Copper futures gained marginally on Friday on improved demand, even as some gains were limited by a firm American currency after Clevland Fed President Loretta Mester said she wants to see a few more months of good inflation data before cutting interest rates.
Copper futures for July delivery gained $0.0135 to settle at $4.4950 a pound on the Comex metals division of New York Mercantile Exchange. Copper on the London Metal Exchange was down by 0.54 percent at $9,741.50 a ton.