Question 1

What is 121.5 HRB in HV?

Accepted Answer

121.5 HRB = 218.7 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 218.7 HV in HRB?

Accepted Answer

218.7 HV = 121.5 HRB.

HRB	HV
106.5 HRB	191.7
111.5 HRB	200.7
116.5 HRB	209.7
121.5	218.7
126.5 HRB	227.7
131.5 HRB	236.7
136.5 HRB	245.7

121.5 HRB to HV

Formula (approximate)