12P003R0_pc

DRAFT

MALAYSIAN 12P003R0

STANDARD

STAGE : PUBLIC COMMENT (40.20) DATE : 01/04/2014 - 31/05/2014

Specification for anodes, sacrificial zinc alloy OFFICER/SUPPORT STAFF: (/)

ICS: 47.020.05

Descriptors: anodes, sacrificial zinc alloy, specification, types of zinc anodes

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DEPARTMENT OF STANDARDS MALAYSIA

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Contents

Page Committee representation ..........................................................................................................ii National foreword....................................................................................................................... iii 1 Scope ............................................................................................................................ 1 2 Normative references ................................................................................................... 1 3 Classification................................................................................................................. 1 4 Composition and specification ...................................................................................... 2 5 Manufacturing quality ................................................................................................... 2 6 Marking and labelling .................................................................................................... 3 7 Packaging ..................................................................................................................... 3 8 Submissions and dimensions ....................................................................................... 3 9 Acquisition notices........................................................................................................ 3 10 Drawing and dimensions .............................................................................................. 3

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Committee representation The Industry Standards Committee on Metallic Materials and Semi-Finished Products (ISC P) under whose authority this Malaysian Standard was developed, comprises representatives from the following organisations: Association of Consulting Engineers Malaysia Association of Marine Industries of Malaysia Construction Industry Development Board Malaysia Department of Standards Malaysia Federation of Malaysian Manufacturers IKRAM QA Services Sdn Bhd Institute of Materials Malaysia Jabatan Kerja Raya Malaysia Malaysia Steel Association Malaysian Iron & Steel Industry Federation Master Builders Association Malaysia Ministry of International Trade & Industry Pertubuhan Akitek Malaysia SIRIM Berhad (National Centre for Machinery and Tooling Technology) SIRIM Berhad (National Precision Tooling (M) Sdn Bhd) SIRIM Berhad (Secretariat) SIRIM QAS International Sdn Bhd The Institution of Engineers, Malaysia Universiti Malaya Universiti Sains Malaysia Universiti Teknologi Malaysia The Technical Committee on Non-ferrous Metal and Ores which developed this Malaysian Standard consists of representatives from the following organisations: Department of Chemistry, Malaysia Minerals & Geoscience Department Malaysia Multi Minerals Laboratory Services Nihon Superior (M) Sdn Bhd Perwaja Steel Sdn Bhd Pusat Penyelidikan Mineral SIRIM Berhad (Secretariat) SIRIM QAS International Sdn Bhd Universiti Sains Malaysia Co-opted members: Newrise Channel (M) Sdn Bhd Science and Technology Research Institute for Defence Tentera Laut Diraja Malaysia Universiti Teknologi Malaysia

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© STANDARDS MALAYSIA 2014 - All rights reserved iii

Foreword This Malaysian Standard was developed by the Technical Committee on Non-ferrous Metal and Ores under the authority of the Industry Standards Committee on Metallic Materials and Semi-Finished Products. Compliance with a Malaysian Standard does not of itself confer immunity from legal obligations.

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Specification for anodes, sacrificial zinc alloy

1 Scope 1.1 This specification covers the requirements for zinc anodes in the form of slabs, plates, discs, and rods for corrosion protection (cathodic protection) of metals and alloys. 1.2 The anodes are primarily intended to reduce corrosion of surface ship, steel and aluminum equipment and structures, sea chests, sonar domes, and the seawater side of condensers and other heat exchangers. 1.3 This standard does not purport to address the safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2 Normative reference

MIL-A-8001K Anodes, Sacrificial Zinc Alloy

ASTM-F1182-07 Anodes, Sacrificial Zinc Alloy ASTM-A36 Standard Specification for Carbon Structural Steel ASTM-E290 Standard Test Method for Bend Testing of Material for Ductility

ASTM-E536 Standard Test Method for Chemical Analysis of Zinc and Zinc Alloys.

3 Classification 3.1 The letter designations of types of zinc anodes have the following meanings:

Table 1. Letter designations of types of zinc anodes

Letter Definition Remark

First Z Zink Marking the anode material

Second

H Hull slab

Indicates shape or function

T Teardrop shape

E Heat exchanger slab

R Rod, cylindrical

P Plate

B Bar, square

D Disc, segmented

M Mooring chain

Third

B Brass straps

Indicates the core

S Steel strap

C Core strap

P Pipe core

M Machine formed interlock core

N No core

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3.2 Zinc anode type ZEP shall comply with ASTM 1182 and divided into 3 types as follows: 3.2.1 Type A - square slab. 3.2.2 Type B - circular slab. 3.2.3 Type C - semicircular slab.

