Question 1

What is 55 HRB in HV?

Accepted Answer

55 HRB = 99 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 99 HV in HRB?

Accepted Answer

99 HV = 55 HRB.

HRB	HV
40 HRB	72
45 HRB	81
50 HRB	90
55	99
60 HRB	108
65 HRB	117
70 HRB	126

55 HRB to HV

Formula (approximate)