October 9, 2008

Reliance Steel & Aluminum Co. Hosts 2008 Third Quarter Conference Call Over the Internet

Reliance Steel & Aluminum Co. (NYSE:RS) announced today that it will host a conference call that will be broadcast live over the Internet regarding the Company's third quarter financial results for the period ended September 30, 2008. All interested parties are invited to listen to the web cast on Thursday, October 16, 2008 at 11:00 a.m. Eastern Time. The earnings release will be made available to the public at 9:00 a.m. Eastern Time that same day. David Hannah, Reliance Steel & Aluminum Co.'s Chairman of the Board and Chief Executive Officer will open the conference call and review the operations along with Gregg Mollins, President and Chief Operating Officer. Karla Lewis, Executive Vice President and Chief Financial Officer, will then review the financial results.

 Reliance Steel & Aluminum Co.'s 2008 Third Quarter Conference Call Live web cast (listen only mode) at: www.rsac.com/investorinformation  DATE:            Thursday, October 16, 2008  TIME:            8:00 a.m. Pacific Time 10:00 a.m. Central Time 11:00 a.m. Eastern Time  WEB SITE:        http://www.rsac.com/investorinformation or http://www.streetevents.com Player format: Windows Media and RealPlayer  CONTACT:         Kim P. Feazle, Investor Relations at (713) 610-9937 

For those of you who are not able to listen to the conference call as it occurs, the web cast will remain posted on the Reliance web site at: www.rsac.com/investorinformation through November 16, 2008 and a printed transcript will be posted on the Reliance web site after the completion of the conference call.

Reliance Steel & Aluminum Co., headquartered in Los Angeles, California, is the largest metals service center company in North America. Through a network of more than 200 locations in 39 states and Belgium, Canada, China, Mexico, Singapore, 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 a broad range of 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 Reports on Form 10-Q for the quarters ended March 31, 2008, June 30, 2008 and September 30, 2008.