Iron ore and steel prices weaken on rising inventories

The market’s tone is being set by supply, not demand. Everbright Futures said Australian exports rose to more than 21 million tons week on week, helping keep ore arrivals plentiful, while Mysteel data showed combined iron ore inventories at major Australian and Brazilian ports climbed 258,000 tons to 11.95 million tons in the week through Sept. 20. That inventory build is overshadowing hopes that Brazilian supply may tighten, and it is leaving buyers with little incentive to chase prices higher.

Chinese steelmakers are not offering much support. Mysteel said average blast furnace pig iron and billet production costs in key Tangshan mills edged higher this week, but losses widened further, with square billet ex-factory prices at 3,010 yuan a ton on Sept. 23. Pig iron output on Sept. 23 recovered only marginally to 2.38 million tons as mills stocked up ahead of holidays, and that boost appears temporary as several blast furnaces enter maintenance and restocking cycles fade.

The result is a market that looks over-supplied at the raw material end and weak at the demand end. Shanghai Metals Market said the fundamentals still point lower, even though longer-dated ore futures are being supported somewhat by expectations that Brazilian exports will slow. Coking coal and coke also fell on the Dalian exchange, underscoring the broad weakness in steelmaking inputs rather than a single-contract move.

For investors, the message is clear: this is a margin story first and a commodity story second. Lower ore and scrap costs can help steelmakers if finished steel prices hold, but that is not what is happening here. In China, rebar and hot-rolled coil futures are soft, and spot demand has not delivered the durable lift mills need to restore pricing power. In the U.S. and Europe, hot-rolled coil prices remain firm relative to China, but the global benchmark is still being dragged by Asia’s supply overhang.

That creates a split outcome for the sector. Miners and raw-material suppliers face near-term pricing pressure if inventories keep climbing, while steelmakers that can hold domestic pricing or run at lower-cost positions may gain share. In the U.S., Nucor and Cleveland-Cliffs have both come off recent highs; Nucor closed at $247.25 on Sept. 25, below its 50-day moving average of $255.54, while Cleveland-Cliffs finished at $12.18, with momentum still subdued after a choppy summer. Those moves suggest investors are already discounting a softer earnings backdrop, even before a full read-through from China’s weaker steel complex.

The better trade here is not to chase a bounce in bulk steel inputs, but to position for the second-order winners: low-cost producers, domestic value-added mills and companies tied to infrastructure and reshoring rather than spot commodity pricing. If inventory growth continues and Chinese mills keep operating under margin pressure, the market will eventually reward balance-sheet strength and pricing discipline over volume.

For now, steel looks set to stay range-bound to lower, with the next catalyst likely coming from either a sharper production cut in China or a more sustained drawdown in port inventories. Until then, the burden of proof is on the bulls.