Question 1

What is 358.5 HRB in HV?

Accepted Answer

358.5 HRB = 645.3 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 645.3 HV in HRB?

Accepted Answer

645.3 HV = 358.5 HRB.

HRB	HV
343.5 HRB	618.3
348.5 HRB	627.3
353.5 HRB	636.3
358.5	645.3
363.5 HRB	654.3
368.5 HRB	663.3
373.5 HRB	672.3

358.5 HRB to HV

Formula (approximate)