506.5 Mohs = 4.97 HRC
| Mohs | HRC |
|---|---|
| 491.5 Mohs | 4.82 |
| 496.5 Mohs | 4.87 |
| 501.5 Mohs | 4.92 |
| 506.5 | 4.97 |
| 511.5 Mohs | 5.01 |
| 516.5 Mohs | 5.06 |
| 521.5 Mohs | 5.11 |
506.5 Mohs = 4.97 HRC
1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140