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Product Code:SAE J380
Title:Specific Gravity of Friction Material
Issuing Committee:Brake Linings Standards Committee
Scope:Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. Specific gravity alone shows nothing about a lining's ability to develop friction or to resist fade when used as a friction element in brakes. Specific gravity varies with the formulation of the lining. The specific gravity of sintered metal powder linings, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376. The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer.

标准名称：	白铜化学分析方法火焰原子吸收分光光度法测定铝量
中标分类：	冶金 >> 金属化学分析方法 >> 重金属极其合金分析方法
替代情况：	被GB/T 5121.13-1996代替
发布日期：	1900-01-01
实施日期：	1988-12-01
首发日期：	1900-01-01
作废日期：	1900-01-01
出版日期：	1900-01-01
页数：	5页

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