Copper futures settled marginally higher on Tuesday on firm demand globally, but a stronger American currency capped further gains in copper prices. Meanwhile, investors awaited the US Federal Reserve's policy meeting decision, outcome of US-China trade talks and the prospect of final details on imminent US tariffs on the industrial metal.
Copper futures for September delivery gained $0.01 to settle at $5.6255 a pound on the Comex metals division of New York Mercantile Exchange. Copper on the London Metal Exchange was up by 0.05 percent at $9,798 a ton.