Steven J. Demetriou

STEVEN J. DEMETRIOU became Chairman and Chief Executive Officer of
Aleris International, Inc., on December 9, 2004, following the merger of
Commonwealth Industries, Inc., and IMCO Recycling Inc. He was appointed
President and Chief Executive Officer of Commonwealth in June 2004 after
serving as a member of that company’s Board of Directors since 2002.
Before joining Commonwealth in 2004, Mr. Demetriou was President and
Chief Executive Officer of Noveon, Inc., a leading global producer of
technologically advanced specialty chemicals for consumer and industrial
applications with annual sales of over $2 billion. Prior to that, from
1999 to 2001 he was Executive Vice President of IMC Global Inc., a major
producer and distributor of crop nutrients and animal feed ingredients
to the domestic and international agricultural communities. He also
served as President of IMC Crop Nutrients. From 1997 to 1999 Mr.
Demetriou held various leadership positions with Cytec Industries Inc.,
including Vice President, global specialty resins and President, Cytec
Asia. From 1981 to 1997 he served in increasingly responsible management
positions with Exxon Corporation. Mr. Demetriou received a BS degree in
Chemical Engineering from Tufts University.