Steel Dynamics, Inc. operates through four primary business segments: Steel Operations, Metals Recycling, Steel Fabrication, and Aluminum Operations. The company's core steelmaking operations utilize electric arc furnaces and continuous casting technologies to manufacture hot-rolled, cold-rolled, and coated sheet steel, as well as structural beams and rail products. Its metals recycling division, OmniSource, processes and brokers ferrous and nonferrous scrap metal, providing critical feedstock for its own mills. Additionally, the company's fabrication segment produces steel joists and decking for the non-residential building industry. Recently, Steel Dynamics has expanded its footprint into the aluminum market with investments in flat-rolled aluminum production and recycling facilities.
