Exhibit 21 ---------- Direct and Indirect Subsidiaries of Commonwealth Industries, Inc. Name State of Incorporation ------- ---------------------- C I Holdings, Inc. (1) Delaware Commonwealth Financing Corp. (1) Delaware Commonwealth Aluminum Corporation (2) Delaware Commonwealth Aluminum Sales Corporation (3) Delaware Commonal Corporation (3) Barbados Alflex Corporation (2) Delaware Commonwealth Aluminum Concast, Inc. (4) Ohio ------------------------------------------------------------------- (1) Subsidiary of Commonwealth Industries, Inc. (2) Subsidiary of C I Holdings, Inc. (3) Subsidiary of Commonwealth Aluminum Corporation. (4) Subsidiary of Alflex Corporation.