The Carbon Border Adjustment Mechanism (CBAM) applies to specific product categories defined by customs codes rather than to mineral ores as a whole. Across mining and metals supply chains, the point at which material is agglomerated, reduced, smelted or fabricated can determine whether an imported product falls within the mechanism’s carbon-accounting requirements.
This distinction separates the extraction of mineral resources from subsequent metallurgical processing and manufacturing. A concentrate produced at a mine may remain outside CBAM, while a processed product derived from the same resource can fall within its scope, depending on its classification.
Iron Ore Pelletisation and Steel Products Fall Within the CBAM Framework
Non-agglomerated iron ore is generally excluded from CBAM, whereas agglomerated iron ores and concentrates classified under CN 2601 12 00 are covered. Pelletisation therefore brings the material within the carbon-accounting framework before it reaches an integrated steel mill.
Further along the iron and steel value chain, pig iron, direct-reduced iron (DRI) and most products classified under Chapter 72 remain covered, subject to specific exclusions. The mechanism consequently extends across several stages of iron processing, from agglomeration to metallic products and steel manufacturing.
Aluminium Coverage Begins at the Smelting Stage
The aluminium supply chain follows a different pattern. Bauxite and imported alumina are outside the current Annex I scope, while unwrought aluminium and a substantial range of semi-fabricated and fabricated aluminium products are covered.
This boundary separates the conversion of bauxite into alumina from the subsequent smelting process that produces aluminium metal. The distinction is relevant to investment assessments because electricity consumption and process emissions are distributed differently between refining and smelting operations.
Copper and Other Strategic Metals Remain Outside the Current Scope
The current CBAM framework does not classify copper concentrates, blister copper or refined copper as covered goods. Consequently, copper smelting can involve substantial carbon emissions and remain strategically important without imported copper products attracting a direct CBAM charge.
A similar coverage gap affects zinc, lead, many nickel products, lithium chemicals, graphite and rare-earth materials. Their exclusion from the mechanism’s current six-sector structure distinguishes their border treatment from that of covered iron, steel and aluminium products.
Ferroalloy Classifications Produce Different Carbon Treatment
Customs classifications also determine how individual ferroalloys are treated. Ferromanganese, ferrochrome and ferronickel remain within the covered Chapter 72 product categories. By contrast, ferro-silicon, ferro-silico-manganese, ferro-silico-chromium, ferro-molybdenum, ferro-tungsten, ferro-vanadium and ferro-niobium are among the explicitly excluded products.
The resulting distinction means alloys produced in furnaces with similar electricity requirements can receive different treatment under the border-carbon mechanism, depending on their product classification.
Customs Codes Shape Commodity Contracts and Project Decisions
For commodity traders, identifying the applicable product code is necessary before incorporating CBAM costs into contract pricing. The carbon treatment of a shipment depends on its classification and processing stage rather than solely on the geological origin of the material.
Lenders assessing projects also need to establish whether the relevant product falls within CBAM before factoring a low-carbon premium into their assumptions. Project developers face the same distinction when deciding whether to export mineral concentrate, an intermediate product or finished metal. These classifications determine where the CBAM boundary intersects the metals value chain, influencing the regulatory treatment of products derived from the same mineral resource.
