Question 1

What is 40.5 HRB in HV?

Accepted Answer

40.5 HRB = 72.9 HV. Use the converter on this page to convert to other hardness units instantly.

Question 2

How do you convert HRB to HV?

Accepted Answer

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. Multiply your HRB value by the appropriate factor to get HV, or use the interactive converter above.

Question 3

What is 72.9 HV in HRB?

Accepted Answer

72.9 HV = 40.5 HRB.

HRB	HV
34.5 HRB	62.1
36.5 HRB	65.7
38.5 HRB	69.3
40.5	72.9
42.5 HRB	76.5
44.5 HRB	80.1
46.5 HRB	83.7

40.5 HRB to HV

Formula (approximate)