439.5 Mohs = 4.31 HRC
| Mohs | HRC |
|---|---|
| 424.5 Mohs | 4.16 |
| 429.5 Mohs | 4.21 |
| 434.5 Mohs | 4.26 |
| 439.5 | 4.31 |
| 444.5 Mohs | 4.36 |
| 449.5 Mohs | 4.41 |
| 454.5 Mohs | 4.46 |
439.5 Mohs = 4.31 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