Correlation of Hardness with Tensile Strength for Steels?

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Dmitriy Zhukov

see:

DIN EN ISO 18265:2014-02 (Metallic materials - Conversion of hardness values (ISO 18265:2013); German version EN ISO 18265:2013)

GOST 22761-77 (Metals and alloys. Method of measuring Brinell hardness by static action portable hardness meters)

Approximate correlation: tensile strength (MPa) = 10HB/3

Daniel Martinez Krahmer

For low carbon and low alloy steels the relation between tensile stress and Brinell Hardness is 0,308.