Carpenter Technology Corp. finalized the completion of a formal cooperation agreement with United States Steel Corp. that allows for the development of a new "lightweighting" steel for automotive applications. Carpenter's patented alloy, TEMPER TOUGH™ specialized steel alloy, is designed for use in flat-roll automotive and other demanding applications. Originally designed for the aerospace industry, the new alloy may help automotive manufacturers meet recently mandated Corporate Average Fuel Requirement standards by lightweighting vehicles through mass reduction. U.S. Steel will develop the grade through its operational footprint. TEMPER TOUGH™ specialized steel alloy also offers extraordinarily high-strength and ductility attributes that support ever-increasing safety requirements.