Question 1

What is 71.5 HRB in HV?

Accepted Answer

71.5 HRB = 128.7 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 128.7 HV in HRB?

Accepted Answer

128.7 HV = 71.5 HRB.

HRB	HV
56.5 HRB	101.7
61.5 HRB	110.7
66.5 HRB	119.7
71.5	128.7
76.5 HRB	137.7
81.5 HRB	146.7
86.5 HRB	155.7

71.5 HRB to HV

Formula (approximate)