276.5 HRB to HV

276.5 HRB = 497.7 HV

HRBHV
261.5 HRB470.7
266.5 HRB479.7
271.5 HRB488.7
276.5497.7
281.5 HRB506.7
286.5 HRB515.7
291.5 HRB524.7

276.5 HRB = 497.7 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