Form This specification covers discontinuously reinforced aluminum alloy (DRA) metal matrix composites (MMC) made by mechanical alloying of 6061B aluminum powder and SiC particulate@ which is then consolidated by Hot Isostatic Pressing (HIP) into shapes between 12 to 100 in2 (0.008 to 0.065 m2) cross-section inclusive. Tensile property response to heat treatment has been demonstrated on samples of 1 in2 (645 mm2) maximum cross section (see 8.9). Application HIP??ed shapes have been used typically for structural applications requiring high static strength@ fatigue strength and high elastic modulus@ but usage is not limited to such applications. HIP??ed shapes may also be used as input to forging@ rolling and extrusion processes. 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).