What is the typical carbon content in steel springs to achieve a high elastic limit?

To achieve a high elastic limit in steel springs, the carbon content typically ranges around 0.50% or more. Carbon plays a crucial role in enhancing the strength and hardness of steel through mechanisms such as solid solution strengthening and by allowing for the formation of carbides, which improve wear resistance. In carbon steels used for springs, a carbon content of around 0.50% is often optimal, as it provides a good balance between elasticity, strength, and ductility required for spring applications. Higher carbon content can lead to increased brittleness, making controlled levels critical to maintaining the desired properties for elastic deformation in springs.