In which fields is 45 Quenched And Tempered Steel mainly used
Jun 19, 2025
45 Quenched And Tempered Steel has good comprehensive mechanical properties, and its strength, toughness and wear resistance are relatively balanced, so it is widely used in many fields:
Machinery manufacturing field: It is often used to manufacture various shaft parts, such as machine tool spindles, automobile transmission shafts, etc. These shafts are subjected to complex loads during work, and the good strength and toughness of 45 Quenched And Tempered Steel can ensure that they will not deform or break during long-term operation. At the same time, it can also be used to manufacture gears. After quenching and tempering, the gears have higher hardness and wear resistance, can withstand larger transmission torque, and reduce the risk of wear and fatigue failure.
Automotive industry: Many automotive parts use 45 quenched and tempered steel, such as the crankshaft and connecting rod of the engine. The crankshaft is subjected to periodic impact loads when the engine is working. The performance of 45 quenched and tempered steel can ensure that it can reliably transmit power and ensure the normal operation of the engine. The connecting rod also needs to have higher strength and toughness to adapt to the complex stress conditions when the engine is running at high speed.
Mold manufacturing: Some small and medium-sized molds with low requirements will use 45 quenched and tempered steel. For example, the mold frame of the plastic mold can use 45 quenched and tempered steel to provide sufficient strength and rigidity to support the overall structure of the mold, ensuring that the mold does not deform during the injection molding process, thereby producing plastic products with qualified dimensional accuracy.
Construction machinery: Structural parts such as the lifting arm of the tower crane and the guide rail frame of the construction elevator often use 45 quenched and tempered steel. These parts are subject to large gravity and alternating loads during work. 45 quenched and tempered steel can meet their requirements for strength and toughness, ensuring the safe and reliable operation of construction machinery.
If you need high-quality 45 Quenched And Tempered Steel, please contact Zhongao for more questions.






