Question 1

What is 354.5 HRB in HV?

Accepted Answer

354.5 HRB = 638.1 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 638.1 HV in HRB?

Accepted Answer

638.1 HV = 354.5 HRB.

HRB	HV
339.5 HRB	611.1
344.5 HRB	620.1
349.5 HRB	629.1
354.5	638.1
359.5 HRB	647.1
364.5 HRB	656.1
369.5 HRB	665.1

354.5 HRB to HV

Formula (approximate)