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SJH 1277-1977

SJH 1277-1977_English: PDF (SJH1277-1977)
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SJ 1277-1977English179 Add to Cart 2 days Quality inspection rules for the acceptance of metallic coatings and chemically treated layers SJ 1277-1977 Obsolete SJ 1277-1977

BASIC DATA
Standard ID SJ 1277-1977 (SJ1277-1977)
Description (Translated English) Quality inspection rules for the acceptance of metallic coatings and chemically treated layers
Sector / Industry Electronics Industry Standard
Classification of Chinese Standard L10
Word Count Estimation 3,339
Date of Issue 1978/3/1
Date of Implementation 1978/3/1
Older Standard (superseded by this standard) SJ 43-1964
Regulation (derived from) Industry-Science (2010) No.77
Summary This standard applies to the appearance of the metal plating and chemical treatment layer, the metal coating hardness, with the polarity of the metal coating porosity, adhesion of the coating and substrate metal, metal plating and chemical treatment layer of corrosion, metal plating and chemical treatment layer The thickness of aluminum and aluminum alloys as well as acceptance of electrical insulation properties.