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YB/T 4680-2018 English PDF
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YB/T 4680-2018
: Corrosion of metals and alloys. Evaluation of chromium-free passivation on the galvanized sheet
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YB/T 4680-2018
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Corrosion of metals and alloys. Evaluation of chromium-free passivation on the galvanized sheet
Valid
YB/T 4680-2018
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Basic data
Standard ID
YB/T 4680-2018 (YB/T4680-2018)
Description (Translated English)
Corrosion of metals and alloys. Evaluation of chromium-free passivation on the galvanized sheet
Sector / Industry
Ferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard
H25
Classification of International Standard
77.060
Word Count Estimation
10,123
Date of Issue
2018-10-22
Date of Implementation
2019-04-01
Regulation (derived from)
Ministry of Industry and Information Technology Announcement No.54 of 2018
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
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.
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