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Hardness Conversion: HRC
60 to 68
Hardness conversion table — Rockwell B, Rockwell C, Brinell, and Vickers equivalents per ASTM E140 and ASTM A370
| scale | hardness value | approximate tensile ksi | approximate tensile mpa | hb (dimensionless) | hrc | hv (dimensionless) | material class |
|---|---|---|---|---|---|---|---|
| HRC | 60 | 207 | 1,427 | 595 | 60 | 697 | steel |
| HRC | 61 | 215 | 1,481 | 615 | 61 | 720 | steel |
| HRC | 62 | 223 | 1,539 | 634 | 62 | 746 | steel |
| HRC | 63 | — | — | 650 | 63 | 772 | steel |
| HRC | 64 | — | — | 670 | 64 | 800 | steel |
| HRC | 65 | — | — | 688 | 65 | 832 | steel |
| HRC | 66 | — | — | 706 | 66 | 865 | steel |
| HRC | 67 | — | — | 722 | 67 | 900 | steel |
| HRC | 68 | — | — | 739 | 68 | 940 | steel |
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