509.5 Mohs = 5 HRC
| Mohs | HRC |
|---|---|
| 494.5 Mohs | 4.85 |
| 499.5 Mohs | 4.9 |
| 504.5 Mohs | 4.95 |
| 509.5 | 5 |
| 514.5 Mohs | 5.04 |
| 519.5 Mohs | 5.09 |
| 524.5 Mohs | 5.14 |
509.5 Mohs = 5 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