American Society for Testing and Materials (ASTM). Current edition approved Nov. 1, 2005. Published February 2006. Originally approved in 1958. Last previous edition approved in 2001 as B 327 – 01. 4 p. This specification covers aluminum–base and zinc–base master alloys used to make zinc die-casting alloys. Alloy compositions specified for aluminum–base master alloys (hardeners) are designated as shown in Table
1. Alloy composition specified for the zinc-base master alloy is designated as shown in Table 2.