151.5 Mohs = 1.49 HRC
| Mohs | HRC |
|---|---|
| 136.5 Mohs | 1.34 |
| 141.5 Mohs | 1.39 |
| 146.5 Mohs | 1.44 |
| 151.5 | 1.49 |
| 156.5 Mohs | 1.53 |
| 161.5 Mohs | 1.58 |
| 166.5 Mohs | 1.63 |
151.5 Mohs = 1.49 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