US-China Copper Supply Chain Battle: Dual Pressures of Tariff Escalation and Industry Concentration
Miles Bennett
Commerce Secretary Howard Lutnick is expected to deliver a copper-tariff assessment to the White House by June 30, recommending new duties of up to 30% on refined copper imports — yet a single foreign producer controls over 50% of global smelting capacity, meaning tariffs can reroute trade but cannot quickly end U.S. dependence on outside refining.
Why has copper suddenly become a strategic resource?
AI servers and their cooling systems, EV batteries, and weapons-guidance electronics all depend heavily on copper.
This means → copper is no longer just an industrial commodity — it is embedded at the core of the U.S.–China strategic competition.
In plain terms = whoever controls copper refining capacity holds a chokepoint over AI, EVs, and defense — all at once.
How high have the tariffs already gone?
Last August, the U.S. imposed a 50% tariff on semi-finished copper and high-value copper derivatives, alongside measures to encourage domestic production.
In his previous assessment, Lutnick recommended a 15% tariff on refined copper imports starting January 2027, rising to 30% one year later.
This means → if the new duties are approved, refined copper imports would face a combined 50% + 30% tariff stack, pushing costs directly onto downstream manufacturers.
Why can't tariffs alone solve the problem?
The White House's February 2025 executive order launching a Section 232 investigation stated the core fact: one foreign producer controls over 50% of global copper smelting capacity and holds four of the world's five largest refining facilities.
In plain terms = the global "tap" for refined copper is essentially in one player's hands. Tariffs can reroute trade flows, but they cannot conjure replacement capacity overnight.
This reflects Washington's structural dilemma: industry concentration is so extreme that policy tools are capped by supply-side structure.
What to watch next?
Lutnick is expected to submit his updated assessment by June 30, which will clarify whether new tariffs on refined copper are formally recommended.
The key question is not the tariff number itself — it is whether the U.S. can build competitive domestic smelting capacity within the tariff-protection window.
This means → if domestic capacity fails to keep pace, tariffs will simply raise copper procurement costs for U.S. manufacturers, ultimately weakening the global competitiveness of America's own AI and EV supply chains.
Content is for reference only, not financial advice.