Question 1

What is 272.5 HRB in HV?

Accepted Answer

272.5 HRB = 490.5 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 490.5 HV in HRB?

Accepted Answer

490.5 HV = 272.5 HRB.

HRB	HV
257.5 HRB	463.5
262.5 HRB	472.5
267.5 HRB	481.5
272.5	490.5
277.5 HRB	499.5
282.5 HRB	508.5
287.5 HRB	517.5

272.5 HRB to HV

Formula (approximate)