AK Steel Holding Corporationhttps://pcaobus.org/form-ap-filings/351/351AK Steel Holding Corporation3512/22/2017 1:01:52 PM20164113713f-284e-488b-b249-4f40da286d2442Ernst & Young LLP55973AK Steel Holding Corporation918160AKS0004201660Dennis Michael Labate0004201660True