1 Scope
This standard specifies the test methods for trivalent chromium electroplating solution and the technical requirements for trivalent chromium plating. It also specifies the inspection methods for trivalent chromium and verification methods for hexavalent chromium in trivalent chromium electroplating solution.
This standard is applicable to trivalent chromium electroplating chromium composite coating for decorative protective copper+nickel+ chromium and nickel+chromium electroplating.
Note: considering environmental factors, hexavalent chromium may cause high dense pollution to the environment. Human being or animals are very difficult to metabolize once they absorb hexavalent chromium. While the impacts form trivalent chromium is not as serious as hexavalent chromium and the process sludge is less. Trivalent chromium electroplating instead of hexavalent chromium electroplating may reduce the harm to the environment.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements substrate on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
