A. M. Castle & Co. serves the aerospace, industrial, and medical manufacturing markets through eight specialized divisions: Banner Commercial, Banner Medical, Banner P&M Supply, Castle Metals Aerospace, Castle Metals Industrial, Edge International, National Kwikmetal Service, and Supra Alloys. With operations supporting customers across North America, Europe, and Asia and Africa, A. M. Castle & Co. delivers precision materials and value-added services to meet the highest standards of performance and reliability for critical industries worldwide.