AK Steel Holding Corporation, through its subsidiary, AK Steel Corporation, produces flat-rolled carbon, stainless, and electrical steels and tubular products in the United States and internationally. It produces flat-rolled carbon steel products, including coated, cold-rolled, and hot-rolled carbon steel products; specialty stainless and electrical steels in sheet and strip forms; and carbon and stainless steel that is finished into welded steel tubing. The company also buys and sells steel and steel products, and other materials; and produces metallurgical coal from reserves in Pennsylvania. It sells its flat-rolled carbon steel products primarily to automotive manufacturers and to customers in the infrastructure and manufacturing markets, including electrical transmission, heating, ventilation and air conditioning equipment, and appliances; and carbon steel products to distributors, service centers, and converters. The company also sells its stainless steel products to manufacturers and their suppliers in the automotive industry; manufacturers of food handling, chemical processing, pollution control, and medical and health equipment; and distributors and service centers, as well electrical steel products to manufacturers of power transmission and distribution transformers, and electrical motors and generators. AK Steel Holding Corporation was founded in 1993 and is headquartered in West Chester, Ohio.