DEFSTAN 03-27/3(2005) : 2005

Foreword
Introduction
1 Scope
2 Warning
3 Normative References
4 Definitions
   4.2 Process Control Schedule
   4.3 Significant Surface
   4.4 Tensile Strength of Steels
        4.4.1 Tensile Strength
        4.4.2 Tensile strength/hardness relationship
5 Information to be Supplied to the Processor
6 Process Control
7 Preparation for Coating
8 Reclamation of Worn or Over-Machined Items
9 Condition of Substrate (Process Requirements)
10 Minimising the Risk of Hydrogen Embrittlement of Steel Items
11 Stress Relief
12 Introduction to Surface Compressive Stresses
   12.1 Shot Peening
   12.2 Other methods
13 Preparation for Plating
   13.1 General Requirements
   13.2 Cleaning
14 Electro-Deposition of Nickel
15 Post Plating Heat Treatment
   15.1 Steel
   15.2 Aluminium and aluminium alloys
16 Inspection, Sampling and Testing
   16.1 General
   16.2 Inspection
   16.3 Thickness
   16.4 Adhesion
   16.5 Hardness
17 Treatment of Items Rejected During Inspection and Test
Annex A - Nickel Plating Solutions and Conditions
   A.1 Process 1
   A.2 Process 2
   A.3 Process 3
   A.4 Process 4
   A.5 Process 5
Annex B - The Analysis of Nickel Plating Solutions
   B.1 General requirements
   B.2 Determination of Nickel
        B.2.1 Methodology
        B.2.2 Principle
        B.2.3 Reagents
        B.2.4 Special Apparatus
        B.2.5 Procedure
        B.2.6 Expression of results - Methods of calculation
   B.3 Determination of chloride
        B.3.1 Methodology
        B.3.2 Principle
        B.3.3 Reagents
        B.3.4 Procedure
        B.3.5 Expression of results
   B.4 Determination of ammonium
        B.4.1 Methodology
        B.4.2 Principle
        B.4.3 Reagents
        B.4.4 Special apparatus
        B.4.5 Procedure
        B.4.6 Expression of results - Methods of calculation
   B.5 Determination of total nitrogen
        B.5.1 Methodology
        B.5.2 Principle
        B.5.3 Reagents
        B.5.4 Special apparatus
        B.5.5 Procedure
        B.5.6 Expression of results - Methods of calculation
   B.6 Determination of Boric Acid
        B.6.1 Methodology
        B.6.2 Principle
        B.6.3 Reagents
        B.6.4 Special apparatus
        B.6.5 Procedure
        B.6.6 Expression of results - Methods of calculation
Annex C - Additional Requirements and Information
   C.1 General
        C.1.1 Deposit Hardness
        C.1.2 Galling
        C.1.3 Fatigue strength
        C.1.4 Spring steel
   C.2 Preparation for Plating
   C.3 Nickel Plating Solution
   C.4 Deposition
   C.5 Rinsing
Annex D - Adhesion Tests
   D.1 Adhesle Test
   D.2 Burnishing Test
   D.3 File Test
   D.4 Quenching Test
Annex E - Chemical Methods of Stripping Nickel Deposits
   E.1 Nickel (and Copper) on Aluminium
   E.2 Nickel Copper
   E.3 Nickel on Steel
   E.4 Proprietary Solutions

Specifies the requirements for the nickel-plating of ferrous metals, copper alloys, aluminium alloys and zinc alloys for one or more of the following purposes: (a) the production of wear-resistant surfaces; (b) the building up of worn or over-machined surfaces; (c) corrosion resistance; (d) to provide an undercoat for subsequent deposits, e.g. chromium.