Typical Hardness

-
120
123 BHN; Rockwell B 70
140
149
150
180
180 min BHN; Rockwell B 90 min
19
190 BHN; 84 HRB
200 min BHN; 95 min HRB
200 min BHN; Rockwell B 95 min
217 BHN; 95 Rc
223 BHN; 97 HRB
32
321
35
40
44 to 47; 409 to 442
48 to 51; 451 to 487
56 to 66
60
65
71
78
79
80
80 HRB
84
90
95
95,000
98 HRB
B34
B71
B78
B80
B86
B90
F90
Not Rated
Rockwell B 79