578.5 Mohs = 5.67 HRC
| Mohs | HRC |
|---|---|
| 563.5 Mohs | 5.52 |
| 568.5 Mohs | 5.57 |
| 573.5 Mohs | 5.62 |
| 578.5 | 5.67 |
| 583.5 Mohs | 5.72 |
| 588.5 Mohs | 5.77 |
| 593.5 Mohs | 5.82 |
578.5 Mohs = 5.67 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