4 Composition and specification 4.1 Chemical composition for zinc anode shall comply as in Table 2. Other elements that not stated in Table 2 but exist in zinc anode is a contaminant and these elements shall not exceed 0.1%.

Table 2. Chemical composition for zinc anode

Lead (max %)

Iron (max %)

Cadmium (range %)

Copper (max %)

Aluminium (range %)

Zink (min %)

0.006 0.005 0.025 - 0.07 0.005 0.1 - 0.5 remaining

4.2 Zinc anode types ZHS, ZHC, ZSS and ZTS shall have steel core that complies with

ASTM A36/A36M.

4.3 For zinc anode types ZHS, ZHC, ZSS and ZTS, each core must be coated with zinc at

a minimum thickness 0.0127 mm (0.0005 inch). The layer shall be attached and free from

flaking. The layer must stick firmly to the metal.

4.4 Nominal weight of each zinc anode is disclosed. Reduction of 8% of the nominal weight

of each type of zinc anode is the minimum weight. Each type of zinc anode must meet the

minimum weight requirement. Total weight of the total zinc anode received when divided by the

total number, shall equal or exceed the minimum weight of the zinc anode. If weighing less than

the minimum weight, total rejection of the lot will be done.

5 Manufacturing quality

5.1 Zinc anode surface should be free from rags, cracks, holes and slag surface. The

fractured surface which is more than 3.175 mm (1/8 inch) shall be rejected.

5.2 For the zinc anode of thickness less than 50.8 mm (2 inch), shall be free of shrinkage

cavities exceeds the depth of 6.35 mm (¼ inch). While zinc anode which has a thickness of

50.8 mm (2 inch) or more shall be free of shrinkage cavities exceed the depth of 9.525 mm

(3/8 inch).

5.3 Irregular surface having the depth more than 3.175 mm (1/8 inch) shall be rejected.

5.4 Zinc anode for type ZRN and ZPN types shall have a smooth curved surface.

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6 Marking and Labeling

6.1 Zinc anode of types ZHS, ZHC and ZSS shall be permanently labeled with the word "DILARANG CAT" or "DO NOT PAINT" on exposed surfaces. For zinc anode types ZPN, ZTS and ZRN labelling are not needed.

6.2 Each zinc anode shall be permanently marked and labeled at least with the following: 6.2.1 Classification as in Table 1 6.2.2 Weight

7 Packaging

7.1 Zinc anode should be packaged in a suitable manner to avoid damage or wear as agreed by the buyer and the supplier.

8 Submission of documents 8.1 Supplier involved in supplying zinc anode should attach along the following documents during the submission:

8.1.1 Composition, classification and specifications 8.1.2 Certificate of origin from original equipment manufacturer

9 Acquisition notices

9.1 Acquisition of zinc anode based on composition that has been set shall include the following information: 9.1.1 Classification of zinc anode as in Table 1 9.1.2 Specification zinc anode which includes length, width, thickness, diameter and weight if needed. 9.1.3 Classification of zinc anode type ZEP (refer 3.2). 9.1.4 Quantity needed. 9.1.5 Additional requirements, if any.

10 Drawings and Dimensions

10.1 Drawings and dimensions of commonly used zinc anode is shown below.

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F

A

DB

I

G G

I

E

H

EXPOSED FACE

CORE

C

(a) Welded

F

E

Type

28-Z

9-Z

Bolt

M12x25

M12x25

Washer

A13

A13

Nut

M12

M12

Doubler

Bolt

Washer

Nut

D

B

A

(b) Bolted

EXPOSED FACE

C

GCORE

NOTES: 1. Anode may be cast with exposed face in the up or down position. 2. All dimension are in mm.

3. Tolerance ±3.175 mm.

NO WEIGHT AND

TYPE TYPE CODE

DIMENSION

A B C D E F

1 2.8 Kg Bolted

type 28 - Z ZTS 195mm 90mm 45mm 300mm 25mm 3mm

2 0.8 Kg Bolted

type 9 - Z ZTS 130mm 50mm 40mm 235mm 25mm 3mm

3 3 Kg Welded

type ZTS 165mm 105mm

50mm & 30mm

230mm 25mm 3mm

4 3 Kg Welded

type ZTS 195mm 90mm 40mm 275mm 25mm 3mm

Figure 1. Zinc, teardrop (steel strap), type ZTS

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Bolt

Washer

Doubler 5.0

Nut

C

F

E

D

B

D

A

(b) Bolted

Type

2.5-Z

Bolt

M6x20

Washer

A6.4

Nut

M6

Figure 2. Zinc hull slab (steel straps), type ZHS

NOTES: 1. Anode may be cast with strap in the up or down position. 2. All dimension (mm) refer to the wider and longer edges of the anodes.


