BS 1224:1970

Co-operating organizations
Foreword
Specification
1 Scope
2 Significant surface
3 Appearance
4 Heat treatment for steel
5 Requirements for coatings of nickel plus chromium
6 Requirements for coatings of nickel without chromium
Appendices
A Examples of service conditions for which the various
    service condition numbers are appropriate
B Determination of nickel and copper thickness
C Ductility test
D Determination of chromium thickness - coulometric
    method
E Determination of cracks and pores in chromium
    coatings
F File test for adhesion
G Quenching test for adhesion
H CASS test
J Corrodkote test
K Acetic salt test
Tables
1 Nickel plus chromium coatings on steel (or iron)
2 Copper plus nickel plus chromium coatings on steel
    (or iron)
3 Nickel plus chromium coatings on zinc alloy
4 Nickel plus chromium coatings on copper or copper
    alloy
5 Nickel plus chromium coatings on aluminium or
    aluminium alloy
6 Corrosion tests appropriate to each service
    condition number
7 Nickel coatings on steel (or iron)
8 Nickel coatings on zinc alloy
9 Nickel coatings on copper or copper alloy
10 Nickel coatings on aluminium or aluminium alloy

Nickel (with copper undercoat if required), with or without chromium topcoat, electrodeposited on steel (or iron), zinc alloy, copper or copper alloys, aluminium or alloys. Appearance, type, thickness of nickel and chromium, adhesion, corrosion resistance.