Nucor — Business Overview
What does Nucor do?
Nucor is North America's largest steel manufacturer, turning recycled scrap metal into a wide range of steel products sold primarily to construction and industrial customers. Founded in 1958 and headquartered in Charlotte, North Carolina, the company operates across three reporting segments. It employs approximately 33,000 people, with the vast majority based in the United States.
| Segment | What it does | Share of external sales |
|---|---|---|
| Steel mills | Produces raw and semi-finished steel (sheet, plate, structural beams, bar) using electric arc furnaces | 62% |
| Steel products | Converts steel into finished goods — joists, decking, metal buildings, racking, doors, conduit, rebar fabrication | Not separately broken out |
| Raw materials | Sources and processes scrap steel, produces direct reduced iron (DRI, a high-quality scrap substitute), and brokers metals globally | Not separately broken out |
The company is notable for using scrap steel — rather than mined iron ore — as its primary input, recycling approximately 20 million gross tons of scrap in 2025. This approach, using electric arc furnaces (EAFs) (furnaces that melt scrap with electricity instead of coal-fired blast furnaces), gives Nucor a lower cost structure and a significantly smaller carbon footprint than traditional integrated steelmakers.
How does Nucor make money?
Nucor generates revenue by selling steel and steel-derived products at a price above its cost of production, with scrap steel as its single largest input cost. Scrap and scrap substitutes averaged about $392 per gross ton in 2025, and it takes roughly 1.1 tons of scrap to make one ton of steel. Nucor manages margin volatility by using variable pricing mechanisms that adjust with scrap costs, particularly in its sheet steel business where approximately 85% of sales in 2025 were made under contracts with monthly or quarterly price adjustments.
The steel products segment is a deliberate move up the value chain — selling finished building components rather than raw steel. Products like pre-engineered metal buildings, insulated metal panels, steel racking for warehouses and data centers, and overhead doors carry higher margins and are less commodity-like than raw steel. Nucor has invested roughly $9.73 billion over the past three years, about 9% of which went to acquisitions in this segment, specifically targeting data center infrastructure and high-performance doors.
The raw materials segment largely serves internal needs but also generates some external revenue. In 2025, only about 7% of the ferrous and non-ferrous metals DJJ (Nucor's scrap brokerage arm) brokered and processed were sold externally. The segment's real value is cost control and supply security for the steel mills.
What market does Nucor operate in?
Nucor competes in the U.S. steel market, which is the world's second-largest by consumption and is heavily tied to construction and industrial activity. The company's single largest end market is nonresidential construction — think warehouses, data centers, schools, hospitals, and commercial buildings — followed by durable goods manufacturing and infrastructure. Steel demand rises and falls with broader economic conditions, making it a cyclical industry.
Several secular trends are working in Nucor's favor. Demand for data centers and warehousing infrastructure is growing rapidly and these facilities are steel-intensive. The U.S. energy transition requires steel for solar torque tubes, wind towers, and utility structures — all products Nucor makes. Reshoring of manufacturing to the United States also supports domestic steel demand. On the other hand, the U.S. property and construction market can slow sharply in recessions or when interest rates rise.
Import competition is a structural feature of the industry, and trade policy matters enormously. In 2025, imports supplied about 18% of U.S. steel demand, down 17.4% from 2024, aided by the full reinstatement of Section 232 tariffs (a national security-based import tax on steel) without exemptions. China alone produced over one billion net tons of steel in 2025 — about 53% of global output — and exported a record 131 million net tons, depressing global prices.
Who are Nucor's main competitors?
The U.S. steel industry has two main camps: integrated producers (blast furnace-based) and EAF mini-mills, and Nucor competes against both. Integrated producers like Cleveland-Cliffs and U.S. Steel use blast furnaces and iron ore, which gives them higher fixed costs but historically broader product capabilities. EAF competitors include Steel Dynamics and Commercial Metals Company. Foreign producers, particularly Chinese state-owned mills, also compete indirectly through import pricing pressure.
Nucor claims several competitive advantages. Its EAF process produces roughly one-third the greenhouse gas emissions of blast furnace steelmaking, a growing selling point with sustainability-minded customers. The company holds the leading market position in structural steel, merchant bar, steel joists and deck, pre-engineered metal buildings, cold-finished bar, and electrical conduit. It has the strongest credit rating in North American steel (A-/A-/A3) and carries a debt-to-total-capital ratio of about 24%, giving it financial flexibility that more leveraged competitors lack.
The scrap brokerage and raw materials business is highly fragmented, with many small regional players competing primarily on price and geography. Nucor's DJJ subsidiary is the leading ferrous scrap broker in North America, which provides both a commercial business and a supply chain advantage for its own mills.
Where does Nucor operate?
Nucor's operations are concentrated in the United States, with most mills, fabrication facilities, and customers located domestically. Its approximately 33,000 employees are predominantly U.S.-based. The company has bar mills, sheet mills, structural mills, and plate mills spread across multiple states, with specific facilities in states like Arkansas, South Carolina, Indiana, Alabama, Arizona, North Carolina, and West Virginia (where a major new $4 billion sheet mill is under construction, expected complete by end of 2026).
Nucor has meaningful but secondary operations in Canada and Mexico. The Vulcraft/Verco joist and deck group has two plants in Canada. California Steel Industries (CSI), of which Nucor owns 51%, operates in California. Nucor-JFE Steel Mexico (NJSM), a 51%-owned joint venture with Japan's JFE Steel, runs a galvanized sheet plant in central Mexico serving the automotive market with about 400,000 tons of annual capacity. The cold-finished bar business (Nucor Cold Finish) also has assets in Canada and Mexico.
One notable international manufacturing exposure is Nucor's DRI plant in Trinidad, operated through its Nu-Iron Unlimited subsidiary, which benefits from low-cost natural gas and favorable logistics. This plant supplied a significant portion of the approximately 3.37 million metric tons of DRI delivered to Nucor's U.S. mills in 2025. The filing notes that scrap substitute supply can come from geopolitically sensitive regions — specifically naming Ukraine, Russia, and Brazil — as a risk that Nucor's internal DRI production helps mitigate.