345.5 Mohs = 3.39 HRC
| Mohs | HRC |
|---|---|
| 330.5 Mohs | 3.24 |
| 335.5 Mohs | 3.29 |
| 340.5 Mohs | 3.34 |
| 345.5 | 3.39 |
| 350.5 Mohs | 3.44 |
| 355.5 Mohs | 3.49 |
| 360.5 Mohs | 3.53 |
345.5 Mohs = 3.39 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