ASTM A 231/A 231M - 04 Standard Specification for Chromium-Vanadium Alloy Steel Spring Wire

American Society for Testing and Materials (ASTM). Current edition approved Sept. 1, 2004. Published September 2004. Originally approved in 1939. Last previous edition approved in 2002 as A 231/A 231M – 96 (2002). 4 p. This specification covers round chromium-vanadium alloy steel spring wire having properties and quality intended for the manufacture of springs used at moderately elevated temperatures. This wire shall be either in the annealed and cold-drawn or oil-tempered condition as specified by the purchaser.