302.5 Mohs = 2.97 HRC
| Mohs | HRC |
|---|---|
| 287.5 Mohs | 2.82 |
| 292.5 Mohs | 2.87 |
| 297.5 Mohs | 2.92 |
| 302.5 | 2.97 |
| 307.5 Mohs | 3.01 |
| 312.5 Mohs | 3.06 |
| 317.5 Mohs | 3.11 |
302.5 Mohs = 2.97 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