Question 1

What is 12 HRB in HV?

Accepted Answer

12 HRB = 21.6 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 21.6 HV in HRB?

Accepted Answer

21.6 HV = 12 HRB.

HRB	HV
9 HRB	16.2
10 HRB	18
11 HRB	19.8
12	21.6
13 HRB	23.4
14 HRB	25.2
15 HRB	27

12 HRB to HV

Formula (approximate)