617.5 Mohs = 6.05 HRC
| Mohs | HRC |
|---|---|
| 602.5 Mohs | 5.91 |
| 607.5 Mohs | 5.96 |
| 612.5 Mohs | 6 |
| 617.5 | 6.05 |
| 622.5 Mohs | 6.1 |
| 627.5 Mohs | 6.15 |
| 632.5 Mohs | 6.2 |
617.5 Mohs = 6.05 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