222.5 Mohs = 2.18 HRC
| Mohs | HRC |
|---|---|
| 207.5 Mohs | 2.03 |
| 212.5 Mohs | 2.08 |
| 217.5 Mohs | 2.13 |
| 222.5 | 2.18 |
| 227.5 Mohs | 2.23 |
| 232.5 Mohs | 2.28 |
| 237.5 Mohs | 2.33 |
222.5 Mohs = 2.18 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