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GB/T 391-1977 English PDF

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GB/T 391-1977: Determination of corrosion of engine lubricating oils
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GB/T 391-1977English139 Add to Cart 2 days [Need to translate] Determination of corrosion of engine lubricating oils   GB/T 391-1977

PDF similar to GB/T 391-1977


Standard similar to GB/T 391-1977

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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Older Standard (superseded by this standard) GB 391-1964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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