Browse Standards J380_199302
Historical REAFFIRMED 1993-02-01

Specific Gravity of Friction Material J380_199302

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.
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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