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

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

Superseded

View Superseded by

ELECTRO-DEPOSITION OF ZINC

Superseded date

04-02-2005

Published date

12-01-2013

Publisher

UK Ministry of Defence Standards

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Status	Superseded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	DEFSTAN 03-20/3(2005) : 2005
Supersedes	DTD 903D : MAY 70 DEFSTAN 03-20/1(1980) : 1980 AMD 1

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