131.5 Mohs = 1.29 HRC
| Mohs | HRC |
|---|---|
| 116.5 Mohs | 1.14 |
| 121.5 Mohs | 1.19 |
| 126.5 Mohs | 1.24 |
| 131.5 | 1.29 |
| 136.5 Mohs | 1.34 |
| 141.5 Mohs | 1.39 |
| 146.5 Mohs | 1.44 |
131.5 Mohs = 1.29 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