American Society for Testing and Materials (ASTM). Current edition approved March 1, 2007. Published March 2007. Originally approved in 1949. Last previous edition approved in 2006 as A 6/A 6M – 06. 59 p. This general requirements specification covers a group of common requirements that, unless otherwise specified in the applicable product specification, apply to rolled structural steel bars, plates, shapes, and sheet piling.