617.5 HRB = 1,111.5 HV
| HRB | HV |
|---|---|
| 602.5 HRB | 1,084.5 |
| 607.5 HRB | 1,093.5 |
| 612.5 HRB | 1,102.5 |
| 617.5 | 1,111.5 |
| 622.5 HRB | 1,120.5 |
| 627.5 HRB | 1,129.5 |
| 632.5 HRB | 1,138.5 |
617.5 HRB = 1,111.5 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