557.5 HRB = 1,003.5 HV
| HRB | HV |
|---|---|
| 542.5 HRB | 976.5 |
| 547.5 HRB | 985.5 |
| 552.5 HRB | 994.5 |
| 557.5 | 1,003.5 |
| 562.5 HRB | 1,012.5 |
| 567.5 HRB | 1,021.5 |
| 572.5 HRB | 1,030.5 |
557.5 HRB = 1,003.5 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