Browse Standards J380_197108
Historical REVISED 1971-08-01

Specific Gravity of Friction Material J380_197108

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. Purpose To establish a uniform procedure for determining the specific gravity of brake friction material.
J380_201702
2017-02-02
Latest
Stabilized
J380_200908
2009-08-26
Historical
Reaffirmed
J380_200209
2002-09-17
Historical
Revised
J380_199302
1993-02-01
Historical
Reaffirmed
J380_197108
1971-08-01
Historical
Revised
J380_196902
1969-02-01
Historical
Issued

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