Gogan Hardness of Brake Lining

Standard:
Reaffirmed:
  • 2009-08-26
 
Publisher:
  • SAE International
Pages:
6
Scope:

Gogan hardness, a nondestructive (a penetrator causes shallow surface deformation) method of measuring compressibility, is used as a quality control check of the consistency of formulation and processing of brake lining. Gogan hardness alone shows nothing about a lining's ability to develop friction or to resist fade when used as a friction element in brakes. Gogan hardness varies with formulation, contour, and thickness of the lining. The Gogan hardness and the range of Gogan hardness are peculiar to each formulation, thickness, and contour and, therefore, the acceptable values or range must be established for each formulation and part configuration by the manufacturer.

History:
Standard Published Revision Status
J379_201702 2017-02-02 Latest Stabilized
2009-08-26 Historical Reaffirmed
2004-08-16 Historical Revised
1996-03-01 Historical Reaffirmed
1972-05-01 Historical Revised
1969-01-01 Historical Issued
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