Nucor is North America's largest steel recycler and manufacturer, operating three core segments: steel mills that produce sheet, plate, structural, and bar steel; steel products that manufacture fabricated components like joists, deck, metal buildings, and racking; and raw materials that supply direct reduced iron, process scrap, and broker metals. The company manufactures steel primarily from recycled scrap using electric arc furnaces, serving a diverse customer base with no single customer exceeding 5% of sales across nonresidential construction, durable goods, automotive, appliance, infrastructure, renewable energy, and data center markets. Nucor generates revenue through variable pricing mechanisms tied to market indices and raw material costs, employing a mix of contract and spot sales depending on product type and market conditions, with contract sales in sheet operations typically spanning six to twelve months.