390.5 Mohs = 3.83 HRC
| Mohs | HRC |
|---|---|
| 375.5 Mohs | 3.68 |
| 380.5 Mohs | 3.73 |
| 385.5 Mohs | 3.78 |
| 390.5 | 3.83 |
| 395.5 Mohs | 3.88 |
| 400.5 Mohs | 3.93 |
| 405.5 Mohs | 3.98 |
390.5 Mohs = 3.83 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