METALS-Copper, aluminium tumble to six-year lows after China devalues yuan – by Eric Onstad (Reuters U.S. – August 11, 2015)

LONDON, Aug 11 (Reuters) – Copper and aluminium hit six-year lows on Tuesday after China devalued its currency, fuelling worries about a glut of aluminium and boosting the cost of commodities for the world’s top metals consumer.

Zinc spiralled to the weakest in nearly three years as the currency move unleashed a wave of speculative selling across the metals complex on the London Metal Exchange, which has shed about 16 percent so far this year.

It reversed a rally in the previous session as bears got the upper hand again. “It really suggests that these markets are incredibly weak,” said Justin Lennon at Mitsui Bussan Commodities USA in New York.

Three month LME copper closed down 3.5 percent at $5,125 a tonne after sliding to $5,109, the weakest since July 2009.

It more than wiped out the 2.6 percent gains from the previous session. “The devaluation will make commodities more expensive for China to import, so I would imagine that is the main reason for the negative reaction,” said Caroline Bain, senior commodities economist at Capital Economics in London.

The devaluation also makes exports more competitive, which may eventually increase industrial production and demand for metals, Bain added.

“We’re not too worried because ultimately it could be a factor in a pick-up in activity in the second half of the year. It could be positive for commodities in the medium term even if the initial reaction is negative.”

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