Question 1

What is 309.5 HRB in HV?

Accepted Answer

309.5 HRB = 557.1 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 557.1 HV in HRB?

Accepted Answer

557.1 HV = 309.5 HRB.

HRB	HV
294.5 HRB	530.1
299.5 HRB	539.1
304.5 HRB	548.1
309.5	557.1
314.5 HRB	566.1
319.5 HRB	575.1
324.5 HRB	584.1

309.5 HRB to HV

Formula (approximate)