381.5 Mohs = 3.74 HRC
| Mohs | HRC |
|---|---|
| 366.5 Mohs | 3.59 |
| 371.5 Mohs | 3.64 |
| 376.5 Mohs | 3.69 |
| 381.5 | 3.74 |
| 386.5 Mohs | 3.79 |
| 391.5 Mohs | 3.84 |
| 396.5 Mohs | 3.89 |
381.5 Mohs = 3.74 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