What is the composition of 20CrMo alloy steel?

Standard: GB/T 3077-2015

Category: alloy structure steel

chemical composition:

C: 0.17~0.24, Si: 0.17~0.37, Mn: 0.40~0.70, S: ≤0.035, P: 0.035, Cr: 0.80~1.10, Mo: 0.15~0.25, Ni: ≤0.03, Cu: ≤0.03

20CrMo alloy steel has high hardenability, no temper brittleness, good weldability, little tendency to form cold cracks, good machinability and cold strain plasticity. It is generally used in quenched and tempered or carburized and quenched state. 20CrMo alloy steel is used to manufacture high-pressure pipes and various fasteners that work in non-corrosive media and media containing nitrogen and hydrogen mixtures with a working temperature below 250 ℃, and relatively carburized Parts, such as gears, shafts.