Often the tensile spring material have?

Extension spring is often materials mainly include carbon spring steel, the price is cheaper, but the elastic limit is low; Low manganese spring steel, has good strength and hardenability, but after quenching cracks easily; Silicon-manganese spring steel, elastic limit has been improved, also has the very good mechanical properties; Chrome vanadium steel, toughness and strength is good, price is a bit expensive.





tensile spring are generally of pitch, and cross section are mostly round, stretching the spring is not affected by pressure, each circle and there is no gap between each circle, the connection is very compact. Stretching the spring has a very wide range of application scope, in medical treatment, not only breathing apparatus, applied to the mobile equipment, motion control, family care and some equipment are used to, hardware mechanical and electrical protection, actuators, and hand tools and some mechanical, switch devices used to stretch the spring.
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