Comex copper in New York maintained $4.3075 a pound, even as June contract on the Shanghai Futures Exchange climbed 0.4 % to 70,970 yuan ($10,840) a ton.
Global copper market may experience a deficit of 435,000-tons, according to International Copper Study Group.
Zinc on LME maintained $2,360 a ton even as aluminum dropped 0.5% to $2,635 a ton. Nickel climbed 0.2% to $26,150 a ton while lead was little changed at $2,690 a ton. Tin was not traded.