American Society for Testing and Materials (ASTM). Current edition approved Feb. 1, 2006. Published February 2006. Originally approved in 1935. Last previous edition approved in 2001 as B 99/B 99M – 01. 3 p. This specification establishes the requirements for round, rectangular, and square wire for general applications other than for electrical transmission cable. The alloys involved are UNS Nos. C65100 and C65500.