40CrMnTi特性及适用范围：是性能良好的渗碳钢，淬透性较高，经渗碳淬火后具有硬而耐磨的表面与坚韧的心部，具有较高的低温冲击韧性，焊接性中等，正火后可切削性良好。用于制造截面30mm的承受高速、中等或重载荷、冲击及摩擦的重要零件，如齿轮、齿圈、齿轮轴十字头等。是38CrMnTi的代用钢，广泛用作渗碳零件，在汽车.拖拉机工业用于截面在30mm以下，承受高速.中或重负荷以及受冲击.摩擦的重要渗碳零件，如齿轮.轴.齿圈.齿轮轴.滑动轴承的主轴.十字头.爪形离合器.蜗杆等。

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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.