Copper is being weighed down by demand concerns, while disappointing inflation data in China indicate a slow economic recovery in the world's largest metal-consuming country, despite some supply problems.

Copper at three months on the London Metal Exchange was down 0.5% to $8,326 per metric ton at 0459 GMT, following a marginal weekly gain. Factory prices in China fell at the fastest rate in seven and a half years in June, while consumer inflation was the lowest since 2021.

Chile, the world's largest copper producer, saw its production fall by 14% in May compared to the previous year. Chinese refined copper production in June was estimated by the Shanghai Metals Market at 917,900 metric tons, exceeding expectations as some smelters extended maintenance

There have been hopes for new stimulus measures from the world's second-largest economy that could support demand for industrial metal.

The most traded August copper deal on the Shanghai Futures Exchange rose 0.2% to 67,850 yuan ($9,378.02) per metric ton.

LME pewter fell 1.9% to $27,800, zinc lost 0.6% to $2,349, lead and aluminum remained unchanged at $2,052.50 and $2,145.50 per ton respectively, while nickel fell 1.1% to $20,580.

SHFE zinc fell 1.2% to 19,910 yuan, lead was little changed at 15,505 yuan, nickel fell 2.4% to 160,950 yuan, tin lost 2.1% to 229,420 yuan, while aluminum rose 0.6% to 17,960 yuan per metric ton.