BS EN ISO 4527:2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied to the producer of the coating
  4.1 Essential information
  4.2 Additional information
5 Designation of basis metal, metal layers and heat treatment
  requirements
  5.1 General
  5.2 Designating the basis metal
  5.3 Designation of heat treatment requirements
  5.4 Designating the type and thickness of metal layers
  5.5 Examples of designations
6 Requirements
  6.1 Special test specimens
  6.2 Appearance
  6.3 Surface finish
  6.4 Thickness
  6.5 Hardness
  6.6 Adhesion
  6.7 Porosity
  6.8 Corrosion resistance
  6.9 Stress relief heat treatment prior to coating
  6.10 Hydrogen embrittlement relief heat treatment after
       coating
  6.11 Heat treatment to harden the coating
  6.12 Heat treatment to improve adhesion
  6.13 Wear resistance
  6.14 Solderability
  6.15 Chemical composition
  6.16 Peening of metal parts
  6.17 Undercoats and overcoats
7 Sampling
Annex A (normative) Heat treatment to improve adhesion and
        increase hardness
Annex B (informative) Thickness test methods
Annex C (informative) Guidance on thickness, composition
        and use of autocatalytic nickel-phosphorus coatings
Annex D (normative) Methods for chemical analysis of
         autocatalytic nickel coatings for phosphorus content
Bibliography

Describes the requirements and test methods for autocatalytic nickel-phosphorus alloy coatings applied from aqueous solutions on to metallic substrates.

This International Standard specifies the requirements and test methods for autocatalytic nickel-phosphorus alloy coatings applied from aqueous solutions on to metallic substrates.

This International Standard does not apply to autocatalytic nickel-boron alloy coatings, nickel-phosphorus composites and ternary alloys.

WARNING — The use of this International Standard may involve hazardous materials, operation and equipment. This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.