MIL-Z-63472, MILITARY SPECIFICATION: ZINC-ALUMINUM SUPERPLASTIC ALLOYS FOR THERMO FORMING, DEEP DRAWING AND STRETCH FORMING (26 SEP 1980) [NO S/S DOCUMENT]., This specification covers sheet, plate and strip stock Zn-Al superplastic alloys suitable for the production of parts by thermoforming, deep drawing, stretch forming, compression molding and other similar processes.