427.5 Mohs = 4.19 HRC
| Mohs | HRC |
|---|---|
| 412.5 Mohs | 4.04 |
| 417.5 Mohs | 4.09 |
| 422.5 Mohs | 4.14 |
| 427.5 | 4.19 |
| 432.5 Mohs | 4.24 |
| 437.5 Mohs | 4.29 |
| 442.5 Mohs | 4.34 |
427.5 Mohs = 4.19 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