Question 1

What is 31 HRB in HV?

Accepted Answer

31 HRB = 55.8 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 55.8 HV in HRB?

Accepted Answer

55.8 HV = 31 HRB.

HRB	HV
25 HRB	45
27 HRB	48.6
29 HRB	52.2
31	55.8
33 HRB	59.4
35 HRB	63
37 HRB	66.6

31 HRB to HV

Formula (approximate)