20MnCr5 Steel

Steel name: 20MnCr5
Table No.: 2083
DIN designation: 20MnCr5
Mat.No. (Wr.Nr.) designation: 1.7147
AISI/SAE designation: 5120
EN designation: 20MnCr5
UNI designation: 20MnCr5
AFNOR designation: 20MC5
GB designation: 20CrMn
GOST designation: 20HG
Chemical composition in weight %: 0.17-0.22% C, max. 0.40% Si, 1.10-1.40% Mn, max. 0.025% P, max. 0.035% S, 1.00-1.30% Cr
Steel group: Alloy steels
Applications: No data
Comment: Ac1=730 C, Ac3=830 C, Ms (core)=390 C, Ms (carburizing surface): 200 C.
Reference: Not shown in this demo version.

Heat Treatment
Core hardening: 860-880 C/oil-polymer, salt bath
Carburizing: 750-930 C
Hardening carburizing surface: 810-840 C/oil, polymer, salt bath
Hardenability test
Quenching: 870 C/water

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