American Society for Testing and Materials (ASTM). Current edition approved April 1, 2005. Published April 2005. Originally approved in 1968. Last previous edition approved in 2004 as A 588/A 588M – 04. 3 p. This specification covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction but intended primarily for use in welded bridges and buildings where savings in weight or added durability are important. The atmospheric corrosion resistance of this steel in most environments is substantially better than that of carbon structural steels with or without copper addition (see Note 1).