What is spring steel
Spring is an important mechanical component, its main function is to store energy and reduce vibration. According to the use of the situation and the structure of the different shape, can be divided into plate spring and helical spring two categories, wherein the coil spring can be divided into pressure springs, spring and torsion spring torque springs three kinds. Steel grades used to make springs or to manufacture parts similar to spring performance are collectively known as spring steels.
Typical spring steel
Spring steel is divided into carbon spring steel and alloy spring steel. 65Mn spring steel and carbon spring steel compared to its hardenability slightly higher, decarbonization tendency is small, but easy to overheat and tempered brittle, the elastic limit is lower than si-mn spring steel. SI-MN Spring Steel has the widest range of applications, and 60SI2MN is a representative steel grade. 60SI2MN steel is used for the manufacture of 10-12mm thick plate springs and diameter 20-25mm helical springs, which are widely used in the manufacture of important plate springs and coil springs in automobiles, tractors, and railway vehicles.70SI3MN Steel has a high strength, often used in the manufacture of heavy-duty springs, but 70si3mn steel in the 650-800c has a clear tendency to graphitization, so hot processing is not easy to stay in this temperature range for too long. 65SI2MNW Steel can work under 350C, and the W in steel increases resistance to tempering and heat, and improves hardenability.