the part must be black in appearance),

for joining elements Ofl-r672 Ofl-r630 Ofl-r301 (or Ofl-r302, if the part must be black in appearance),

for joining elements Ofl-r672 Ofl-r640 Ofl-r643 Ofl-r650 Ofl-r642 Ofl-r660 Ofl-r642 Ofl-r665 Ofl-r645 Ofl-r670 Ofl-r672 Ofl-r675 Ofl-r677 Ofl-s610 Ofl-s611 Ofl-s615 Ofl-s617 Ofl-s620 Ofl-s621 Ofl-s625 Ofl-s627 Ofl-t300 Ofl-t610, for threaded parts with metric ISO thread Ofl-t647 1) Ofl-t310 Ofl-t610, for threaded parts with metric ISO thread Ofl-t647 1)

(temperature range restricted) Ofl-t320 Ofl-t611 (temperature range restricted),

for threaded parts with metric ISO thread Ofl-t647 1) Ofl-t345 Ofl-t647 2) Ofl-t600 Ofl-t610, for threaded parts with non-metric thread Ofl-r642,

for threaded parts with metric ISO thread Ofl-t647 1) Footnotes: see Page 15

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Table A.1 (continued)

Surface protection type not permitted for new designs

Replacement surface protection type for new designs

Ofl-t620 Ofl-t611 (temperature range restricted), for threaded parts with metric ISO thread Ofl-t647 1)

(temperature range restricted) Ofl-t645 Ofl-t647 2) Ofl-v110 Ofl-v111 1) or Ofl-t610, if threaded parts are used in the body-in-white before painting or for threaded parts with microencapsulation. 2) or Ofl-t615 for nuts with non-metallic locking element.

A.2 Surface protection types without code

Apart from the surface protection types specified in VW 137 50, there are further surface protection types that do not have a code. The technical supply specifications listed in Table A.2 shall apply to these.

Table A.2 – Surface protection types without a code TL Heading 152 Powder coating for cylinder block and crankcase 155 Ternary composite layer for high-strength joining elements 187 Ball pins, nitrocarburated 193 Flake metal coatings for brake disks 215 Electroplated chromium and nickel/chromium coatings for piston rods 216 Corrosion protection for drive shafts 221 Electroplated chromium and nickel/chromium coatings for brake pistons 222 Corrosion protection coatings for brake lines 235 Manganese phosphated surfaces 236 Nickel/phosphorus coatings 238 Surface protection of steel disk wheels 239 Surface protection of alloy wheels 241 Heavy-coat phosphating 242 Organic coatings containing fluorine 243 Electrolytically deposited Al-coatings 247 Paint coating of cylinder head covers 261 Painting on coil springs 262 Cavity-forming chassis parts; corrosion protection 265 Duplex coating for pipes 524 83 AI and Zn-AI hot dip coatings for power steering tubes

A.3 Surface protection types according to VDA test sheet 235-104 and VW 137 50

Table A.3 compares the Cr(VI)-free surface protection types for joining elements with metric ISO thread described in VDA test sheet 235-104; 2003-09 with counterpart surface protection types from VW 137 50.

Page 16 VW 137 50: 2005-02

Table A.3

Description Type of surface protection layer according to VDA 235-104 according to VW 137 50

Thin-layer phosphating VDA 235-104.10 Ofl-b140

Electroplated zinc coating, transparent passivated VDA 235-104.20 Ofl-c347

Electroplated zinc alloy coating, transparent passivated

VDA 235-104.25 Ofl-r645

Electroplated zinc alloy coating, black passivated VDA 235-104.30 Ofl-r677

Zink flake coating, silver VDA 235-104.40 Ofl-t610

Zinc flake coating with top coat, silver VDA 235-104.42 Ofl-t647

Zinc flake coating with top coat, black VDA 235-104.50 Ofl-t630

A.4 Invalid Ofl descriptions

The following Table A.4 lists all surface protection types that have been part of previous issues of VW 137 50 and have been revoked. The date of the last issue that the surface protection was mentioned in is stated together with the surface protection type to be used instead.

