520.5 HV = 51.03 HRC
| HV | HRC |
|---|---|
| 505.5 HV | 49.56 |
| 510.5 HV | 50.05 |
| 515.5 HV | 50.54 |
| 520.5 HV | 51.03 |
| 525.5 HV | 51.52 |
| 530.5 HV | 52.01 |
| 535.5 HV | 52.5 |
520.5 HV = 51.03 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