Exhibit 21 LIST OF SUBSIDIARIES THE INTERLAKE CORPORATION State or Country Corporate Name Parent Company of Incorporation Apton GmbH Dexion GmbH Germany ARC Metals Corporation Hoeganaes Corporation Delaware Arwood International, Inc. Interlake ARD Corporation New Jersey Chem-tronics, Inc. The Interlake Companies, Inc. California Conco-Tellus Inc. The Interlake Companies, Inc. Delaware Dexion-Aura GmbH Dexion GmbH Germany Dexion (Australia) Pty. Ltd. Interlake DRC Limited New South Wales, Australia Dexion GmbH Dexion Holding GmbH Germany Dexion Group plc Interlake DRC Limited England Dexion Holding GmbH Dexion Group plc Germany Dexion Holdings Limited Dexion Group plc England Dexion (Hungary) Pty. Ltd. Hungary Dexion Incorporated The Interlake Companies, Inc. Delaware Dexion International Limited Dexion Group plc England Dexion Limited Dexion International Limited England Dexion (North Asia) Ltd. The Interlake Companies, Inc. Hong Kong Dexion Produktions GmbH Dexion Holding GmbH Germany Dexion S.A. Dexion Holding GmbH France Dexion (South Africa) Pty. Ltd. Dexion Group plc South Africa Dexion sro Dexion Holding GmbH Czech Dexion Storage Equipment Dexion (North Asia) Limited China (Shanghai) Co. Ltd. Gary Steel Supply Company The Interlake Companies, Inc. Illinois Hoeganaes Corporation The Interlake Companies, Inc.* Delaware Hoeganaes Development, Inc. Hoeganaes Corporation Delaware Interlake ARD Corporation The Interlake Companies, Inc. Delaware Interlake Australian Mining Ventures, Inc. The Interlake Companies, Inc. Ohio Interlake DRC Limited The Interlake Companies, Inc. Delaware Interlake Foreign Sales The Interlake Companies, Inc. Barbados, W.I. Corporation (70%) Hoeganaes Corporation (30%) Interlake de Mexico, S.A. de C.V. The Interlake Companies, Inc. Mexico (99%) Interlake Steel Corporation (1%) Interlake Newco Corporation The Interlake Corporation Delaware Interlake Packaging Corporation The Interlake Companies, Inc. Delaware Interlake Steel Corporation The Interlake Companies, Inc. Arizona Redirack GmbH Dexion GmbH Germany Redirack, Inc. The Interlake Companies, Inc. Delaware Redirack Limited Dexion International Limited England S.A. Dexion-Redirack N.V. Dexion Group plc Belgium The Interlake Companies, Inc. The Interlake Corporation Delaware * 20% of capital stock, all of which is voting common stock, is owned by Hoganas Aktiebolag 2/13/97