Table A.4 – Invalid Ofl descriptions Ofl- replaced for

Ofl- Designation Date

joining elements

with metric ISO thread

general use

a110 quenched and tempered black, oiled, light protection 11.91 b140 b110 b10 phosphated, non-oiled, light protection 10.83 b100 b100 b11 phosphated, oiled, greased, waxed, light protection 10.83 b140 b110 b12 phosphated, black oiled, light protection 07.76 b140 b130 b13 phosphated, lubricant phosphated, light protection 10.83 t647 1) TL 241 b31 phosphated, oiled, greased, waxed, medium protection 10.83 t647 1) TL 241 b310 phosphated, oiled, greased, waxed, medium protection 10.94 t647 1) TL 241 b61 phosphated, oiled, greased, waxed, heavy protection 10.83 t647 1) TL 241 b610 phosphated, oiled, greased, waxed, heavy protection 10.94 t647 1) TL 241 c10 electrolytically zinc coated, matte zinc coated, light protection 06.75 r645 2) c310

c11 electrolytically zinc coated, optional, without post-treatment, light protection 10.83 r645 2) c310


c111 electrolytically zinc coated, matte zinc coated, transparent chromated, light protection 07.76 r645 2) c340


c13 hot-dip zinc coated, without post-treatment, light protection 07.76 - c330 Footnotes: see Page 23

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c14 electrolytically zinc coated, optional, transparent chromated, bright, light protection 10.83 r645 2) c340

c140 electrolytically zinc coated, optional, transparent chromated, bright, light protection 10.94 r645 2) c340

c15 electrolytically zinc coated, optional, yellow chromated, light protection 10.83 r645 2) c340

c150 electrolytically zinc coated, optional, yellow chromated, light protection 10.94 r645 2) c340

c16 electrolytically zinc coated, bright zinc coated, olive-green chromated, light protection 06.75 t630, olive 1) t650, olive 1)

c160 electrolytically zinc coated, bright zinc coated, olive-green chromated, light protection 11.91 t630, olive 1) t650, olive 1)

c17 electrolytically zinc coated, optional, black chromated, light protection 10.83 r677 r302

c170 electrolytically zinc coated, optional, black chromated, light protection 11.91 r677 r302

c18 electrolytically zinc coated, acid bright zinc coated, without post-treatment, light protection 07.76 t647 c340

c181 electrolytically zinc coated, acid bright zinc coated, transparent chromated, light protection 07.76 c697 c340

c31 electrolytically zinc coated, optional, without post-treatment, medium protection 10.83 r645 2) c310

c311 electrolytically zinc coated, matte zinc coated, transparent chromated, medium protection 07.76 r645 2) c340

c312 electrolytically zinc coated, matte zinc coated, yellow chromated, medium protection 07.76 r645 2) c342

c313 electrolytically zinc coated, matte zinc coated, olive chromated, medium protection 07.76 t630, olive 1) t650, olive 1)

c32 electrolytically zinc coated, optional, without post-treatment, medium protection 07.76 r645 2) c310

c33 hot-dip zinc coated, without post-treatment, medium protection 10.83 - c330

c34 electrolytically zinc coated, optional, transparent chromated, bright, medium protection 10.83 r645 2) c340

c345 electrolytically zinc coated, optional, transparent chromated, bright, with lubricant treatment, medium protection 11.91 r645 2) c340

c35 electrolytically zinc coated, optional, yellow chromated, medium protection 10.83 r645 2) c342

c36 electrolytically zinc coated, optional, olive chromated, medium protection 10.83 t630, olive 1) t650, olive 1)

c361 electrolytically zinc coated, optional, olive chromated, sealed, medium protection 04.94 t630, olive 1) t650, olive 1)

c365 electrolytically zinc coated, optional, olive chromated, medium protection, with lubricant treatment 11.91 t630, olive 1) t650, olive 1)

c37 electrolytically zinc coated, optional, black chromated, medium protection 10.83 r677 r302

c370 electrolytically zinc coated, optional, black chromated, medium protection 11.91 r677 r302

c375 electrolytically zinc coated, optional, black chromated, with lubricant treatment, medium protection 11.91 r677 r302

c38 electrolytically zinc coated, acid bright zinc coated, without post-treatment, medium protection 07.76 t647 1) c340

c380 electrolytically zinc coated, cyanide, yellow chromated, with lubricant treatment, medium protection 11.91 t647 1) c340

c381 electrolytically zinc coated, acid bright zinc coated, transparent chromated, medium protection 07.76 c697 3) c340


