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SAE J380

2017 Edition, February 1, 2017

Complete Document

Specific Gravity of Friction Material

Includes all amendments and changes through Stabilization Notice (No longer revised / updated) , February 2017


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Product Details:

  • Revision: 2017 Edition, February 1, 2017
  • Published Date: February 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 4
  • ANSI Approved: No
  • DoD Adopted: Yes

Description / Abstract:

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.
AIA/NAS Aerospace Standards