34CrMo4 Steel

34CrMo4 Steel

Steel name: 34CrMo4
Table No.: 1917
DIN designation: 34CrMo4
Mat.No. (Wr.Nr.) designation: 1.7220
AISI/SAE designation: 4135
EN designation: 34CrMo4
UNI designation: 34CrMo4
AFNOR designation: 34CD4
GB designation: ML30CrMo
GOST designation: 34HM
Chemical composition in weight %: 0.30-0.37% C, max. 0.40% Si, 0.60-0.90% 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
Note: Ac=745 C, Ac3=800 C, Ms=360 C, Mf=150 C.
Reference: Not shown in this demo version.

Heat Treatment
Quenching: 850 C/oil, polymer or water
Tempering: 550-650 C/air

Table Tempering Temperature - Hardness - Mechanical Properties

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Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

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