This category spans bulk minerals (iron ore, coal) and refined metals (copper, aluminum) — commodities with fundamentally different trading characteristics grouped together as core industrial inputs for steelmaking, construction, electronics, and energy. Refined metals (copper, aluminum) trade against globally recognized exchange benchmarks (LME — London Metal Exchange) with tight, standardized specifications, while bulk minerals (iron ore, coal) trade more on negotiated quality-adjusted pricing tied to index publications specific to each mineral.
Grades & Specifications
- **Iron Ore (62% Fe)** — the benchmark iron content grade for globally traded seaborne iron ore; higher-Fe-content ore commands a premium since it requires less processing per ton of steel produced. - **Thermal Coal** — graded by calorific value (energy content per kg), used for power generation. - **Coking Coal** — a distinct grade from thermal coal, specified for its coking properties (ability to form coke for steelmaking), commanding different pricing dynamics tied to steel production rather than power generation. - **Copper Cathode (Grade A)** — the LME-deliverable refined copper standard (99.99% purity), the reference grade for global copper trading. - **Aluminum Ingots (LME Grade)** — similarly, the LME-deliverable standard for primary aluminum, ensuring exchange-grade fungibility across origins. - **Industrial Salt** — graded by purity and intended use (de-icing vs. chemical/industrial feedstock), a much lower-value-per-ton commodity than the metals in this category.
Quality Standards & Inspection
Metals graded to LME specification (copper, aluminum) are the most standardized commodities in this entire list — LME-warranted brands are pre-approved, and quality verification is largely a matter of confirming LME-brand documentation rather than independent lab testing for every shipment. Bulk minerals (iron ore, coal) require assay-based inspection for each cargo — Fe content and impurity levels for iron ore, calorific value and ash/sulfur content for coal — typically via independent surveyors (SGS, Intertek, ALS) sampling during loading.
Main Producing & Exporting Regions
Australia and Brazil dominate global seaborne iron ore exports. Australia is also a major thermal and coking coal exporter, alongside Indonesia (thermal coal) and Central Asia/Russia for various coal grades. South America (Chile in particular) is the largest global source of copper, while aluminum production is more geographically distributed given its dependence on both bauxite/alumina availability and energy-intensive smelting (making energy cost a major driver of where aluminum smelting capacity locates).
Packaging & Logistics
Bulk minerals (iron ore, coal) move exclusively in large bulk carriers (Capesize vessels for the largest iron ore cargoes), reflecting the sheer volumes traded. Refined metals move in standard containers or as break-bulk metal bundles/ingots, since they're processed, unitized products rather than loose bulk material. Because LME-graded metals are fungible exchange-deliverable commodities, buyers have the additional option of sourcing via LME warehouse mechanisms rather than direct producer-to-buyer trade — worth being aware of as an alternative channel alongside direct physical trading.
Key Contract Considerations
For LME-graded metals, the SPA should reference LME brand/warrant requirements directly, since this is what gives the buyer confidence in fungibility and resale value — non-LME-brand material trades at a discount and with more due-diligence burden on the buyer. For bulk minerals, quality-based price adjustment formulas (e.g., a sliding scale premium/discount per percentage point of Fe content above or below the 62% benchmark for iron ore) should be explicit in the contract, since actual cargo assay results rarely match the nominal grade exactly. As with crude oil, higher cargo values in this category warrant the same heightened proof-of-product and counter-party verification discipline.