42CrMo4 Steel

Steel name: 42CrMo4
Table No.: 1920
DIN designation: 42CrMo4
Mat.No. (Wr.Nr.) designation: 1.7225
AISI/SAE designation: 4140
EN designation: 42CrMo4
UNI designation: 42CrMo4
AFNOR designation: 42CD4
BS designation: 708M40
GOST designation: 38ChM
GOST designation: ML42CrMo
Chemical composition in weight %: 0.38-0.45% C, max. 0.40% Si, 0.60-0.80% Mn, max. 0.025% P, max. 0.035% S, 0.90-1.20% Cr, 0.15-0.30% Mo
Steel group: Alloy steels
Applications: No data
Comment: Ac1=745 C, Ac3=790 C, Ms=335 C, Mf=120 C.
Reference: Not shown in this demo version.

Heat Treatment
Quenching: 860 C/oil, polymer
Tempering: 550-650 C

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