JB/T 11616-2013 (English Version) PDF

Scope: This standard specifies the technical requirements and test methods for trivalent chromium passivation working fluid and trivalent chromium passivation layer used to protect decorative zinc electroplating. It also stipulates the detection methods of trivalent chromium and hexavalent chromium in trivalent chromium passivation working fluid and the verification method of hexavalent chromium in trivalent chromium passivation layer. This standard is applicable to protective decorative zinc electroplating trivalent chromium passivation working fluid and trivalent chromium passivation layer. This standard does not apply to electroplated zinc. Trivalent chromium passivation is only a surface finish that provides a special color or improves the adhesion strength of paint.

JB/T 11616-2013 Referenced Document

GB/T 10125 Corrosion tests in artificial atmospheres—Salt spray tests*， 2021-08-20 Update
GB/T 12334 Metallic and other inorganic coatings--Definitions and conventions concerning the measurement of thickness
GB/T 3138 Metallic and other inorganic coatings.Surface treatment, metallic and other inorganic coatings.Vocabulary*， 2015-05-15 Update
GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates--Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 7466 Water quality--Determination of total chromium
GB/T 9791-2003 Chromate conversion coatings on zinc,cadmium,aluminium-zinc alloys and zinc-aluminium alloys-Test methods
GB/T 9792 Conversion coatings on metallic materials-Determination of coating mass per unit area-Gravimetric methods
GB/T 9799 Metallic and other inorganic coatings.Electroplated coatings of zinc with supplementary treatments on iron or steel