BS 4641:1986

Withdrawn

View Superseded by

Method for specifying electroplated coatings of chromium for engineering purposes

Available format(s)

Hardcopy , PDF

Withdrawn date

30-06-2009

Language(s)

English

Published date

31-01-1986

Publisher

British Standards Institution

Foreword
Committees responsible
Method
1. Scope
2. Definitions
3. Exchange of information
4. Sampling
5. Treatment of basis metals before electroplating
6. Coatings
7. Heat treatment after electroplating
Appendices
A. Guidance on types and uses of chromium coatings
B. Heat treatment
C. Method for establishing peening conditions
D. Determination of coating thickness
E. Test for porosity of coatings on ferrous articles
F. Visual examination for cracks
Tables
1. Summary of information required
2. Peening intensities
3. Categories of steels and maximum tensile strengths
    corresponding to specified minimum tensile strengths
4. Recommendations for heat treatment, for stress
    relief, before electroplating (excluding surface-
    hardened parts)
5. Heat treatment after electroplating (excluding
    surface-hardened parts)
Figure
1. Test specimen mount

Method for specifying requirements for chromium coatings usually of substantial thickness on ferrous and non-ferrous metals. Covers stress relief treatment before coating, the appearance, surface finish, thickness, hardness, adhesion and porosity of the coating, heat treatment after coating and sampling.

Committee	STI/33
DevelopmentNote	Supersedes 84/51383 DC and BS 4641(1970) (08/2005)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Withdrawn
SupersededBy	BS EN ISO 6158:2004 BS EN ISO 6158:2011

BS 5411-6:1981	Methods of test for metallic and related coatings Vickers and Knoop microhardness tests
BS 1224:1970	Specification for electroplated coatings of nickel and chromium
BS 1134-1:1972	Method for the assessment of surface texture Method and instrumentation
BS 3745:1970	Method for the evaluation of results of accelerated corrosion tests on metallic coatings
BS 4758:1986	Method for specifying electroplated coatings of nickel for engineering purposes
BS 5411-1(1980) : 1980 AMD 8494	METHODS OF TEST FOR METALLIC AND RELATED COATINGS - DEFINITIONS AND CONVENTIONS CONCERNING THE MEASUREMENT OF THICKNESS
BS 6001(1972) : AMD 5054	SAMPLING PROCEDURES FOR INSPECTION BY ATTRIBUTES - SPECIFICATION FOR SAMPLING PLANS INDEXED BY ACCEPTABLE QUALITY LEVEL (AQL) FOR LOT - BY - LOT INSPECTION
BS 5411-7(1981) : 1980 AMD 8483	METHODS OF TEST FOR METALLIC AND RELATED COATINGS - PROFILOMETRIC METHOD FOR MEASUREMENT OF COATING THICKNESS