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User's Guide —
(cont'd)
APPENDIX A - WORKPIECE MATERIAL CONVERSION TABLE
WORKPIECE MATERIALS CONVERSION TABLE (1 of 3)
Material Hardness
AISI/ASTM/
SAE
DIN
WR
(DIN)
JIS BS SS
Low-carbon
Steel
120-170 HB 1020 C22 1.0402
S 20 C;
S 20 CK
S 22 C
055 M 15 1450
Medium-carbon
Steel
160-210 HB 1045 C45 Ck 45
1.0503
1.1191
S 45 C
S 48 C
080 M 46
1672;
1650
High-carbon
Steel
180-230 HB 1060 C60 Ck 60
1.0601
1.1221
S 58 C 060 A 62
1665
1678
Chromium-
molybdenum
Alloy Steel
175-225 HB 4140
41CrMo4
42CrMo4
1.7223
1.7225
SCM 4
SCM 440
SCM 440 (H)
SNB 7
708 M 40 2244
Nickel-
chromium-
molybdenum
Alloy Steel
175-225 HB 4340
40NiCrMo8-4
34CrNiMo6
36CrNiMo4
40NiCrMo6
1.6562
1.6582
1.6511
1.6565
SNB 24-1-5
SNCM 447
SNCM 439
816 M 40;
817 M 40
817 M 37
817 A 37;
818 M 40
2541
Chromium Alloy
Steel
175-225 HB 52100 100Cr6 1.3505 SUJ 2
2 S 135;
535 A 99
2258
3844-UG4088E-E.indd 613844-UG4088E-E.indd 61 11/18/2022 6:50:14 AM11/18/2022 6:50:14 AM
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