AK Steel Announces Price Increases for Stainless Steel Automotive Exhaust Alloys

Middletown, OH, June 06, 2007—AK Steel (NYSE: AKS) said today that it will increase transaction base prices by 10% to 16% for stainless steel alloys used primarily in automotive exhaust applications, effective with shipments on July 1, 2007.

The transaction price will increase by 10%, or $120 per ton, for Type 409, and by 10%, or $180 per ton, for Type 439.   Transaction prices will also increase by 10% for Type 409 Ni, Aluminized 409 and Aluminized 439.  Due to recent increases in the cost of columbium (also known as niobium), transaction base prices for 18 Cr-Cb™, 15 Cr-Cb™ and 410 Cb will increase by approximately 16%.

The company said that all of its existing raw material surcharges will remain in effect.   Surcharges are posted monthly on the company’s web site at www.aksteel.com.

Headquartered in Middletown, Ohio, AK Steel produces flat-rolled carbon, stainless and electrical steel products, as well as carbon and stainless tubular steel products, for automotive, appliance, construction and manufacturing markets.