This International Standard specifies requirements for elec-trodeposited coatings of silver and its alloys for electrical, electronic and other engineering applications on metallic and non-metallic materials. Such coatings may or may not be subject to subsequent machining.
It does not apply to coatings on screw threads [see ISO 4042, Threaded components — Electroplated coatings components (at present at the stage of draft)] or to coatings on sheet or strip in the unfabricated form.
ISO 4521:1985 history
2008ISO 4521:2008 Metallic and other inorganic coatings - Electrodeposited silver and silver alloy coatings for engineering purposes - Specification and test methods
1985ISO 4521:1985 Metallic coatings; Electrodeposited silver and silver alloy coatings for engineering purposes