ISO 6158:2018
Metallic and other inorganic coatings — Electrodeposited coatings of chromium for engineering purposes
This document specifies requirements for electroplated coatings of metallic chromium, with or without undercoats, on ferrous and non-ferrous metals for engineering purposes. The coating designation provides a means of specifying the thickness of chromium appropriate for typical engineering applications.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied by the purchaser to the processor
5 Designation
5.1 General
5.2 Designation specification
5.3 Designation of basis metal
5.4 Designation of heat treatment requirements
5.5 Designation of type and thickness of metal coating
5.6 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 Stress relief heat treatment prior to coating
6.9 Hydrogen-embrittlement-relief heat treatment
6.10 Peening of metal parts
6.11 Use of undercoats
6.12 Stripping
6.13 Corrosion resistance/multilayer chromium plating
6.14 Surface roughness of electroplated metallic chromium coating
7 Sampling
Annex A (informative) Typical thickness of metallic chromium coatings specified in engineering applications
Annex B (normative) Thickness test methods for electroplated metallic chromium and other metallic coatings
Annex C (normative) Determination of cracks and pores in metallic chromium coatings
Annex D (normative) Classification of different quality/grate of roughness of electrodeposited metallic chromium coatings
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied by the purchaser to the processor
5 Designation
5.1 General
5.2 Designation specification
5.3 Designation of basis metal
5.4 Designation of heat treatment requirements
5.5 Designation of type and thickness of metal coating
5.6 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 Stress relief heat treatment prior to coating
6.9 Hydrogen-embrittlement-relief heat treatment
6.10 Peening of metal parts
6.11 Use of undercoats
6.12 Stripping
6.13 Corrosion resistance/multilayer chromium plating
6.14 Surface roughness of electroplated metallic chromium coating
7 Sampling
Annex A (informative) Typical thickness of metallic chromium coatings specified in engineering applications
Annex B (normative) Thickness test methods for electroplated metallic chromium and other metallic coatings
Annex C (normative) Determination of cracks and pores in metallic chromium coatings
Annex D (normative) Classification of different quality/grate of roughness of electrodeposited metallic chromium coatings
Bibliography