American Society for Testing and Materials (ASTM). Current edition approved June 1, 2007. Published June 2007. Originally approved in 1977. Last previous edition approved in 2007 as A 751 – 07. 6 p. These test methods, practices, and terminology cover definitions, reference methods, practices, and guides relating to the chemical analysis of steel, stainless steel, and related alloys. It includes both wet chemical and instrumental techniques.