Nucor is North America's largest steel producer, making steel and a wide range of steel products primarily from recycled scrap metal. Nucor's two core businesses are steelmaking and downstream steel products manufacturing, both serving nonresidential construction, infrastructure, and industrial markets. In steelmaking, Nucor produces flat-rolled sheet, structural, plate, and bar steel using electric arc furnaces (EAFs) that melt recycled scrap — giving Nucor a more variable cost structure and lower emissions profile than blast furnace-based integrated producers. Nucor sells steel primarily to service centers, fabricators, and manufacturers across the U.S., Canada, and Mexico. In downstream steel products, Nucor fabricates joists and decking, pre-engineered buildings, insulated metal panels, rebar, tubular products, steel racking and data center infrastructure, overhead doors, and utility towers — selling through independent builder networks and directly to construction contractors. Nucor also processes and brokers scrap metal and produces direct reduced iron, though the vast majority of this output is consumed internally. Nucor's profitability is driven by the spread between steel prices and scrap input costs, product mix (higher-value grades and downstream products carry better margins), and volume utilization. Nucor's growth strategy centers on expanding steelmaking capability — including a new ~3M ton/year sheet mill in West Virginia targeting automotive and construction markets — and building out four downstream platforms in insulated metal panels, steel racking and data center infrastructure, overhead doors, and utility towers, which Nucor argues positions it as a full steel supplier to data center developers and energy infrastructure projects.