Reliance Steel & Aluminum Co. Declares 2008 Third Quarter Dividend Payment

LOS ANGELES--(Business Wire)--
Reliance Steel & Aluminum Co. (NYSE:RS) announced today that on
July 16, 2008, its Board of Directors declared a regular quarterly
cash dividend of $.10 per share of common stock. The dividend is
payable on September 12, 2008 to shareholders of record August 22,
2008. The Company has paid regular quarterly dividend payments for 48
consecutive years.

On July 17, 2008, Reliance reported record results for the second
quarter ended June 30, 2008. Sales were $2.1 billion, up 10.5% and net
income was $156.6 million, up 27.5% and earnings per diluted share was
$2.12, up 33% compared to the 2007 second quarter.

Reliance Steel & Aluminum Co., headquartered in Los Angeles,
California, is the largest metals service center company in North
America (United States and Canada). Through a network of more than 180
locations in 37 states and Belgium, Canada, China, South Korea and the
United Kingdom, the Company provides value-added metals processing
services and distributes a full line of over 100,000 metal products to
more than 125,000 customers in various industries.

Reliance Steel & Aluminum Co.'s press releases and additional
information are available on the Company's web site at www.rsac.com.
The Company was named to the 2008 "Fortune 500" List, the Fortune 2008
List of "America's Most Admired Companies" the 2008 Forbes "America's
Best Managed Companies" List, and the 2008 Forbes "Platinum 400 List
of America's Best Big Companies."

This release may contain forward-looking statements. Actual
results and events may differ materially as a result of a variety of
factors, many of which are outside of Reliance Steel & Aluminum Co.'s
control. Risk factors and additional information are included in
Reliance Steel & Aluminum Co.'s reports on file with the Securities
and Exchange Commission, including Reliance Steel & Aluminum Co.'s
Annual Report on Form 10-K for the year ended December 31, 2007, and
Quarterly Report on Form 10-Q for the quarter ended March 31, 2008.

Reliance Steel & Aluminum Co.
Kim P. Feazle
Investor Relations
(713) 610-9937
(213) 576-2428
kfeazle@rsac.com
investor@rsac.com

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