GB/T 9791-2003 (English Version) PDF

Standard No.: GB/T 9791-2003
Language: Chinese, Available in English version
Release Date: 2003
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 9791-2003
Replace: GB/T 9791-1988

Scope: This standard specifies the test methods for the following items: - presence of colorless chromate conversion coating; - zinc, cadmium, aluminum (55% Al by mass fraction)-zinc alloy and zinc-aluminum (5% mass fraction Presence and content of hexavalent chromium in colorless and colored chromate conversion coatings of Al) alloys; - total chromium content per unit area on zinc and cadmium; - mass per unit area of colorless and colored coatings; - chromium Satisfactory adhesion of the chromate conversion coating; - the quality of the chromate coating. These methods are applicable to: - colorless and colored chromate conversion coatings containing different proportions of trivalent and hexavalent chromium produced by chemical or electrochemical means; : Chromate conversion coatings of oil film, water-based or solvent-based polymer film or wax film).

GB/T 9791-2003 history

2003 GB/T 9791-2003 Chromate conversion coatings on zinc,cadmium,aluminium-zinc alloys and zinc-aluminium alloys-Test methods
0000 GB/T 9791-1988