This second edition cancels and replaces the first edition (i. e. ISO 2179:1972). 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 threaded components, coatings on cheet, stsrip or wire in the unfabricated form, coatings on coil springs, electroplating of steels with tensile strength greater than 1 000 MPa.