1.1 This specification covers aluminum-alloy high-strength castings designated as shown in Table 1. 1.2 Castings covered by this specification are intended for use in airframe, missile, and other critical applications wh This specification covers aluminum-alloy high-strength castings. These castings are intended for use in airframe, missile, and other critical applications where high-strength, ductility, and sound castings are required. Castings are classified accordin