Both Shanghai and London copper futures edged up on Friday in part as sentiment was buoyed by data that indicated the US economy grew faster than anticipated in the second quarter of this year.

The most-traded copper contract on the Shanghai Futures Exchange (SHFE), for October delivery, closed at 39,390 yuan ($6,164.46) per ton on Friday, up 1.84 percent from Thursday. The October contract climbed 370 yuan for the week.

The benchmark three-month copper contract on the London Metal Exchange (LME) closed at $5,134 a ton on Friday, up from $5,121 a ton on Thursday.

A total of 365,790 lots changed hands on the SHFE on Friday, 332 lots more than on the previous trading day.

The GDP growth in the second quarter in the US was revised up to a 3.7 percent annualized rate against the advanced estimate of 2.3 percent, according to a research note sent to the Global Times on Friday by ANZ Banking Group.

Also, equities rallied around the world following comments by two Federal Reserve officials that prompted investors to push back forecasts for US rate hikes, according to a report by Reuters on Thursday.

"The sentiment out there is still positive and that's keeping copper up today," a Perth-based commodities trader was quoted as saying by Reuters on Thursday. "The fundamentals haven't changed."

Metal prices were stronger. The strong US economic data saw base metals also surge higher. "Concerns over global growth eased with US pending home sales increasing 0.5 percent month-on-month in July," said the research note by ANZ. "Support for aluminum was relatively limited, as concerns over surging supply and exports from China remained high."