Aluminum procurement risk is moving upstream. Smelter outages matter, but bauxite and alumina flows are now the next cost variable. Guinea remains a key exporter, and concerns over Hormuz disruption have raised the risk premium for Gulf-based smelters that depend on imported raw materials.
The alumina market is not as tight as primary aluminum. Macquarie estimated a 1.26 million tonne global surplus for 2026, down from 2.54 million tonnes last year. That surplus gives buyers some leverage, but it does not remove logistics risk when shipping routes are disrupted.
The practical procurement issue is cost pass-through. Smelters use 13-15 MWh per tonne of aluminum, so power, alumina, and freight can move faster than the headline LME price. Contracts that only reference LME aluminum may miss the real cost exposure.
Review aluminum contracts for alumina, power, and freight pass-through clauses. For Q3 and Q4, require suppliers to disclose raw-material exposure before renewal.