ZA alloys have existed in various forms, primarily as gravity
casting alloys since 1959. Recent research and development has
refined the chemical composition and adapted this alloy group to
die casting, where they have proven very successful. ZA alloys are
specified by the letters ZA followed by a hyphen and numerals
which indicated the approximate nominal aluminum content. There
are three alloys in this group: ZA-8, ZA-12, and ZA-27.
