Aluminum prices rose on Tuesday, while the cost of the raw material alumina hit an all-time high, increasing production costs.

Aluminum at three months on the London Metal Exchange (LME) was up 1.6% to $2,637.5 per metric ton at 16:04 GMT. This increase is supported by a rise in the price of alumina, or aluminum oxide, a form of refined ore used to manufacture primary aluminum. The most traded alumina contract on the Shanghai Stock Exchange (ShFE) hit a record 5,003 yuan on Tuesday before closing up 2.9% to 4,933 yuan. It has gained 18% since the beginning of October.

En ce qui concerne les autres métaux, le zinc rose by 2% to 3,138 dollars per ton. The LME zinc cash premium compared to the three-month price reached $15.74 per ton, in a structure known as backwardation. Zinc, mainly used to prevent steel corrosion, is the only base metal in a backwardation situation, which is usually a sign of short supply in the short term. Copper prices rose by 0.3% to 9,584.5 dollars after stocks in warehouses monitored by the LME fell to their lowest level in 77 days, at 280,100