Question 1

What is 2.5 HRB in HV?

Accepted Answer

2.5 HRB = 4.5 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 4.5 HV in HRB?

Accepted Answer

4.5 HV = 2.5 HRB.

HRB	HV
1 HRB	1.8
1.5 HRB	2.7
2 HRB	3.6
2.5	4.5
3 HRB	5.4
3.5 HRB	6.3
4 HRB	7.2

2.5 HRB to HV

Formula (approximate)