ASTM A401/A401M-18

1.1 This specification covers round and shaped chromium-silicon alloy steel spring wire having properties and quality intended for the manufacture of springs resistant to set when used at moderately elevated temperatures. This product is not meant to be used for non-static applications involving moderate fatigue stresses (see Specification A1000/A1000M) or high cycle fatigue applications (see Specification A877/A877M). This wire shall be provided either in the annealed and cold-drawn or quench and tempered condition as specified by the purchaser.