508.5 Mohs = 4.99 HRC
| Mohs | HRC |
|---|---|
| 493.5 Mohs | 4.84 |
| 498.5 Mohs | 4.89 |
| 503.5 Mohs | 4.94 |
| 508.5 | 4.99 |
| 513.5 Mohs | 5.03 |
| 518.5 Mohs | 5.08 |
| 523.5 Mohs | 5.13 |
508.5 Mohs = 4.99 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