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Hardness Conversion: HRC
50 to 59
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 | 50 | 139 | 958 | 443 | 50 | 513 | steel |
| HRC | 51 | 144 | 993 | 455 | 51 | 528 | steel |
| HRC | 52 | 150 | 1,034 | 469 | 52 | 544 | steel |
| HRC | 53 | 157 | 1,082 | 481 | 53 | 560 | steel |
| HRC | 54 | 164 | 1,131 | 495 | 54 | 577 | steel |
| HRC | 55 | 168 | 1,158 | 508 | 55 | 595 | steel |
| HRC | 56 | 176 | 1,213 | 525 | 56 | 613 | steel |
| HRC | 57 | 184 | 1,268 | 543 | 57 | 633 | steel |
| HRC | 58 | 191 | 1,317 | 560 | 58 | 653 | steel |
| HRC | 59 | 199 | 1,372 | 577 | 59 | 674 | steel |
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