Form This specification covers a discontinuously reinforced aluminum alloy (DRA) made by mechanical alloying 2124A aluminum powder and SiC particulate. It is produced in the form of extruded bar@ rod@ wire and shapes with cross section inclusive of 1 inch (25.4 mm) diameter or less. Application These products have been used typically for structural parts requiring high static strength@ fatigue strength and high elastic modulus but usage is not limited to such applications. Subsequent heat treatment to the T6P/T62P temper is required to increase strength to levels required for service (see 3.4 and 3.4.1).