Rockwell Hardness (page 3 / 4)

C40 to 50
C40 to C50
C40-45
C40-50
C43
C43-C50
C44
C44 to C51
C45
C45 TO C50
C45 to 53
C45 to C53
C45-53
C46
C48 to 51
C50
C52-62
C56
C58 to C62
C60
C60 to C62
D67 Min
D87.5
F65
HB 156
HB 82-92
HB262 max.
HB262 max..
HR15N 83
HR15N 83 Min Surface Hardness
HR15N 84-86
HR30N 63-69.5
HR30N 66-71
HR30N 66-72
HR30N 67.5-72
HR30N 69.5-73
HRB 45
HRB 50 Min
HRB 50 min.
HRB 65/HRC 35
HRB 80
HRB 80 Min
HRB 80 Typical
HRB 80 to 100
HRB 82
HRB 85
HRB 86
HRB 87
HRB 90
HRB 96 - HRC 33
HRB67 to HRB99
HRB69
HRB70
HRB80
HRB80 to HRB100
HRB80 to HRC32
HRB95
HRB95 to HRC32
HRB96 to HRC33
HRC 24/32
HRC 25 to 34
HRC 25-30
HRC 26/34
HRC 26/36
HRC 28 max.
HRC 30-35
HRC 32
HRC 32 to 39
HRC 34 max
HRC 34 max.
HRC 35 Max
HRC 36-42
HRC 37 to 45
HRC 38-45
HRC 39 to 45
HRC 40-47
HRC 40-50
HRC 42-50
HRC 44-51
HRC 45 - HRC 53
HRC 45-53
HRC 46-53
HRC 47-52
HRC 47-54
HRC 48 to 52
HRC 50-58
HRC 58-62
HRC 60 Min (HRC 58-62 at Manufacturer's Discretion)
HRC19
HRC19 to HRC30
HRC22
HRC22 to HRC32
HRC23
HRC23 to HRC34
HRC25
HRC32
HRC32 to HRC39
HRC33
HRC33 to 38
HRC33 to HRC39