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c382 electrolytically zinc coated, acid bright zinc coated, yellow chromated, medium protection 11.91 c697 3) c342

c383 electrolytically zinc coated, acid bright zinc coated, olive chromated, medium protection 11.91 t630, olive c342

c39 mechanically zinc coated, yellow chromated, medium protection 10.83 t647 1), 2) c342

c390 mechanically zinc coated, yellow chromated, medium protection 11.91 t647 1), 2) c342

c61 electrolytically zinc coated, optional, without post-treatment, heavy protection 10.83 r645 2) c610

c611 electrolytically zinc coated, matte zinc coated, transparent chromated, heavy protection 07.76 r645 2) c640

c612 electrolytically zinc coated, matte zinc coated, yellow chromated, heavy protection 07.76 r645 2) c642

c613 electrolytically zinc coated, matte zinc coated, olive chromated, heavy protection 07.76 t630, olive 1) t650, olive 1)

c62 electrolytically zinc coated, optional, without post-treatment, heavy protection 07.76 r645 2) c610

c63 hot-dip zinc coated, without post-treatment, heavy protection 10.83 - c650

c64 electrolytically zinc coated, optional, transparent chromated, bright, heavy protection 10.83 r645 2) c640

c645 electrolytically zinc coated, optional, transparent chromated, bright, with lubricant treatment, heavy protection 11.91 r645 2) c640

c65 electrolytically zinc coated, optional, yellow chromated, heavy protection 10.83 r645 2) c642

c655 electrolytically zinc coated, optional, yellow chromated, with lubricant treatment, heavy protection 11.91 r645 2) c642

c66 electrolytically zinc coated, optional, olive chromated, heavy protection 10.83 t630, olive 1) t650, olive 1)

c661 electrolytically zinc coated, optional, olive chromated, sealed, heavy protection 04.94 t630, olive 1) t650, olive 1)

c67 electrolytically zinc coated, optional, black chromated, heavy protection 10.83 r677 r302

c670 electrolytically zinc coated, optional, black chromated, heavy protection 11.91 r677 r302

c675 electrolytically zinc coated, optional, black chromated, with lubricant treatment, heavy protection 11.91 r677 r302

c68 electrolytically zinc coated, acid bright zinc coated, without post-treatment, heavy protection 07.76 t647 c640

c681 electrolytically zinc coated, acid bright zinc coated, transparent chromated, heavy protection 07.76 c697 3) c640

c682 electrolytically zinc coated, acid bright zinc coated, yellow chromated, heavy protection 11.91 c697 3) c640

c683 electrolytically zinc coated, acid bright zinc coated, olive chromated, heavy protection 11.91 t630, olive 4) t650, olive 4)

c685 electrolytically zinc coated, acid bright zinc coated, olive chromated, with lubricant treatment, heavy protection 11.91 t630, olive 4) t650, olive 4)

c69 mechanically zinc coated, yellow chromated, heavy protection 10.83 t647 1), 2) c642

c690 mechanically zinc coated, yellow chromated, heavy protection 11.91 t647 1), 2) c642

d11 electrolytically cadmium plated, matte cadmium plated, without post-treatment, light protection 07.76 t647 1) t602 1)

d12 electrolytically cadmium plated, bright cadmium plated, without post-treatment, light protection 07.76 t647 1) t602 1)

d13 electrolytically cadmium plated, bright cadmium plated, transparent chromated, light protection 07.76 t647 1) t602 1)


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d14 electrolytically cadmium plated, bright cadmium plated, yellow chromated, light protection 06.75 t647 1) t602 1)

d15 electrolytically cadmium plated, bright cadmium plated, olive green chromated, light protection 06.75 t630, olive 1) t650 1)

d31 electrolytically cadmium plated, matte cadmium plated, without post-treatment, medium protection 07.76 t647 1) t602 1)

d310 electrolytically cadmium plated, matte cadmium plated, without post-treatment, medium protection t647 1) t602 1)

d32 electrolytically cadmium plated, optional, without post-treatment, medium protection 10.83 t647 1) t602 1)

d320 electrolytically cadmium plated, optional, without post-treatment, medium protection 10.86 t647 1) t602 1)

d33 electrolytically cadmium plated, bright cadmium plated, transparent chromated, medium protection 07.76 t647 1) t602 1)

d34 electrolytically cadmium plated, optional, transparent chromated, medium protection 10.83 t647 1) t602 1)

