420.5 HRC = 4,289.1 HV
| HRC | HV |
|---|---|
| 405.5 HRC | 4,136.1 |
| 410.5 HRC | 4,187.1 |
| 415.5 HRC | 4,238.1 |
| 420.5 | 4,289.1 |
| 425.5 HRC | 4,340.1 |
| 430.5 HRC | 4,391.1 |
| 435.5 HRC | 4,442.1 |
420.5 HRC = 4,289.1 HV
1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140