ASTM A 407 - 07 Standard Specification for Steel Wire, Cold-Drawn, for Coiled-Type Springs

American Society for Testing and Materials (ASTM). Current edition approved May 1, 2007. Published June 2007. Originally approved in 1957. Last previous edition approved in 2004 as A 407 – 93 (2004). 3 p. This specification covers round, cold-drawn, steel spring wire having properties and quality intended for the manufacture of upholstery springs.