American Society for Testing and Materials (ASTM). Current edition approved Jan. 1, 2005. Published January 2005. Originally approved in 1999. Last previous edition approved in 1999 as A 1000 – 99. 5 p. This specification covers a quality of round and shaped plain carbon and alloy steel spring wire, uniform in quality and temper, intended for the manufacture of mechanical springs that can withstand moderate fatigue stresses over some relatively low number of cycles.