SAE1075 spring steel
SAE1075 spring steel is used widely in the manufacture of springs, pominently in automotive and industrial suespension applications. It is a high carbon steel with a very high yield strength. This material allows objects made of spring steel to return to their original shape despite significant deflection or twisting.
SAE1075 steel material can be hardened and tempered to suit application as a spring, however some steels exhibit more desirable characteristics for spring applications.