SAE J 380-2009
摩擦材料的比重

Specific Gravity of Friction Material

SAE J 380-2009 发布历史

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. 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. Specific gravity alone shows nothing about a materials in use performance. The specific gravity of sintered metal powder friction materials, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376. To establish a uniform procedure for determining the specific gravity of brake friction material.

SAE J 380-2009由美国机动车工程师协会 US-SAE 发布于 2009-08-26。

SAE J 380-2009 在中国标准分类中归属于: T24 制动系统，在国际标准分类中归属于: 43.040.40 制动系统。

SAE J 380-2009的历代版本如下：

• 2002年09月01日 SAE J 380-2002
• 2009年08月26日 SAE J 380-2009 摩擦材料的比重

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标准号

SAE J 380-2009

发布日期

2009年08月26日

实施日期

废止日期

无

中国标准分类号

T24

国际标准分类号

43.040.40

发布单位

US-SAE

引用标准

ASTM B 376-1965

被代替标准

SAE J 380-2002

适用范围

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. 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. Specific gravity alone shows nothing about a materials in use performance. The specific gravity of sintered metal powder friction materials, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376. To establish a uniform procedure for determining the specific gravity of brake friction material.