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GB/T 391-1977Determination of corrosion of engine lubricating oils (English PDF)

发动机润滑油腐蚀度测定法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 8, 1977

Implementation date

January 1, 1978

Scope

GB/T 391-1977 is the English-translated version of 发动机润滑油腐蚀度测定法.

GB/T 391-1977 — 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.

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Document preview — GB/T 391-1977

National Standard of the People's Republic of China

ICS: 75.1
Classification: E 34
Replacing: GB 391-1964

What this standard covers1
Document data2

What this standard covers

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.

Document data

International classification (ICS): 75.1.

Chinese classification (CCS): E34.

Estimated length of the Chinese original: 3,354 words.

Supersedes the earlier edition GB 391-1964.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 2 pages — is available in the English PDF.

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