Electroplated coatings of tin-nickel alloy. Specification and test methods

Electroplated coatings of tin-nickel alloy. Specification and test methods

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1   Scope and field of application

This International Standard specifies requirements for electroplated coatings of the intermetallic compound SnNi, with a composition of approximately 65 % (m/m) tin and 35 % (m/m) nickel.
It does not apply to
  1. a) threaded components;
  2. b) coatings on sheet, strip or wire in the unfabricated form, or on articles made from them;
  3. c) coatings on coil springs;
  4. d) electroplating of steels with tensile strength greater than 1 000 MPa1) (or of corresponding hardness), because such steels are subject to hydrogen embrittlement (see 8.2).