289.5 Mohs = 2.84 HRC
| Mohs | HRC |
|---|---|
| 274.5 Mohs | 2.69 |
| 279.5 Mohs | 2.74 |
| 284.5 Mohs | 2.79 |
| 289.5 | 2.84 |
| 294.5 Mohs | 2.89 |
| 299.5 Mohs | 2.94 |
| 304.5 Mohs | 2.99 |
289.5 Mohs = 2.84 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