Introduction
60Si2CrA spring steel is a high-grade alloy spring steel with a combination of high hardenability and extensive strength. Introduction of advantages such as higher elasticity and higher tensile strength, combined with its excellent fatigue property, have made it an important material for load-bearing spring applications. Its impressive properties make it a perfect choice for a wide range of industries and applications, from automotive to manufacturing.
Characteristics
The 60Si2CrA spring steel has high hardness and excellent fatigue performance, impact resistance and strong tensile performance. Its surface hardening and tempering state have better comprehensive performance, and its comprehensive mechanical properties are excellent. 60Si2CrA spring steel have good flexibility, suitable for shock absorption, good elasticity and wear resistance.
Because of its excellent metallurgical performance, and able to be used in many different applications, 60Si2CrA spring steel is one of the most popular spring steels in the market. It has a low carbon content of 0.47-0.53%, and its content of silicon, chromium and manganese are 0.17-0.30%, 0.90-1.10% and 0.50-0.80% respectively. This combination of elements imparts the steel with an enhanced wear-resistant property and improves its fatigue performance. It also has a high elastic limit and a high tensile strength, thus enabling it to be applied in a variety of load bearing springs.
Applications
60Si2CrA spring steel is widely used in a variety of applications, including automotive parts, door locks, console armrest springs, pressure switches, bearing springs, railway car springs, counterweight springs and tension springs. 60Si2CrA spring steel is also used to make spiral springs for roller gates, for the springs of lock bolts, and for other locking devices. Its high fatigue limit, corrosion resistance and high-temperature strength further make it suitable for use in aerospace and military applications.
Heat Treatment
60Si2CrA spring steel can be appropriately heat treated by annealing, quenching and tempering to meet specific requirements. After annealing, the steel grain is refined and the hardness is very low. It is then quenched and tempered to the desired hardness value of the spring design. For example, if the spring design needs a hardness level of HRC50, then the heat treatment needs to be quenched in oil and then tempered at around HRC50.
The heat treatment tempers the steel to the desired level of hardness and strength, depending on the application and load requirements. Generally, the rockwell hardness of 60Si2CrA spring steel should be between 35 and 45 HRC for normal applications and between 45 and 55 HRC for heavy-duty applications.
Conclusion
60Si2CrA spring steel is a high grade, alloy spring steel which combines high hardenability and strong tensile strength. Its exceptional properties, such as excellent impact resistance, fatigue and elasticity, make it a popular choice for use in automotive and other industrial applications. 60Si2CrA spring steel can be appropriately heat treated to meet varying levels of hardness and strength.
