Question 1

What is 391.5 HRB in HV?

Accepted Answer

391.5 HRB = 704.7 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 704.7 HV in HRB?

Accepted Answer

704.7 HV = 391.5 HRB.

HRB	HV
376.5 HRB	677.7
381.5 HRB	686.7
386.5 HRB	695.7
391.5	704.7
396.5 HRB	713.7
401.5 HRB	722.7
406.5 HRB	731.7

391.5 HRB to HV

Formula (approximate)