40Cr machinery manufacturing steel wide application

40Cr steel is one of the widely used steels in machinery manufacturing. After quenching and tempering, it has good comprehensive mechanical properties, good low-temperature impact toughness and low notch sensitivity.
 
After quenching and tempering, 40Cr machinery manufacturing steel is used to manufacture mechanical parts under medium load and medium speed, such as car steering knuckles, rear half shafts and gears, shafts, worms, spline shafts, top sleeves on machine tools, etc. 40Cr steel generally needs to be processed after heat treatment. After the heat treatment process, it has a wide range of uses. Here are a few more common application scenarios:
1. After quenching and tempering at medium temperature, it is used to manufacture parts that bear high load, impact and medium speed work, such as gears, spindles, oil pump rotors, sliders, collars, etc.
2. After quenching and low-temperature tempering, it is used to manufacture parts with heavy load, low impact and wear resistance, and the solid thickness on the section is below 25mm, such as worms, spindles, shafts, collars, etc.
3. After quenching and tempering and high-frequency surface quenching, it is used to manufacture parts with high surface hardness and wear resistance without great impact, such as gears, sleeves, shafts, main shafts, crankshafts, spindles, pins, and connectors. Rods, screws, nuts, intake valves, etc.