Base metals on the London Metal Exchange (LME) have closed higher after a weaker US dollar helped lift their appeal to buyers holding other currencies.
At the close of open-outcry trading in the LME ring on Friday, three-month copper was 0.6 per cent higher on the day at $US7,150 per metric ton.
Aluminium closed 0.2 per cent higher at $US1,745.50 per ton.
"The base metals look to be ending the week on a stronger footing, with firmer equities and a weaker (US) dollar adding to the general strength," said base metals analysts at Standard Bank.
"Turnover still remains pretty disappointing, with tin the only metal to see decent two-way interest."
Tin closed the week 1.8 per cent higher on the day at $US22,975 per ton, having traded at values not seen for nearly two months.
A ban on ore exports out of Indonesia continued to add to the metal's strength by underscoring risks to global tin supply.
