Type 302 stainless steel spring wire is a stainless alloy composed of 18% chromium and 8% nickel. Due to its high corrosion resistance and good tensile strength, it is a common grade for spring manufacturers. 302 is generally furnished in the cold drawn condition for spring applications giving them good strength at moderate temperatures. If properly treated after forming they will set less than most other spring materials at temperatures up to 500ºF. Stainless 302 material in the spring condition is slightly magnetic due to the transformation of some martensite in the drawing operation. The greater the amount of cold reduction the higher the degree of magnetism. Gibbs soap coated Type 302 stainless steel wire is available in the size range 0.001″ to 0.625″. All of our wire conforms to ASTM-A-313 and AMS-5688.
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