478.5 Mohs = 4.69 HRC
| Mohs | HRC |
|---|---|
| 463.5 Mohs | 4.54 |
| 468.5 Mohs | 4.59 |
| 473.5 Mohs | 4.64 |
| 478.5 | 4.69 |
| 483.5 Mohs | 4.74 |
| 488.5 Mohs | 4.79 |
| 493.5 Mohs | 4.84 |
478.5 Mohs = 4.69 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