This is a report issued in 1965 from the American Society for Testing and Materials regarding light metals and alloys, cast and wrought. Subjects covered are as follows: Proposed recommendations affecting standards on light metals and alloys, cast and wrought; Aluminum-alloy extruded structural pipe and tube; Magnesium alloys in ingot form for sand castings, permanent mold castings, and die castings; and, Magnesium-alloy extruded bars, shapes, and tubes.