Characteristics of steel grade 34CrMo4

Steel grade 34CrMo4 is an alloy steel intended for quenching and tempering and produced according to the requirements of ISO 683-2 and EN 10083-3.

Classification: Alloy steel.

Products: Semi-finished products, plates, wide strip, forgings, tubes, rolled sections, wire rod, and wire.


Chemical composition of steel 34CrMo4 (heat analysis), %

С Si Mn Mo S P Cr
0.30 - 0.37 ≤0.40 0.60 - 0.90 0.15 - 0.30 ≤0.035 ≤0.025 0.90 - 1.20


Equivalents of steel grade 34CrMo4

USA 4135 / G41350
Japan SCM435
France 42CD4
England 708A37
China 35CrMo



Steel grade 34CrMo4 is used for the manufacture of pinion gears for large locomotives, booster drives, high pressure vessels, and pinions exposed to load and spring force. It can also be used for joining the drilling pipes of 2,000 m deep and fishing gear, as well as for bending dies.



Not used for welded structures.  

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