Direct Answer
6 SEC filers are classified under the Standard Industrial Classification code that describes the steel mini-mills industry, and their latest annual reports show $65.0 billion of combined revenue and a median operating margin of 4.6%. Investors should still evaluate its revenue model, industry-specific KPIs, valuation framework and the risks that can change the group's economics.
Industry Overview
Steel mini mills melt scrap metal in electric arc furnaces and roll it into bars, rebar, beams and flat products, with lower capital cost and fewer emissions than blast furnaces. Margins depend on the spread between steel prices and scrap and power costs. The first numbers to compare across companies here are shipments, metal margin over scrap and capacity utilization.
Key Industry Metrics
- Shipments: Tons of steel products delivered. Volume follows construction and manufacturing demand, and it responds quickly because mini mills can adjust output.
- Metal margin over scrap: Difference between steel price and scrap cost per ton. It is the key spread for electric arc furnaces, and it can change fast with scrap markets.
- Capacity utilization: Share of furnace and rolling capacity running. Mini mills can ramp quickly, so utilization shows near-term demand and pricing.
- Cost of power and alloys: Electricity and alloy additions per ton. Power is a large variable cost, so price spikes or contract terms affect margins.
- Value-added product share: Part of sales in higher-margin items such as coated or specialty products. A higher share lowers exposure to commodity price swings.
Primary Macro Drivers
- Construction and manufacturing demand: Rebar, beams and flat products go into buildings and machinery, so activity sets shipments and utilization.
- Scrap and electricity prices: Scrap and power are the main costs, so their prices set the metal margin over scrap.
- Import levels: Foreign steel competes directly, so import volumes influence pricing and capacity utilization.
- Infrastructure spending: Public projects use large amounts of rebar and structural steel, which adds shipments and stabilizes demand.
Major Risks
- Price cycles: Steel prices fall in downturns and margins narrow with them; watch metal margin over scrap and shipments.
- Scrap cost spikes: When scrap rises faster than steel prices, the margin shrinks; watch scrap prices against product prices.
- Imports: Large inflows of foreign steel can push domestic prices down; watch import data and trade cases.
- Energy cost volatility: Electric furnaces draw heavy power, so price swings or supply limits raise cost per ton; watch power contracts and cost of power and alloys.
Industry Characteristics
| Characteristic | Profile |
|---|---|
| Cyclicality | Cyclical |
| Capital Intensity | High |
| Regulatory Intensity | Medium |
| Industry Maturity | Mature |
| Geographic Importance | U.S. |
Steel Mini-Mills Filers in the SEC Record
6 companies with annual reports in the dataset are classified by the SEC in the Standard Industrial Classification code 3312. Their latest fiscal years end in 2025, and together they reported $65.0 billion of revenue. Median revenue growth over the prior year was 1.3%. Median operating margin was 4.6% and median net margin 3.2%. Median total liabilities were 46% of total assets, and 4 of 6 reported a profit in their latest year.
| Company | Revenue | Growth | Operating margin | Net margin | Year |
|---|---|---|---|---|---|
| Nucor Corp | $32.5 billion | 5.7% | n/a | 5.4% | FY 2025 |
| Steel Dynamics Inc | $18.2 billion | 3.6% | 8.1% | 6.5% | FY 2025 |
| Commercial Metals Co | $7.8 billion | -1.6% | n/a | 1.1% | FY 2025 |
| Carpenter Technology Corp | $2.9 billion | 4.3% | 18.1% | 13.1% | FY 2025 |
| Suncoke Energy, Inc. | $1.8 billion | -5.1% | -2.4% | -2.4% | FY 2025 |
| Titan International Inc | $1.8 billion | -0.9% | 1.1% | -3.3% | FY 2025 |
Source: each company's own annual report as filed with the SEC (XBRL data), figures in U.S. dollars. A company's SIC code reflects its main business as the SEC records it, so it can differ from how an index provider or analyst classifies the company, and a diversified group appears under only one code.
Where to Go Next
The Steel Mini-Mills guide describes how the industry earns money, what to measure and what can go wrong. To see how it compares, read the neighbouring industries in the same sector, then apply the same checks to a specific company.
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Frequently Asked Questions
What are the main KPIs for the Steel Mini-Mills industry?
Key performance indicators for the Steel Mini-Mills industry include: Shipments, Metal margin over scrap, Capacity utilization, Cost of power and alloys, Value-added product share. Which matter most depends on the company's model, so compare them across several companies rather than relying on one.
How cyclical is the Steel Mini-Mills industry?
The Steel Mini-Mills industry is cyclical, meaning its revenues and earnings tend to expand during economic expansions and contract during downturns. Investors should monitor leading economic indicators and interest rate trends when evaluating timing.
What are the biggest risks in the Steel Mini-Mills industry?
The primary risks for Steel Mini-Mills companies include: Price cycles, Scrap cost spikes, Imports, Energy cost volatility. Investors should assess each company's exposure to these factors and its track record of navigating them.