What are the features of 20CrNi alloy?

20CrNi alloy has high strength, high toughness and good hardenability. After carburizing and quenching, it has the characteristics of high surface hardness and good core toughness. The cold deformation has medium plasticity, good machinability, poor weldability, and preheating before welding. Generally used after carburizing and quenching, it can also be used as quenched and tempered steel.

Chemical composition of 20CrNi alloy

C: 0.17～0.23, Si: 0.17～0.37, Mn: 0.40～0.70, S: ≤0.035, P: ≤0.035, Cr: 0.70～1.00, Ni: 1.00～1.40, Cu: ≤0.030

20CrNi alloy application

20CrNi alloy is generally used as permeable steel to manufacture large and important carburized parts that work under heavy loads, such as gears, keys, shafts, spline shafts, piston pins, etc.; it can also be used as quenched and tempered steel to manufacture high Hardened and tempered parts with impact toughness.