GB/T 9791-2003 English PDF

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GB/T 9791-2003: Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys -- Test methods
Status: Valid

GB/T 9791: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9791-2003	189	Add to Cart	3 days	Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys -- Test methods	Valid
GB/T 9791-1988	239	Add to Cart	2 days	Chromate conversion coatings on zinc and cadmium--Test methods	Obsolete

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Basic data

Standard ID: GB/T 9791-2003 (GB/T9791-2003)
Description (Translated English): Chromate conversion coatings on zinc, cadmium, aluminium-zinc alloys and zinc-aluminium alloys. Test methods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A29
Classification of International Standard: 25.200.20
Word Count Estimation: 7,785
Date of Issue: 2003-10-29
Date of Implementation: 2004-05-01
Older Standard (superseded by this standard): GB/T 9791-1988
Adopted Standard: ISO 3613-2000, MOD
Regulation (derived from): China Announcement of Newly Approved National Standards No. 14 of 2003 (No. 62 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies the following test methods: colorless chromate conversion coatings exist, zinc, cadmium, aluminum (mass fraction of 55% A1) zinc alloys and zinc aluminum (mass fraction of 5% A1) alloys colorless and colored chromate conversion coatings on the existence and content of hexavalent chromium, zinc and cadmium per unit area on the total chromium content, colorless and colored film mass per unit area, chromate conversion coatings satisfactory adhesion, chromium the film quality salt. These methods are applicable to: Use chemical or electrochemical method produces containing different proportions of trivalent chromium and hexavalent chromium colorless and colored chromate conversion coating, applies only without any additional covering layer (for example: film, water based or solvent -based polymer film or wax film) chromate conversion coating.

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