What is the general material of the spring?

Usually, the higher the carbon content of steel, the better the elasticity, so springs are mostly made of high carbon steel. Among them, small springs are generally made of high carbon steel in high-quality carbon structural steel, such as shock-absorbing springs under bicycle seats and springs for clips. Medium and large springs are generally made of high carbon alloy steel. For example, automobile shock-absorbing leaf springs are mostly made of 60Si2Mn and 50CrVA.