Features:
High strength and hardness: Due to the presence of chromium and molybdenum, 42CrMo steel has high strength, hardness and wear resistance.
Good toughness and impact resistance: It can maintain good toughness even in low temperature environment and can withstand large impact loads.
Good hardenability: It is suitable for heat treatment and can obtain uniform hardness and strength.
Excellent fatigue resistance: It is suitable for parts that bear alternating loads.
Corrosion resistance: It has good oxidation resistance and corrosion resistance, and can still maintain a long service life in some harsh environments.
Uses:
Automotive industry: It is mainly used to manufacture key parts of automobiles, such as engine crankshafts, gears, transmission shafts, bolts, connecting rods, etc.
Machinery manufacturing: It is used to make various mechanical parts, such as gears, shafts, sprockets, pistons, pump bodies, etc.
Aerospace: It is used to manufacture aircraft engine parts and structural parts, requiring high strength and high toughness parts.
Oil and gas extraction: It is used to produce high pressure and corrosion resistant parts such as drill pipes and oil well pipes.
Tool manufacturing: It can be used to manufacture some high-strength tools, such as stamping dies, cutting tools, etc.
Heavy machinery: used for mechanical parts in high load and high impact environments, such as heavy gears, bearings, etc.
Machinability:
42CrMo steel has good cutting performance, but because it contains high alloy elements, high hardness and strong wear resistance, better tools and appropriate cutting parameters are required during processing.
Weldability:
Due to the high alloy content of 42CrMo steel, cracks are easily generated during welding. Therefore, it is necessary to use suitable welding materials and control the welding heat input during welding. Preheating and post-heat treatment are usually used to reduce the risk of cracks.
