stockrowWhat it does
Steel Dynamics is an industrial metals company founded in 1993, with facilities across the United States and Mexico. Mark D. Millett is its co-founder, Chairman and Chief Executive Officer. The company uses a circular manufacturing model: its recycling business collects and processes scrap metal; its electric-arc-furnace steel mills and aluminum operations use that material; and its fabrication businesses turn steel into finished building components.
Its main activities are making and selling steel, processing and selling ferrous and nonferrous scrap, and manufacturing steel joists, joist girders and steel deck systems. Steel products include flat-rolled sheet—hot rolled, cold rolled, galvanized, painted and other coated products—and long products such as structural beams, rail, reinforcing bar, specialty shapes and engineered bar products. It sells these products to manufacturers, processors, service centers, fabricators and construction-related customers.
The recycling platform processes ferrous scrap for steel mills and nonferrous metals including aluminum, copper, brass and stainless steel. The fabrication platform serves non-residential construction with components used in buildings such as warehouses, data centers, schools, retail facilities and manufacturing plants. The aluminum platform makes recycled aluminum flat-rolled coil for beverage cans, automotive, industrial and other applications.
The company had approximately 16 million tons of estimated steelmaking and steel-coating capacity at December 31, 2025, and employed 14,400 people.
How it makes money
Steel Dynamics earns revenue from shipments of steel, recycled metals, fabricated construction components and aluminum products. Sales depend on volumes shipped, product mix and selling prices. It charges premiums for certain steel and aluminum grades, dimensions, smaller volumes, and value-added processing or coating. Steel fabrication revenue is recognized over time as fabricated tons are completed under a contract; other businesses generally recognize sales when products ship or are delivered.
Steel operations are the largest business and represented 72% of 2025 consolidated net sales. They include electric-arc-furnace mills, coating and processing lines, distribution, warehousing and downstream finishing. Flat-rolled sheet steel is sold as hot rolled, cold rolled, galvanized, painted and processed coil. Long-product mills produce structural steel, rail, specialty shapes, reinforcing bar and engineered bars. Approximately 70% of steel and steel-fabrication sales are considered value-added.
Metals recycling processes and resells ferrous and nonferrous scrap, while also providing logistics, marketing, brokerage and scrap-management services. Steel fabrication makes joists, girders and deck systems. Aluminum operations are ramping a recycled flat-rolled mill, slab centers and a deox-rod facility; the company expects its eventual aluminum mix to be approximately 45% can sheet, 35% automotive and 20% common-alloy and industrial applications.
In 2025, consolidated net sales were $18.2 billion; in the third quarter of 2026, revenue was $6.5 billion and operating income was just over $1 billion. Management said on the call that approximately 80% of the flat-rolled portfolio is on contracts whose pricing generally lags market changes by two months.
Customers and how it sells
Steel Dynamics serves industrial and construction supply chains. Its steel customers include end users, steel processors, service centers, fabricators and manufacturers. Sheet-steel customers operate in automotive, appliance, agriculture, construction, heating, ventilation and air conditioning, consumer goods, roofing, siding, pipe and energy-related markets. Long-product customers include service centers, fabricators, distributors, original-equipment manufacturers, railroads and downstream businesses within the company.
The fabrication business sells to non-residential steel fabricators, metal-building companies, contractors, developers, property owners, brokers and government entities. Its plants serve customers throughout the United States. The aluminum business is designed to serve carbon-flat-roll customers that also consume or process aluminum for automotive, appliance, construction and other uses, as well as beverage-can customers.
The company is predominantly domestic. U.S. revenue was $17.0 billion in FY2025, or 93.6% of revenue, while non-U.S. revenue was $1.2 billion, or 6.35%. Its steel facilities and customers extend into Mexico, and the recycling platform operates throughout North America. Export sales represented approximately 4% of 2025 steel-segment net sales and 14% of 2025 metals-recycling net sales.
| Region | Revenue, FY2025 | Share | Change on the year |
|---|---|---|---|
| U.S. | $17.0 billion | 93.6% | 5.89% |
| Non-U.S. | $1.2 billion | 6.35% | −21.2% |
Suppliers and costs
Scrap and scrap substitutes are Steel Dynamics’ largest consolidated cost-of-goods-sold component. Ferrous scrap is the main raw material for its electric-arc furnaces, while aluminum scrap is the principal raw material for its recycled aluminum operations. Steel fabrication uses purchased steel as its largest production cost, historically about two-thirds of manufacturing cost.
The company obtains scrap from industrial manufacturers, fabrication plants and machine shops; scrap dealers, retailers, auto wreckers and demolition firms; and suppliers of nonferrous material. It states that it does not buy a significant amount of scrap metal from one source or a limited group of major sources. Scrap prices depend on demand, material composition and quality, size, weight, location and transportation costs.
Its recycling platform supplies its own mills as well as outside consumers. In 2025, 65% of ferrous scrap shipped by its recycling business went to Steel Dynamics steel mills. Other significant costs include labor and benefits, alloys, zinc, freight, repairs, maintenance, electricity, natural gas, depreciation and steel substrate. The business is capital intensive and requires spending on equipment purchases and maintenance.
