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Hardness conversions are empirical relationships defined by conversion tables limited to specific categories of materials. This article is a collection of tables that present approximate Rockwell B hardness conversion numbers for nonaustenitic steels as per ASTM E 140 and approximate equivalent hardness numbers for the Brinell hardness and the Vickers (diamond pyramid) hardness numbers for steel.

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2000. "Hardness Conversions for Steels", Mechanical Testing and Evaluation, Howard Kuhn, Dana Medlin

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