SAE J 379-2004
制动片的高根硬度
Gogan Hardness of Brake Lining
- 标准号
- SAE J 379-2004
- 发布日期
- 2004年08月16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
- 代替标准
- SAE J 379-2009
- 适用范围
- Hardness measurements are used as a quality control check of the consistency of formulation and processing of brake linings. Gogan hardness is nondestructive (the penetrator causes shallow surface deformation.). Gogan hardness method alone does not show anything about a lining's ability to develop friction or to resist fade when used as a friction element in brakes. The hardness and the range of hardness are peculiar to each formulation, thickness, and contour; therefore, the acceptable values and ranges must be established for each formulation and part configuration by the manufacturer. The hardness of sintered powder metal lining is usually determined with Rockwell Superficial hardness equipment. See ASTM B 347.