d340 electrolytically cadmium plated, optional, transparent chromated, medium protection 10.86 t647 1) t602 1)

d35 electrolytically cadmium plated, optional, yellow chromated, medium protection 10.83 t647 1) t602 1)

d350 electrolytically cadmium plated, optional, yellow chromated, medium protection 10.86 t647 1) t602 1)

d36 electrolytically cadmium plated, optional, olive chromated, medium protection 10.83 t630, olive 1) t650, olive 1)

d360 electrolytically cadmium plated, optional, olive chromated, medium protection 10.86 t630, olive 1) t650, olive 1)

d37 electrolytically cadmium plated, optional, black chromated or dyed, medium protection 10.83 t630 1) t650 1)


d61 electrolytically cadmium plated, matte cadmium plated, without post-treatment, heavy protection 07.76 t647 1) t602 1)

d62 electrolytically cadmium plated, optional, without post-treatment, heavy protection 10.83 t647 1) t602 1)

d620 electrolytically cadmium plated, optional, without post-treatment, heavy protection 10.86 t647 1) t602 1)

d63 electrolytically cadmium plated, bright cadmium plated, transparent chromated, heavy protection 07.76 t647 1) t602 1)

d64 electrolytically cadmium plated, optional, transparent chromated, heavy protection 10.83 t647 1) t602 1)

d640 electrolytically cadmium plated, optional, transparent chromated, heavy protection 10.86 t647 1) t602 1)

d65 electrolytically cadmium plated, optional, yellow chromated, heavy protection 10.83 t647 1) t602 1)

d650 electrolytically cadmium plated, optional, yellow chromated, heavy protection 10.86 t647 1) t602 1)

d66 electrolytically cadmium plated, optional, olive chromated, heavy protection 10.83 t630, olive 1) t650, olive 1)

d660 electrolytically cadmium plated, optional, olive chromated, heavy protection 10.86 t630, olive 1) t650, olive 1)




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e11 electrolytically nickel plated, matte nickel plated, without post-treatment, light protection 10.83 - e320

e110 electrolytically nickel plated, matte nickel plated, without post-treatment, light protection 10.94 - e320

e12 electrolytically nickel plated, bright nickel plated, without post-treatment, light protection 10.83 - e320

e120 electrolytically nickel plated, bright nickel plated, without post-treatment, light protection 10.94 - e320

e31 electrolytically nickel plated, matte nickel plated, without post-treatment, medium protection 10.83 - e320

e32 electrolytically nickel plated, bright nickel plated, without post-treatment, medium protection 10.83 - e320

e61 electrolytically nickel plated, matte nickel plated, without post-treatment, heavy protection 10.83 - e620

e62 electrolytically nickel plated, bright nickel plated, without post-treatment, heavy protection 10.83 - e620

f10 chrome-plated, low-glare, metallic, bluish, light protection 11.70 - f350 f11 chrome-plated, metallic, bluish matte, light protection 11.70 f350 f350 f12 chrome-plated, metallic, bluish bright, light protection 11 70 f350 f350 f13 chromized, metallic, bluish matte, light protection 11.70 f350 f350 f14 chromized, metallic, bluish bright, light protection 11.70 f350 f350 f30 electrolytically chrome-plated, low-glare, medium protection 10.83 f350 f350 f300 electrolytically chrome-plated, low-glare, medium protection 11.91 f350 f350

f31 electrolytically chrome-plated, bright chrome-plated, medium protection 07.76 f350 f350

f32 electrolytically chrome-plated, bright chrome-plated, mirror-bright, medium protection 10.83 f350 f350

f320 electrolytically chrome-plated, bright chrome-plated, mirror-bright, medium protection 04.99 f350 f350

f33 chromized, metallic, bluish matte, medium protection 11.70 f350 f350 f34 chromized, metallic, bluish, bright, medium protection 11.70 f350 f350 f60 electrolytically chrome-plated, low-glare, heavy protection 10.83 f350 f350 f600 electrolytically chrome-plated, low-glare, heavy protection 11.91 f620 f620

f61 electrolytically chrome-plated, bright chrome-plated, heavy protection 07.76 f620 f620

f63 chromized, metallic, bluish matte, heavy protection 11.70 f620 f620 f64 chromized, metallic, bluish, bright, heavy protection 11.70 f620 f620

