American Society for Testing and Materials (ASTM). Current edition approved June 1, 2006. Published June 2006. Originally approved in 1972. Last previous edition approved in 2003 as B 572 - 03. 4 p. This specification covers alloys UNS N06002, UNS N06230, UNS N12160, and UNS R30556 in the form of rod for heat resisting and general-corrosive service.