40Mn4 Steel

Steel name: 40Mn4
Diagram No.: 19
DIN designation: 40Mn4
Mat.No. (Wr.Nr.) designation: 1.1157
Chemical composition in weight %: 0.44% C, 0.29% Si, 1.30% Mn, 0.020% P, 0.025% S, 0.08% Cr, 0.02% Ni, 0.14% Cu
Steel group: Non alloy special steels
Properties: No data
Applications: Crankshafts for vehicle construction and diesel engines, gear shafts.
Reference: Not shown in this demo version.

Heat Treatment
Hardening in water: 820-850oC
Hardening in oil: 820-860oC
Tempering: 480-660oC
Diagram note: No data

Diagram Tempering Temperature - Mechanical Properties

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