U.S. President Donald Trump’s decision to impose a 50% tariff on imported copper triggered a global buying frenzy among traders earlier this year, prompting accelerated copper shipments to the U.S. However, as the tariff’s effective date approaches, demand is rapidly shrinking, with purchasing activity noticeably slowing from Texas to New Jersey.
Sam Desai, vice president of New Jersey-based RM-Metals, which imports copper from overseas and supplies domestic clients like appliance manufacturers, said U.S. copper prices had already been higher than the global benchmark for much of the year due to tariff expectations. Still, the 50% rate exceeded Desai’s forecasts, forcing his company to drastically cut imports.
This trend reflects how Trump’s copper tariffs are already disrupting industrial supply chains, potentially dampening demand in construction and manufacturing. Though the tariffs take effect on August 1, U.S. factories have long been grappling with higher copper prices. The premium for New York copper futures (the U.S. domestic benchmark) has consistently exceeded London prices, with Comex copper surging 38% this year compared to just a 10% rise on the London Metal Exchange. Given copper’s widespread use in housing, telecommunications, appliances, and electronics, this price disparity carries far-reaching implications.
Currently, U.S. buyers are opting to deplete inventories accumulated earlier this year rather than place new orders with distributors. Roger Deines, purchasing manager at metal supplier Aviva Metals, said the uncertainty has forced his company to halt some transactions. “Are copper alloys, brass, or bronze included in the tariffs? Or only refined copper or cathodes? There’s no clear definition yet. Until policies are clarified, making business decisions is difficult.”
Copper’s superior conductivity makes it essential for power infrastructure and data center construction. Trump’s tariffs aim to strengthen domestic supply chains. While ample inventories provide manufacturers a buffer and buy time for U.S. copper producers, the pace and scale of domestic industry investment remain uncertain. Some experts warn the tariffs could fuel inflation, eventually forcing a policy reversal.
