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Copper Tightness Persists as China Smelter Maintenance Adds to Supply Risk

LME 3-month copper spread touched a USD 220 backwardation on Tuesday.

4 min read
Copper wire rods stacked in a warehouse
Copper wire rods stacked in a warehouse

The supply story

LME 3-month copper spread touched a USD 220 backwardation on Tuesday, the strongest print since November 2024, as a series of smelter maintenance outages in China and Chile tightened the near-term physical balance.

The maintenance schedule

  • Jiangxi Copper: 200,000 tpy capacity offline (April-May)
  • Tongling Nonferrous: 150,000 tpy capacity offline (April)
  • Codelco Chuquicamata: 180,000 tpy offline (May-June)

The combined outage impact is approximately 110,000 tonnes over the April-June window, against an underlying monthly demand of approximately 1.2 million tonnes.

What it means for the price

  • LME 3-month copper: $9,840, +2.4% WoW
  • LME copper spread: backwardation deepens
  • Chinese copper concentrate TC/RC: USD 22 / 2.2 cents (vs USD 80 / 8 cents a year ago)

The supply discipline is real and is being reinforced by the maintenance cycle. — Citi, base metals research

Watch list

  • The Codelco restart timeline (early June expected)
  • China refined copper imports (April data, due May 20)
  • The LME inventory draws (currently at a 12-year low of 51,000 tonnes)

Changpeng Wan

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Changpeng Wan covers Asia tech, semiconductors, and the AI hardware supply chain. He was previously a research analyst at Macquarie covering Greater China tech.