621.5 HRB = 1,118.7 HV
| HRB | HV |
|---|---|
| 606.5 HRB | 1,091.7 |
| 611.5 HRB | 1,100.7 |
| 616.5 HRB | 1,109.7 |
| 621.5 | 1,118.7 |
| 626.5 HRB | 1,127.7 |
| 631.5 HRB | 1,136.7 |
| 636.5 HRB | 1,145.7 |
621.5 HRB = 1,118.7 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