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 Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, KnoopHardness, Scleroscope Hardness, and Leeb Hardness1 1. Scope* 1.l Conversion Table 1 presents data in the Rockwell chardness range on the relationship among Brinell hardness,Vickers hardness，Rockwell hardness,Rockwell superficialhardness，Knoop hardness,and Scleroscope hardness of non-austenitic steels including carbon.alloy,and tool steels in theas-forged, annealed, normalized,and quenched and temperedconditions provided that they are homogeneous. 1.2 ConversionTable 2 presents data in the Rockwell Bhardness range on the rclationship among Brincll hardness,Vickers hardness，Rockwell hardness，Rockwell superficialhardness，Knoop hardness,and Scleroscope hardness of non-austenitic steels including carbon,alloy,and tool steels in theas-forged,annealed, normalized,and quenched and temperedconditions provided that they are homogeneous. 1.3 Conversion Table 3 presents data on the relationshipamong Brincll hardness, Vickers hardness,Rockwell hardness,Rockwell superficial hardness，and Knoop hardness of nickeland high-nickel alloys (nickel content over 50 张). Thesehardness conversion relationships are intended to apply par-ticularly to thc following: nickel-aluminum-silicon specimensfinished to commercial mill standards for hardness testing,covering the entire range of these alloys from their annealed totheir heavily cold-worked or age-hardened conditions,includ-ing their intcrmediatc conditions. 1.4 Conversion Table 4 presents data on the relationshipamong Brinell hardness, Vickers hardness. Rockwell hardness,and Rockwell superficial hardness of cartridge brass. 1.5 Conversion Table 5 presents data on the relationshipbetween Brinell hardness and Rockwell B hardness of auste-nitic stainless steel plate in the anncaled condition. E140-12b Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, KnoopHardness, Scleroscope Hardness, and Leeb Hardness