Copper futures settled down on Friday as a stronger American currency makes copper more expensive for buyers using other currencies. Copper prices weakened further by profit booking after recent gains on supply risks following production cut by smelters in China.
Copper futures for May delivery lost $0.0510 to settle at $4.0075 a pound on the Comex metals division of New York Mercantile Exchange. Copper on the London Metal Exchange was down by 0.94 percent at $8,866.50 a ton.