Alcoa Inc., Pittsburgh, Pa., completed its acquisition of the aluminum extrusion assets of Dooray Air Metal Co. Ltd., in Changwon, Korea. The Changwon facility produces hard alloy aluminum extrusions, rod, bar, extruded shapes and tubing for use primarily in industrial, transportation, defense and aerospace applications. Dooray Air Metal Co. Ltd. will continue to exist as a listed company on the Korea Stock Exchange.