Aleris to Announce First Quarter 2011 Earnings on May 13, 2011

LIVE AUDIO WEBCAST SCHEDULED FOR 11 A.M. EDT

BEACHWOOD, Ohio, May 9, 2011 - Aleris International, Inc. will announce first quarter 2011 earnings on
Friday, May 13, 2011. The Company will host a conference call that day to
discuss earnings results at 11 a.m. Eastern Daylight Time.

The call can be accessed by dialing 1-877-398-9483 or +1-760-298-5072
(for international callers) — and referencing ID # 66618986 - or through the
Company's website, www.aleris.com. A replay of the call will be
available on the Company's website in the Investor Relations section.

About Aleris

Aleris is a privately-held, global leader in aluminum rolled products and
extrusions, aluminum recycling and specification alloy production.
Headquartered in Beachwood, Ohio, the company operates more than 40
production facilities in North America, Europe and Asia. For more
information, visit www.aleris.com.

(Logo: photos.prnewswire.com/prnh/20050504/CLW056LOGO )

Investors, Sean M. Stack, +1-216-910-3504; Media, Kristen Bihary, +1-216-910-3664