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CSN supplies steel for cars, buildings, appliances and packaging, mainly to customers in Brazil. Steel is its largest revenue source, followed by mining; together they provide most of its revenue. It makes rolled steel and adds coatings for uses such as corrosion-resistant car panels and tinplate cans. Customers buy directly or through distributors, including its own Prada network.
Its mines do more than supply its steelworks. CSN Mineração processes ore from mines including Casa de Pedra, buys additional ore from other producers and sells most of its ore to outside customers. Most iron ore exports go to Asia, mainly China. The MRS railway links mines, the Presidente Vargas Steelworks and Itaguaí Port, where TECAR handles ore shipments. CSN also sells cement in Brazil, using steelmaking slag in some plants, while its logistics and power businesses serve its own operations and outside customers.
The business depends on Brazilian steel demand and on Chinese steel production and global iron ore prices; ore sales generally use market-price indices. Its steelworks also need imported coal to make coke. Operations require environmental licenses and infrastructure concessions. Presidente Vargas operates under a license tied to agreed upgrades to environmental-control equipment.
The risk section is the longest, dullest part of the filing. This keeps only what can really hurt you: where it hits, how hard, when it plays out.
Every company claims an edge. Each one is checked against hard numbers like margins and returns: which hold, and which line gives way first.
Vale and CSN’s mining business both sell iron ore to steelmakers, so seaborne ore prices and Chinese steel demand affect both. Watch Vale’s iron ore revenue rather than its nickel or copper businesses for a read on CSN’s mining exposure.
Ternium, including Usiminas, competes with CSN for Brazilian industrial buyers of flat steel. Its sales of hot- and cold-rolled steel, coated steel and tinplate are the overlap to watch when assessing competition for CSN’s customers.
ArcelorMittal competes with CSN to sell flat and long steel to automotive, appliance and construction businesses. Its sales to those customer groups provide a closer comparison for CSN’s steel business than its mining results.
Gerdau competes with CSN for Brazilian construction and industrial customers buying hot-rolled flat steel and long steel. Watch its Brazilian hot-rolled coils, heavy plates and long-steel business rather than treating its North American results as a direct comparison.
Rio Tinto’s iron ore business competes with CSN’s mining business to supply steelmakers. Its iron ore earnings are the relevant line to watch alongside CSN’s mining results, which depend on global ore prices and sales volume.
BHP’s Western Australian iron ore operations compete with CSN’s mining business for steelmakers’ purchases. Watch production and costs there: BHP reported record iron ore output in FY2026 and described itself as the lowest-cost major producer, making this the business to follow rather than its copper-led group earnings.
Gerdau S.A. earningsGGB
Gerdau’s report will show demand and pricing for long steel and hot-rolled steel among Brazilian construction and industrial buyers, a direct reference for National Steel’s overlapping sales.
Look at Gerdau’s Brazilian long-steel and hot-rolled sales, prices or margins, not its North American business. Steady sales and margins would indicate support from these buyers and less pressure on National Steel’s overlapping business; weaker sales or margins would point to softer demand or price competition that could squeeze its steel sales.
VALE S.A. earningsVALE
Vale’s iron-ore revenue will reflect the seaborne market and Chinese steel demand, offering a read on the market for National Steel’s mining exports.
Focus on Vale’s iron-ore revenue and compare it with relevant sales volumes or realized prices; its nickel and copper businesses are not the read-through. Stronger revenue and prices would indicate a more favorable market for National Steel’s exports; weaker figures would point to greater pressure on its mining revenue.
Ternium S.A. earningsTX
Ternium’s Brazilian flat-steel sales will show industrial buyers’ demand for hot-rolled, cold-rolled, coated steel and tinplate, where it competes with National Steel.
Look at Ternium’s Brazilian flat-steel volumes and mix, especially hot-rolled, cold-rolled, coated steel and tinplate. Steady volumes and a supportive mix would suggest healthier demand among shared industrial buyers; weaker volumes or a shift toward lower-priced products would point to softer demand or price competition that could squeeze National Steel’s overlapping sales and margins.
Companhia Siderurgica Nacional S.A. (CSN) earningsThis company
National Steel sells both steel and iron ore, and its report will show whether those businesses generate enough profit and cash to support heavy investment and debt payments.
Read steel and mining revenue and gross profit alongside operating cash flow. If revenue and gross profit improve and operating cash flow strengthens, steel orders and iron-ore sales are converting more effectively into usable funds. If revenue rises but gross profit or cash flow weakens, costs or working capital are absorbing the gains, making investment and debt payments more reliant on refinancing.
