This is a report issued in 1965 from the American Society for Testing and Materials regarding die-cast metals and alloys. Subjects covered are as follows: Standard specification for aluminum alloy hardeners used in making zinc base die casting alloys; Specification for magnesium base alloys in ingot form for sand castings, die castings, and permanent mold castings; Base alloys in ingot form for sand castings, die castings, and permanent mold castings; Effects of elevated temperatures on the properties of die-cast SC84A aluminum alloy with 1 and 3 per cent zinc; and a summary of these effects.