174.5 Mohs = 1.71 HRC
| Mohs | HRC |
|---|---|
| 159.5 Mohs | 1.56 |
| 164.5 Mohs | 1.61 |
| 169.5 Mohs | 1.66 |
| 174.5 | 1.71 |
| 179.5 Mohs | 1.76 |
| 184.5 Mohs | 1.81 |
| 189.5 Mohs | 1.86 |
174.5 Mohs = 1.71 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