Hot Rolled, Cold Drawn Carbon Spring Steel/Alloy Spring Steel

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Spring steel mainly has good elasticity, and because it works under a dynamic load environment, the most important material for manufacturing spring should have high yield strength; Spring is used under the impact, vibration, or long-term cross stress, so spring steel is required to have high tensile strength, high elastic limit, and high fatigue strength. In terms of process, spring steel is required to have certain hardenability, not easy to decarburize, and good surface quality, that is, high-quality carbon structural steel with carbon content WC in the range of 0.6% – 0.9%. In recent years, combined with Chinese resources and according to the requirements of new technologies for automobile and tractor design, a new steel type with boron, niobium, molybdenum, and other elements added to silicon manganese steel has been developed, which has prolonged the service life of the spring and improved the quality of the spring.