DIN EN ISO 4521-2009 金属和其它无机镀层.工程用电镀银和银合金镀层.规范和试验方法
Metallic and other inorganic coatings - Electrodeposited silver and silver alloy coatings for engineering purposes - Specification and test methods (ISO 4521:2008); English version of DIN EN ISO 4521:2009-01
This International Standard specifies requirements for electroplated silver and silver alloy coatings for
electrical, electronic and other engineering applications, including test methods. Engineering applications are
defined as those in which the coating essentially serves a non-decorative purpose.
Although this International Standard does not specify the condition, finish or surface roughness of the basis
material prior to electroplating, the appearance and serviceability of electroplated silver and silver alloy
coatings depend on the condition of the basis material. It is essential that the purchaser specifies the surface
finish and roughness of the basis material in order to conform to the product requirements.
This International Standard does not apply to coatings on screw threads or to coatings on sheet, strip or wire
in the non-fabricated form.