g10 electrolytically tin coated, bright tin coated, without post-treatment, light protection 10.83 g605 g100

g11 electrolytically tin coated, matte tin coated, without post-treatment, light protection 10.83 g605 g100

g110 electrolytically tin coated, matte tin coated, without post-treatment, light protection 10.94 g605 g100

g12 hot-dip tin coated, without post-treatment, light protection 10.83 g605 g120

f62 electrolytically chrome-plated, bright chrome-plated, mirror-bright, heavy protection 10.83 f620 f620

g13 hot-dip tin coated, silver-gray, with spangles, matte, light protection 11.70 g605 g120

g30 electrolytically tin coated, bright tin coated, without post-treatment, medium protection 10.83 g605 g300

g31 electrolytically tin coated, matte tin coated, without post-treatment, medium protection 10.83 g605 g300

g310 electrolytically tin coated, matte tin coated, without post-treatment, medium protection 10.94 g605 g300


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g32 hot-dip tin coated, without post-treatment, medium protection 10.83 - g320

g33 hot-dip tin coated, silver-gray, with spangles, matte, medium protection 11.70 - g320

g60 electrolytically tin coated, bright tin coated, without post-treatment, heavy protection 10.83 g605 g600

g61 electrolytically tin coated, matte tin coated, without post-treatment, heavy protection 10.83 g605 g600

g610 electrolytically tin coated, matte tin coated, without post-treatment, heavy protection 10.94 g605 g600

g62 hot-dip tin coated, without post-treatment, heavy protection 10.83 - g620 g63 hot-dip tin coated, silver-gray, with spangles, matte, heavy protection 11.70 - g620 h11 electrolytically lead-coated, without post-treatment, light protection 10.83 g605 g600 h110 electrolytically lead-coated, without post-treatment, light protection 10.94 g605 g600

h31 electrolytically lead-coated, without post-treatment, medium protection 10.83 g605 g600

h310 electrolytically lead-coated, without post-treatment, medium protection 10.94 g605 g600

h610 electrolytically lead-coated, without post-treatment, heavy protection 10.94 g605 g600 k11 electrolytically copper-plated, without post-treatment, light protection 10.83 k110 - m11 electrolytically brass-plated, without post-treatment, light protection 07.76 k110 -

r655 electrolytically zinc alloy coated, Ni alloy, weakly acidic, yellow chromated, with lubricant treatment, heavy protection 10.94 r645 r649

s600 duplex coating for bulk parts (invalid TL 196/05.94) s617 s611

s605 duplex coating for bulk parts, with lubricant treatment (invalid TL 196/05.94) s617 s611

u11 black finished, oiled, light protection 10.83 u140 u110 v11 chromated, light protection 10.83 - v111 w11 anodized, matte, light protection 02.72 - w610 w12 anodized, mirror-bright, light protection 02.72 - w620 w31 anodized, matte, medium protection 02.72 - w610 w32 anodized, mirror-bright, medium protection 02.72 - w620 w61 continuously anodized, colorless, matte, heavy protection 10.83 - w610 w62 continuously anodized, colorless, mirror-bright, heavy protection 10.83 - w620 w63 stationary anodized, acc. to color chart, matte, heavy protection 10.83 - w630

w64 stationary anodized, acc. to color chart, mirror-bright, heavy protection 10.83 - w640

w65 stationary anodized, colorless, matte, heavy protection 10.83 - w620 w650 anodized, colorless, mirror-bright, heavy protection 04.99 - w620 w66 stationary anodized, colorless, mirror-bright, heavy protection 10.83 - w610 w67 stationary anodized, colorless, bright, heavy protection 10.83 - w640

x10 paint-coated, pretreatment not compulsory, color specification acc. to drawing, otherwise preferably black, light protection 10.83 - x100

x11 paint-coated, with pretreatment, acc. to color chart or special combination chart, light protection 08.74 - x130

x13 paint-coated, pretreatment: layer formation, color specification acc. to drawing, otherwise preferably black, light protection 10.83 - x130

x30 paint-coated, pretreatment not compulsory, color specification acc. to drawing, otherwise preferably black, medium protection 10.83 - x300

x31 paint-coated, colorless, medium protection 11.70 - x330 x310 paint-coated, acc. to the color chart, medium protection 04.99 - x330

x32 paint-coated, chromated, acc. to color chart or special combination chart, medium protection 08.74 - x330


