20CrMnSi has high strength and toughness, high cold deformation plasticity and good stamping performance, and is suitable for cold drawing, cold rolling and other cold working processes. Good welding performance, low hardenability and high temper brittleness, generally not used for carburizing or other heat treatment. It can also be used after quenching and tempering if necessary, and is suitable for manufacturing high-strength welded structures and parts with high working stress, toughness and thickness.
The chemical composition of 20CrMnSi is as follows: