Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, KnoopHardness, Scleroscope Hardness, and Leeb Hardness

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Designation: E140-12b Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, KnoopHardness, Scleroscope Hardness, and Leeb Hardness11. 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

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