✎ Contributed by Ty Griffin
President Donald Trump signed a proclamation revising how Section 232 tariffs on steel, aluminum and copper imports are calculated, creating new tiers that take effect April 6. Under the updated framework, goods made almost entirely of those metals will continue to face a 50% tariff, while certain derivative products “substantially made” of steel, aluminum or copper will be subject to a reduced 25% levy. The administration also outlined carve-outs and special rates for select trading partners and equipment categories.
The revised structure introduces more granular thresholds, including exemptions for products containing 15% or less of the covered metals and differentiated rates for specific industrial equipment. The changes add a new layer of pricing complexity for manufacturers and global suppliers, while raising fresh questions about how higher or tiered import costs could influence domestic producers and mining companies tied to steel, aluminum and copper markets.
Market Reaction
- Freeport-McMoRan Inc. (NYSE: FCX): $60.61, down $0.77 (1.25%)
- Southern Copper Corp. (NYSE: SCCO): $175.53, down $2.31 (1.30%)
- Teck Resources Ltd. (NYSE: TECK): $52.38, down $0.44 (0.83%)
- BHP Group Ltd. (NYSE: BHP): $72.65, down $0.54 (0.74%)
- Rio Tinto plc (NYSE: RIO): $93.72, down $0.77 (0.81%)
Investor Sentiment
Despite the tariff adjustments potentially supporting domestic metal pricing, shares of major copper and diversified miners traded lower. Investors may be weighing whether higher import duties will meaningfully shift global supply-demand balances or instead introduce demand friction in downstream manufacturing sectors.
For copper producers such as Freeport-McMoRan Inc. and Southern Copper Corp., the policy shift could alter short-term trade flows but does not necessarily change underlying global consumption dynamics. Diversified miners including BHP Group Ltd. and Rio Tinto plc remain exposed to broader commodity cycles beyond U.S. tariff policy. Markets appear to be assessing whether the revised framework strengthens domestic pricing power or adds uncertainty to industrial demand forecasts.
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