704.5 Mohs = 6.91 HRC
| Mohs | HRC |
|---|---|
| 689.5 Mohs | 6.76 |
| 694.5 Mohs | 6.81 |
| 699.5 Mohs | 6.86 |
| 704.5 | 6.91 |
| 709.5 Mohs | 6.96 |
| 714.5 Mohs | 7 |
| 719.5 Mohs | 7.05 |
704.5 Mohs = 6.91 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