Hardness Conversion: HRB
Hardness conversion table — Rockwell B, Rockwell C, Brinell, and Vickers equivalents per ASTM E140 and ASTM A370
| scale | hardness value | hb (dimensionless) | hrb (dimensionless) | hv (dimensionless) | material class |
|---|---|---|---|---|---|
| HRB | 61 | 104 | 61 | 104 | steel |
| HRB | 62 | 106 | 62 | 106 | steel |
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