The aluminum association numbers all aluminum casting alloys with a 3 digit code, i.e. 356, 319, 713. The beginning digit denotes the alloy family. The work horses of the aluminum foundry industry revolve around 356 and 319 which are silicon base alloys with different hardening agents and heat treat abilities.
Alloy Casting standard casting alloy is a blend of 356 and 319 and shows good detail retention and structure integrity. It is used in all cases where a non-specified alloy would be acceptable.
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