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YB/T 4680-2018Corrosion of metals and alloys. Evaluation of chromium-free passivation on the galvanized sheet (English PDF)

金属和合金的腐蚀镀锌薄板无铬钝化评价方法

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Issued by

Ministry of Industry and Information Technology

Level / Type

National · Recommended

Issue date

October 22, 2018

Implementation date

April 1, 2019

Scope

YB/T 4680-2018 is the English-translated version of 金属和合金的腐蚀镀锌薄板无铬钝化评价方法.

YB/T 4680-2018 — This standard specifies the test equipment, test materials, sample preparation, test procedures, test results and test reports for the evaluation of the hexavalent chromium passivation solution and the passivation film formed on the surface of the galvanized sheet.

This standard is applicable to the determination and evaluation of the properties of hexavalent chromium passivation solution and surface passivation film for galvanized sheet.

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Document preview — YB/T 4680-2018

National Standard of the People's Republic of China

ICS: 77.060
Classification: H 25

Issued by: Ministry of Industry and Information Technology

What this standard covers1
Document data2

What this standard covers

This standard specifies the test equipment, test materials, sample preparation, test procedures, test results and test reports for the evaluation of the hexavalent chromium passivation solution and the passivation film formed on the surface of the galvanized sheet. This standard is applicable to the determination and evaluation of the properties of hexavalent chromium passivation solution and surface passivation film for galvanized sheet. This standard does not apply to the determination and evaluation of the performance of silicon steel chromium-free passivation film.

Document data

International classification (ICS): 77.060.

Chinese classification (CCS): H25.

Estimated length of the Chinese original: 10,156 words.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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