Work out tensile strength from hardness instantly with clear inputs, formula shown and shareable results.
Both hardness and tensile strength measure resistance to plastic deformation, so they correlate closely within a material family. For carbon and alloy steels tensile strength in megapascals is about 3.45 times the Brinell number; cast iron uses a lower factor because graphite flakes reduce tensile strength without reducing hardness.
Tensile estimate
UTS MPa = factor x HB
Preliminary estimate only. Hardness-to-strength correlations are indicative; do not substitute them for tensile testing in design or certification.
UTS MPa = factor x HB. Both hardness and tensile strength measure resistance to plastic deformation, so they correlate closely within a material family.
No. It is a screening estimate for sorting or process control. Certification requires an actual tensile test on a specimen taken to the material specification.
This calculator takes 2 inputs: Brinell hardness, Material group. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.