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x33 paint-coated, pretreatment: layer formation, color specification acc. to drawing, otherwise preferably black, medium protection 10.83 - x330

x332 electrolytically zinc coated and subsequently paint-coated 10.94 - x632

x333 paint-coated, pretreatment: layer formation, color specification acc. to drawing, otherwise preferably black, medium protection 10.94 - x633

x34 powder paint-coated, pretreatment optional, color specification acc. to drawing, otherwise preferably black, medium protection 10.83 - x650

x340 powder paint-coated, pretreatment optional, color specification acc. to drawing, otherwise preferably black, medium protection 10.94 - x650

x36 powder paint-coated, pretreatment optional, acc. to color chart or special combination chart, medium protection 10.83 - TL 524 51

x360 powder paint-coated, pretreatment optional, acc. to color chart or special combination chart, medium protection 10.94 - TL 524 51

x380 powder paint-coated, cylinder block and crankcase, powder coated, medium protection 10.94 - TL 152

x60 paint-coated, pretreatment not compulsory, color specification acc. to drawing, otherwise preferably black, heavy protection 10.83 - x600

x61 paint-coated, pretreatment: zinc phosphating, acc. to color chart or special combination chart, heavy protection 10.83 - x630

x62 paint-coated, chromated, acc. to color chart or special combination chart, heavy protection 02.72 - x630

x63 paint-coated, pretreatment: layer formation, color specification acc. to drawing, otherwise preferably black, heavy protection 10.83 - x630

x65 powder paint-coated, pretreatment: zinc phosphated, color specification acc. to drawing, otherwise preferably black, heavy protection

10.83 - x650

x67 powder paint-coated, pretreatment: zinc phosphating, acc. to color chart or special combination chart, heavy protection 10.83 - TL 524 51

x670 powder paint-coated, pretreatment: layer formation; powder coated acc. to color chart or special combination chart 10.94 - TL 524 51

x68 whirl sintered, pretreatment: film or layer formation, color specification acc. to drawing, otherwise preferably black, heavy protection

07.76 - none

x69 whirl sintered, pretreatment: film or layer formation, acc. to color chart or special combination chart, heavy protection 07.76 - none

y10 paint-coated with zinc dust, conductive (spot weldable), light protection 10.83 - y610

y11 paint-coated with zinc dust, spot welding paint, light protection 02.72 - y610 y12 paint-coated with zinc dust, spot welding paste, light protection 02.72 - y610 y15 treated with permanent lubricant, e.g. Molykote, light protection 11.70 y610 y610

y30 paint-coated with zinc dust, conductive (spot weldable), medium protection 10.83 y610 y610

y31 paint-coated with zinc dust, without temperature requirements, medium protection 10.83 - y610

y32 paint-coated with zinc dust, spot welding paste, medium protection 02.72 - y610

y33 paint-coated with zinc dust, high-temperature resistant to 600 °C, medium protection 10.83 - y620


y60 paint-coated with zinc dust, conductive (spot weldable), heavy protection 10.83 y600 y600

y61 paint-coated with zinc dust, without temperature requirements, heavy protection 10.83 y600 y600


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y63 paint-coated with zinc dust, high-temperature resistant to 600 °C, heavy protection 10.83 - y650


y65 paint-coated with zinc dust, coil coated, heavy protection 07.76 - y650 y100 paint-coated with zinc dust, conductive, light protection 10.94 - y600 y300 paint-coated with zinc dust, conductive, medium protection 10.94 y600 y600

y310 paint-coated with zinc dust, without temperature requirements, medium protection 10.94 y600 y600


y610 paint-coated with zinc dust, without temperature requirements, heavy protection 10.94 y600 y600


10 optional procedure; selection to be made acc. to manufacturing method, light protection 07.76 - -

30 optional procedure; selection to be made acc. to manufacturing method, medium protection 07.76 - -

1) not for ground connections, in such cases r645 applies 2) not for welded parts; c340 for welded parts 3) only for Mg contact, t647 in all other cases 4) not for Mg contact, c697 for Mg contact

Documents

e g Surface Protection of Metal Parts a s u Surface ...read.pudn.com/downloads175/doc/813979/vw13750en20050201.pdfVW 137 50: 2005-02 The restrictions stipulated in VW 603 61 must be