The red metal is red hot.
Copper surged to the highest level in more than two years, lifting shares of producers including Glencore, on expectations that demand in China will fuel a global shortage, with plans in the country to curb metal-rich waste imports reinforcing a bullish outlook.
Benchmark three-month prices rallied as much as 2.8 per cent to $US6400 a tonne, the highest since May 2015. It closed closed up 1.7 per cent at $US6330 for a fourth day of gains, adding to the previous session's 3.3 per cent jump.
"We're getting into rarefied air here, and we'll probably need an oxygen mask to move higher," said Robin Bhar, an analyst at Societe Generale.
Base metals have rallied in the past month as economists have become more upbeat about the trajectory of China's economy, while concerns over tightening liquidity in the world's top user have eased. Initial data for July have added to a positive picture. The world's top metal user is also said to be planning a ban next year on some imports of machinery waste and other products for the purpose of extracting metals scrap, which may reduce supply.
Glencore rose 1.5 per cent and BHP Billiton climbed 1.3 per cent in London. In New York, BHP's US listed shares were up 1.4 per cent ahead of the close.
"The market is very heated," Xu Maili, an analyst at Everbright Futures, said from Shanghai. "There is an outbreak of bullish sentiment following recent good macro data."
The ban, if enforced, may cut scrap imports by as much as 900,000 tonnes a year of contained copper, SMM Information & Technology Co. said in a note on its website, adding that some of the projected impact may be offset by increased local supply. Last year, scrap imports were about 3.3 million tonnes, customs data show.
Nationwide refined-copper consumption was 11.6 million tonnes in 2017, according to the World Bureau of Metal Statistics.
The potential waste move, aimed at cutting pollution, will probably reduce imports of low-grade copper scrap, according to He Xiaohui, an analyst at state-backed researcher Antaike Information Development Co. Still, the eventual impact may be limited as smelters buy higher-grade scrap instead, or improve the grades overseas before importing, He said by phone from Beijing.
The global copper market had a 65,000 tonne deficit in the first five months of this year, according to the World Bureau of Metal Statistics. There's a similar picture from the International Copper Study Group, which estimated the shortfall at 53,000 tonnes in April, paring the year's surplus to just 80,000 tons.
Freeport-McMoRan, the world's biggest publicly traded producer, reckons further gains are likely. Chief executive officer Richard Adkerson said a looming deficit will benefit the company, with prices expected to hit $US4 a pound ($US8818 a tonne) or higher, according to remarks on a conference call.
Aluminum also rallied on the LME amid speculation that China's efforts to curb overcapacity will benefit prices. Futures in London advanced as much as 1.7 per cent to $US1963.50 a tonne, the highest price since May 26 and traded at $US1940.50.
LME nickel fell 0.7 per cent after closing at the highest in three months. On Monday, Philippine President Rodrigo Duterte had threatened to impose more taxes on mining firms unless they take steps to protect the environment, reviving concerns about supply from the world's top producer of mined nickel.