271.5 Mohs = 2.66 HRC
| Mohs | HRC |
|---|---|
| 256.5 Mohs | 2.51 |
| 261.5 Mohs | 2.56 |
| 266.5 Mohs | 2.61 |
| 271.5 | 2.66 |
| 276.5 Mohs | 2.71 |
| 281.5 Mohs | 2.76 |
| 286.5 Mohs | 2.81 |
271.5 Mohs = 2.66 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