This specification covers an aluminum alloy in the form of extruded bars, rods, wire, profiles, and tubing. These extrusions have been used typically for parts subject to excessive warpage during machining and for parts requiring high strength and whose fabrication does not involve welding or forming, but usage is not limited to such applications. Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking; SAE ARP 823 recommends practices to minimize such conditions.