標準號：SAE J 380-2009
中文標準名稱：摩擦材料的比重
英文標準名稱：Specific Gravity of Friction Material
標準類型：T24
發布日期：2009/8/26 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：T24
國際標準分類號：43.040.40
引用標準：ASTM B 376-1965
適用范圍：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. To establish a uniform procedure for determining the specific gravity of brake friction material.