PRODUCTGRADEEQUIVALENT STANDARDCHEMICAL COMPOSITION (%)SUPPLY CONDITIONAPPLICATIONTYPE OF APPLICATION
AISIDINJISCSiMnCrMoNiVWOth.
High Tensile Steel
1.7225

4140

42CrMo4

SCM440H

0.38-0.45

0.10-0.40

0.6-0.9

0.9-1.2

0.15-0.3

P/0.035, S/0.035

Pre-Hardened 28-33 HRCHigh tensile composed of Cr-Mo-Mn suitable for spare parts, machinery parts such as drive shafts, crankshaft, connecting rod, bushing gears
1.6582

4340

34CrNiMo6

SNCM8

0.30-0.38

0.4

0.5-0.8

1.3-1.7

0.15-0.3

1.3-1.7

P/0.035, S/0.030

Pre-Hardened 25-30 HRCLow-alloyed composed of Cr-Mo suitable for spare parts to support high stress, such as drive shaft, crankshaft, connecting rod, bushing gear
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