Copper Cathodes
Copper cathodes are 99.99% pure electrolytic copper plates, the final product of copper smelting and refining. They are the primary traded form of refined copper, used as feedstock by wire rod mills, brass mills, and foundries. LME Grade A cathodes are the global benchmark.
Copper Cathodes at a Glance
What Moves Copper Cathodes Pricing
Copper cathodes price as LME 3-month copper plus a physical premium (the 'Yangshan premium' for China, 'Rotterdam premium' for Europe, 'CME Comex' for US). The LME-Comex arb opens periodically, pulling cathodes between regions. Demand is dominated by Chinese power-grid construction, EV motor windings, and renewable energy infrastructure. Supply concentration is extreme — Chile, Peru, and the DRC produce most of the world's cathode-grade material. Strikes at Escondida, Chuquicamata, or Las Bambas can move LME by 5% in days.
How Copper Cathodes Cargoes Are Priced and Settled
Standard cathode cargoes are 25 tonnes per container, often shipped as bundled 25-tonne lots. CIF and FOB common, with annual contracts pricing as LME monthly average plus premium and quotational period at buyer's or seller's option. Brand approvals matter — only LME-registered Grade A brands trade at the headline premium. Off-warrant and non-LME-approved brands trade at meaningful discounts.
Copper Cathodes Specifications and Dispute Practice
Grade A cathode (LME spec, 99.99% Cu) is the tradeable standard. Disputes commonly involve oxygen content (pitch and luster), surface oxidation (especially after long warehouse storage), and sulfur. Quality-arbitration LME warehouse rules govern the cure period for off-spec cathodes. Brand discounts can be sticky — a cathode brand that loses LME registration may trade at $50-100/tonne discount for years.
Where Copper Cathodes Comes From and Where It Goes
Top exporters: Chile (Codelco, BHP Escondida, Antofagasta), Peru (Antamina, Cerro Verde), DRC (Glencore, Ivanhoe), Zambia. Top importers: China (refined copper imports run 3-4 Mt/year), South Korea, Taiwan, Japan, Germany, and increasingly the US for grid investment. Concentrate flows separately and prices off TC/RC (treatment and refining charges) — the smelter margin.
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