American Society for Testing and Materials (ASTM). Current edition approved Feb. 1, 2006. Published February 2006. Originally approved in 1946. Last previous edition approved in 2004 as B 208 – 04. 11 p. This practice establishes procedures for preparing test coupons and specimens (machined and unmachined) for tension tests of copper alloys for sand, permanent mold, centrifugal and continuous castings.