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DEFSTAN 03-20/2(1994) : 1994 AMD 1 1996

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

ELECTRO-DEPOSITION OF ZINC

Superseded date

04-02-2005

Published date

12-01-2013

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Preface
Section One - General
1 Scope
2 WARNING
3 Related Documents
4 Definitions
5 Information to be Supplied to the Processor
6 Process Control
Section Two - Process Requirements
7 General
8 Heat Treatment
9 Surface Preparation
10 Zinc Plating
11 Washing
12 Passivation
13 Heat Treatment Relief of Hydrogen Embrittlement
Section Three - Inspection and Test
14 Inspection
15 Selection of Test Samples
16 Visual Inspection
17 Adhesion
18 Thickness of Coating
19 Freedom from Mercury
20 Retreatment of Items Rejected on Inspection
Annex A - Method for the Determination of Mercury
Annex B - Adhesion Tests
Annex C - Method for the Determination of Average Thickness

Describes the requirements for the electro-deposition of zinc on non-corrosion resisting steel items and on copper-based alloy items and corrosion resisting steel items.

DevelopmentNote
Supersedes DEFSTAN 03-20/1(1980) & DTD 903D (07/2003)
DocumentType
Standard
PublisherName
UK Ministry of Defence Standards
Status
Superseded
SupersededBy
Supersedes

DEFSTAN 03-29/3(2002) : 2002 PROTECTION OF METALLIC SPRINGS AGAINST CORROSION
DEFSTAN 03-29/2(1997) : 1997 PROTECTION OF METALLIC SPRINGS AGAINST CORROSION
DEFSTAN 03-4/4(1998) : 1998 THE PRE-TREATMENT AND PROTECTION OF STEEL ITEMS OF SPECIFIED MAXIMUM TENSILE STRENGTH EXCEEDING 1450 MPA
DEFSTAN 03-32(PT6)/3(2002) : 2002 PRE-TREATMENT AND PAINTING OF VEHICLES, ENGINEER EQUIPMENT AND COMPONENTS - PART 6: SYSTEMS FOR SPECIALISED VEHICLES, COMPONENTS AND SUBSTRATES INCLUDING DISTINCTIVE COLOURS
DEFSTAN 21-5/2(2004) : 2004 CODE OF PRACTICE FOR PROTECTIVE FINISHES
DEFSTAN 03-32(PT4)/3(2002) : 2002 PRE-TREATMENT AND PAINTING OF VEHICLES, ENGINEER EQUIPMENT AND COMPONENTS - PART 4: SYSTEMS FOR FERROUS METAL, EXCLUDING ARMOUR
DEFSTAN 03-29/1(1988) : 1988 PROTECTION OF METALLIC SPRINGS AGAINST CORROSION

BS 2656:1972 Specification for zinc anodes, zinc oxide and zinc salts for electroplating
DEFSTAN 03-4/4(1998) : 1998 THE PRE-TREATMENT AND PROTECTION OF STEEL ITEMS OF SPECIFIED MAXIMUM TENSILE STRENGTH EXCEEDING 1450 MPA
DEFSTAN 03-21/3(2002) : 2002 MECHANICAL METHODS FOR THE INDUCEMENT OF RESIDUAL SURFACE COMPRESSIVE STRESSES
DEFSTAN 03-14/2(1995) : 1995 ELECTRO-DEPOSITION OF CHROMIUM FOR ENGINEERING PURPOSES
DEFSTAN 03-33/1(1993) : 1993 CHROMATE PASSIVATION OF CADMIUM AND ZINC SURFACES
BS 427:1990 Method for Vickers hardness test and for verification of Vickers hardness testing machines
DEFSTAN 03-2/3(1995) : 1995 CLEANING AND PREPARATION OF METAL SURFACES

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