682.5 Mohs = 6.69 HRC
| Mohs | HRC |
|---|---|
| 667.5 Mohs | 6.54 |
| 672.5 Mohs | 6.59 |
| 677.5 Mohs | 6.64 |
| 682.5 | 6.69 |
| 687.5 Mohs | 6.74 |
| 692.5 Mohs | 6.79 |
| 697.5 Mohs | 6.84 |
682.5 Mohs = 6.69 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