D

FC

A

B

E

(a) Welded

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NO WEIGHT AND TYPE TYPE CODE

DIMENSION

A B C D E F

1 3 Kg Bolted type ZHS 300mm 75mm 110mm 30x16

2 4 Kg Bolted type ZHS 300mm 85mm 215 & 200mm 30x15

3 4.5 Kg Bolted type ZHS 300mm 85mm 200mm 30x15










13 1 Kg Welded type ZHS 310mm 140mm 60mm 25mm 3mm 40

14 3 Kg Welded type ZHS 300mm 200mm 95mm 30mm 3mm 25mm



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X

X

SECTION X-X

Propeller

shaft C

B

A

(a) Zinc, type annular/ circular.

Slef ocking nut M12

Washer M12 and bolt

M12 X 30

C

ISOMETRIC

B

A

E

F

G

D

TOP VIEW

(b) Zinc, soft iron/ mine plates, type ring.

Figure 3. Zinc, plate, no core, rolled type ZPN

NOTES: 1. Material location all steel parts to be galvanised. 2. All dimensions are in mm.


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NO WEIGHT AND TYPE TYPE CODE DIMENSION

A B C

35.5 Kg annular/circular 230mm & 157mm 180mm 36.5mm

32 Kg annular/circular 293mm & 215mm 144mm 39mm

4 20 Kg annular/circular ZPN 280mm & 192mm 90mm 44mm

14 Kg annular/circular ZPN 210mm & 162mm 90mm 24mm

5.6 Kg annular/circular ZPN 310mm & 250mm 30mm 30mm

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B

A

C

D

(a) Screw plug (male)

A

CB

E

(b) Screw plug (female)

Figure 4. Zinc, rod (no core), type ZRN.

NOTES: 1. Material location all steel parts to be galvanised. 2. All dimensions are in mm.


NO PATT NO WEIGHT AND TYPE TYPE CODE DIMENSION

A B C D E

1 5340-34-003-0690 0.13 Kg screw plug (female)

type ZRN 90mm 16mm 8.4mm 1.5/150 17mm

2 5340-34-004-0375 I/L 0283/X-1030 Screw plug type ZRN 92mm 22mm 16mm 11UNC

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D

PLAN VIEW

X X

SECTION X-X

B

A

C

F

J

Galvanised steel

HE

Exposed face

G

(a) Rectangle

Nut

A

C

E

D

B

Doubler Bolt

Washer

(b) Curve

Exposed

face

Type

EZ-12-B

EZ-7-B

EZ-4-B

Bolt

M16x30

M16x30

M10x20

Washer

A17

A17

A10.5

Nut

M16

M16

M10

Figure 5. Zinc hull slab (core strap), type ZHC

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NOTES: 1. Anode may be cast with exposed face in the up or down position. 2. All dimensions are in mm.


NO WEIGHT AND TYPE TYPE CODE

DIMENSION

A B C D E F G H I J

1 22 Kg Bolted ZHC 600mm 300mm 30x20 102mm 60mm

2 7 Kg Bolted ZHC 290mm 110mm 160mm

30x16 130mm 28mm

3 8.4 Kg & 8 Kg Bolted type ZHC 310mm 200mm 30x15 140mm 40mm

4 5 Kg Bolted type ZHC 160mm 500mm 30x16 80mm 20mm

5 1.5 Kg Bolted type ZHC 140mm 60mm 30x16 80mm 20mm

6 3.6 Kg Bolted type ZHC 200mm 110mm 100mm 30mm



9 3 Kg Bolted type F X 3 ZHC 180mm 145mm 40x15 100mm 25mm




13 0.7 Kg Bolted ZHC 130mm 70mm 20x10 50mm 30mm

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Acknowledgement Members of Technical Committee on Non-ferrous Metal and Ores Name Organisation Tn Hj Mohd. Ariff b. Omar (Chairman) Minerals and Geoscience Department

Malaysia Ms Nur Zawani Abdol Raub (Secretary) SIRIM Berhad Mr Muzayin b. Alimon Minerals and Geoscience Department

Malaysia Mr Muhammad Ridhuan Newrise Channel (M) Sdn Bhd Dr Mohd Yazid bin Ahmad Science and Technology Research Institute for

Defence Ms Rohaidah Ibrahim SIRIM QAS International Sdn Bhd Lt. Kdr. Azlin bin Dato' Hj. Alias Tentera Laut Diraja Malaysia Dr Ahmad Badri Ismail Universiti Sains Malaysia

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