252.5 HRB to HV

252.5 HRB = 454.5 HV

HRBHV
237.5 HRB427.5
242.5 HRB436.5
247.5 HRB445.5
252.5454.5
257.5 HRB463.5
262.5 HRB472.5
267.5 HRB481.5

252.5 HRB = 454.5 HV

Formula (approximate)

1 HRC ≈ 10.2 HV · 1 HRB ≈ 1.8 HV · 1 Mohs ≈ 0.1 HV — approximate; real conversions vary by material per ASTM E140