Business Context and Reporting Period
Companhia Siderúrgica Nacional (CSN), a Brazilian steel and mining company, filed this Form 6-K in September 2026. The material fact, dated September 29, 2026, reports a temporary reduction in lower-grade iron ore production at the dry-processing plant of the Pires Complex in Ouro Preto, Minas Gerais, operated by subsidiary CSN Mineração.
Key Financial and Operating Metrics
- 2026 production and third-party ore purchase volume guidance: reduced from 45.0–47.0 Mt to 39.0–41.0 Mt.
- 2026 C1 cash cost guidance: increased from US$22.0–23.5 per ton to US$25.0–26.0 per ton.
- The filing does not provide revenue, profit, cash flow, margins, debt, or liquidity figures.
Material Changes Versus Prior Guidance
CSN lowered its combined guidance for production and third-party ore purchases by 6.0 Mt at each end of the range and raised the C1 cash cost range. The company attributed the revisions to reduced production volumes and lower expected purchases of third-party ore in coming months.
Outlook, Commentary, and Risks
The production reduction reflects more challenging market conditions, including higher freight costs that pressure margins for lower-grade ore. CSN says the measure may be reversed if market conditions support stronger margins and will update the market on resumption of activities. Guidance is an estimate, not a performance guarantee, and may change due to market factors beyond the company’s control. The filing also cautions that forward-looking statements are subject to risks and uncertainties.
Important Facts to Verify
- Whether the revised 2026 volume and C1 cash cost guidance is incorporated into the company’s Reference Form.
- How long the temporary reduction at the Pires Complex continues and whether CSN announces a resumption.
- Whether freight costs and market conditions for lower-grade ore improve enough to support stronger margins.
- Any subsequent updates to guidance or reported operating results.