Copper Price Within Sight of All-Time High as Chinese Smelters Hit Record Activity

Why It Matters

Higher smelting activity in China tightens copper supply, supporting prices, while widening regional idleness creates divergent market pressures. The shift in TC/RC margins and export constraints could reshape global copper pricing and investment strategies.

Key Takeaways

• Copper May futures hit $6.11/lb, near all‑time high
• China’s smelter inactivity fell to 3.9%, boosting capacity
• Global inactive capacity dropped to 11.7% in March
• Sulfuric acid price up 74% to $210/t, tightening margins
• North America smelter idleness rose to 32.3%, highest region

Pulse Analysis

Copper’s rally to $6.11 per pound reflects a broader recovery in downstream demand after a buyer’s strike earlier this year. Satellite‑derived smelting indices reveal China’s capacity utilization surged, pushing the global active smelting figure to an unprecedented 10.73 million tonnes. This resurgence not only narrows the supply gap but also reinforces copper’s status as a bellwether for industrial activity, especially in infrastructure‑heavy economies.

At the same time, the cost of sulfuric acid—a key input for copper concentrate processing—has spiked 74% to roughly $210 per tonne. The surge, driven by disruptions linked to the Iran conflict, has forced Chinese smelters to absorb higher acid costs, driving concentrate‑to‑refinery charges (TC/RCs) deep into negative territory. Spot tenders now sit near –$78.50 per tonne, eroding miner margins and prompting renegotiations of long‑term contracts, as evidenced by Antofagasta’s zero‑dollar 2026 benchmark settlement.

Regional disparities add another layer of complexity. While China’s smelters are operating near full capacity, North America’s idle rate climbed to 32.3%, and Asia‑Pacific remains elevated due to outages in Iran and Australia. These gaps could fuel price volatility, especially if Indonesia’s Batu Hijau export permit expires or the DRC’s Kamoa‑Kakula smelter ramps up domestic concentrate consumption. Investors and metal‑focused funds should monitor smelting utilization trends and input‑cost dynamics as leading indicators of copper’s next price move.