Chinese steel mill margins have narrowed significantly in the second quarter, falling to $18-25 per metric ton from $35-40/mt in Q1 2026, according to SMM data. The margin compression is the primary reason iron ore prices have been capped below $105/mt despite relatively stable demand.
The margin squeeze reflects a divergence between finished steel prices and raw material costs. Domestic rebar prices in China have fallen 2.8% from Q1 levels to 3,420 CNY/mt, driven by weak property sector demand and ample steel inventory. Meanwhile, iron ore and coking coal prices have remained relatively sticky, supported by seaborne supply dynamics.
The effect is strongest in the property-linked longs sector (rebar, wire rod), where margins have turned negative for some small mills in Hebei province. Flat products (HRC) margins are healthier at $30-35/mt due to stronger manufacturing and export demand.
The margin environment affects iron ore procurement behavior. Chinese mills are increasingly targeting medium-grade (62% Fe) rather than high-grade (65% Fe) material, as higher-grade ore's premium is not justified at current margins. Mills are also increasing the use of domestic low-grade ore and scrap as substitute feedstocks.
The narrowing mill margins are a bearish signal for iron ore prices in the near term. Chinese mills can't absorb higher iron ore costs without cutting output. For iron ore procurement, this means selling into $103-105 rallies is prudent. The medium-term risk is that sustained margin compression forces Chinese mill outages, which would reduce iron ore demand and push prices toward $95.