ASTM标准 ASTM E140-12b Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, KnoopHardness, Scleroscope Hardness, and Leeb Hardness Designation: E140-12b Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hard... 03月29日E140 阅读全文