40CrMnTi characteristics and scope of application: It is a well-performing carburized steel with high hardenability. It has a hard and wear-resistant surface and a tough core after carburizing and quenching. It has high low temperature impact toughness and medium weldability. Good machinability after normalizing. It is used to manufacture important parts with high speed, medium or heavy load, impact and friction of 30mm section, such as gears, ring gears, gear shaft crossheads, etc. It is a substitute steel of 38CrMnTi, widely used as a carburizing part. It is used in the automobile and tractor industry for important carburizing parts such as gears. Axis. Ring gear which is subjected to high speed, medium or heavy load and shock and friction. Gear shaft, main shaft of sliding bearing, crosshead, claw clutch, worm, etc.