GB/T 391-1977 English PDF

US$139.00 · In stock
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GB/T 391-1977: Determination of corrosion of engine lubricating oils

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 391-1977	139	Add to Cart	2 days	Determination of corrosion of engine lubricating oils

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Basic data

Standard ID: GB/T 391-1977 (GB/T391-1977)
Description (Translated English): Determination of corrosion of engine lubricating oils
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E34
Classification of International Standard: 75.1
Word Count Estimation: 3,356
Date of Issue: 11/8/1977
Date of Implementation: 1/1/1978
Older Standard (superseded by this standard): GB 391-1964
Summary: This Standard is applicable to determination of the degree of corrosion of the engine lubricating oil; it is the buildup of heat in the lubricant film when the surface of the metal sheet in regular contact with the surrounding oxygen in the air, caused by metal corrosion. In the heat to the metal sheet, in the sample 40 ��, after 50 hours of test, according to the food weight variation of corrosion of the metal pieces to determine the sample; in g/m 3 expressed by non otherwise specified; metallic sheet material lead.

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