- Revenue$18.2B
- Cost of revenue−$15.8B
- Selling, general and administrative−$765.3M
- Other operating costs−$150.9M
- Operating income$1.5B
Competitive position
Steel Dynamics competes with North American and foreign integrated steelmakers, mini-mills and steel processors. Competition in steel is based principally on price, quality and value-added services, while steel also competes in some applications with aluminum, cement, composites, plastics, carbon fiber, glass and wood. Scrap recycling is fragmented and competitive in both buying unprocessed scrap and selling processed scrap; price, location, quality and delivery reliability matter. Aluminum operations compete with North American aluminum flat-rolled producers for customers and for aluminum scrap supply.
Novelis is the only specifically named competitor in the available materials. Management said on the call that Novelis has a Bay Minette facility expected to come online. Steel Dynamics reported that its fabrication business maintains approximately one-third of domestic steel-joist-and-deck bookings, representing approximately 2.1 million tons in 2025.
Our reading: The recycling, steelmaking and aluminum businesses are connected by internal scrap supply and internal demand, which can reduce required scrap inventory and support mill utilization. This is a meaningful operating moat, but scrap remains a globally traded commodity and competitors can buy directly from suppliers.
Our reading: Value-added products, coating and processing capabilities, and downstream fabrication create differentiation beyond commodity steel. The advantage is limited where price is the deciding factor or where customers can substitute other materials.
Our reading: The fabrication footprint and its stated share of joist-and-deck bookings provide distribution reach in domestic non-residential construction, but other North American producers compete on price, service and customer proximity.
| Competitor | Where they compete | Threat (our reading) |
|---|---|---|
| Novelis | North American aluminum flat-rolled products | Medium |
Growth opportunities
Steel Dynamics is expanding higher-value steel processing and coating, non-residential fabrication, recycling capabilities and recycled aluminum flat-rolled production. It added four value-added flat-roll coating lines, two at Sinton and two at an Indiana processing facility; management said on the call that these lines were still increasing utilization. The company also says the Sinton mill is progressing from X65 toward X70-grade product and can produce 84-inch-wide, one-inch coiled plate at approximately X70 grade.
Aluminum is a current investment focus. The company operates a 650,000-metric-ton recycled aluminum flat-rolled mill in Mississippi, has two satellite slab centers planned or operating, and is commissioning finishing lines. Management said on the call that all three cold mills were operational, allowing access to the full 650,000 metric ton annual capability. The company sizes the U.S. aluminum-sheet supply deficit at more than 1.4 million tons and expects the shortfall to widen as demand grows. Management said on the call that it had obtained finished-product qualification at multiple automotive manufacturers for 5182 and 5754 products and was trialing 6000-series material.
In the third quarter of 2026, aluminum operations recorded an operating loss of $26 million after a hot-strip-mill surface-quality issue reduced output. Management said on the call that it changed the coolant, resolved the issue, and expected aluminum volume and profitability to improve in the fourth quarter and through 2027. Fabrication demand also increased: its steel-joist-and-deck backlog was 50.0% higher than a year earlier, while long-product backlogs extended well into 2027.
- $18.4BFY2021
- $22.3BFY2022
- $18.8BFY2023
- $17.5BFY2024
- $18.2BFY2025
Structural risks
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Metals cyclicality: Production, sales and earnings can fluctuate significantly with steel, aluminum, recycling and customer-industry cycles. Slower domestic or global growth and a recession could affect the company, customers and suppliers.
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Steel, scrap and energy pricing: Steel selling prices, scrap availability and scrap-substitute costs can move sharply. The company may be unable to pass higher raw-material costs through to customers. Electricity, natural gas, oil and other energy costs are also volatile.
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Competition and imports: The company faces price and service competition from steel and aluminum producers, scrap processors and alternative materials. Global steelmaking overcapacity, imports and foreign trade conditions can affect domestic markets.
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Aluminum ramp-up: The newer aluminum business is still scaling production, qualifications, yields and product mix. Its performance depends on a core group of significant customers, and new facilities can face construction, start-up, qualification, staffing and demand risks.
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Regulation and permits: Steelmaking, recycling, aluminum and other operations must comply with environmental, climate, waste, water, emissions and workplace-safety requirements. Permit failures, noncompliance or rule changes can lead to fines, capital spending, operating changes, suspensions or facility closures.
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Operations, technology and people: Equipment downtime, cybersecurity threats, data-security failures, labor availability and retention of key personnel can disrupt operations or raise costs.
Bottom line
Our reading
Our reading: Steel Dynamics is a predominantly U.S. metals producer whose earnings combine steelmaking, scrap recycling, downstream fabrication and an aluminum business that is still being ramped. Its vertical links—recycling into mills and mills into fabrication—are central to its effort to sustain utilization and manage raw-material needs. The business remains exposed to cyclical metals pricing, scrap and energy costs, competition, imports and construction demand, while aluminum execution is an additional operating variable.