Question 1

What is 66 HV in HRC?

Accepted Answer

66 HV = 6.47 HRC. Use the converter on this page to convert to other hardness units instantly.

Question 2

How do you convert HV to HRC?

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 HV value by the appropriate factor to get HRC, or use the interactive converter above.

Question 3

What is 6.47 HRC in HV?

Accepted Answer

6.47 HRC = 66 HV.

HV	HRC
51 HV	5
56 HV	5.49
61 HV	5.98
66	6.47
71 HV	6.96
76 HV	7.45
81 HV	7.94

66 HV to HRC

Formula (approximate)