AK Steel Holding Corporation, through its subsidiaries, produces flat-rolled carbon, stainless, and electrical steels, as well as tubular products in the United States. It manufactures flat-rolled carbon steels, including coated, cold-rolled, and hot-rolled products; and specialty stainless and electrical steels that are sold in slab, hot band, and sheet and strip forms. The company also involves in finishing flat-rolled carbon and stainless steel into welded steel tubing, which is used in the automotive, large truck, and construction markets; and trades in steel and steel products in Europe. It sells flat-rolled carbon steel products primarily to automotive manufacturers; and to customers in the appliance, industrial machinery and equipment, and construction markets consisting of manufacturers of home appliances, and heating, ventilation, and air conditioning equipment. The company also sells its coated, cold rolled, and hot rolled carbon steel products to distributors, service centers, and converters. AK Steel Holding sells its stainless steel products primarily 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. It sells its electrical steels to the manufacturers of power transmission and distribution transformers, and electrical motors and generators. The company also offers its products in Canada, Mexico, and western Europe. AK Steel Holding was founded in 1900 and is headquartered in West Chester, Ohio.