Al—Mn based aluminum alloy composition combined with a homogenization treatment
AssigneeRio Tinto Alcan International Limited
InventorsNicholas Charles Parson, Alexandre Maltais
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Abstract
An extrudable aluminum alloy billet includes an aluminum alloy composition including, in weight percent, between 0.90 and 1.30 manganese, between 0.05 and 0.25 iron, between 0.05 and 0.25 silicon, between 0.01 and 0.02 titanium, less than 0.01 copper, less than 0.01 nickel, and less than 0.05 magnesium, the aluminum alloy billet being homogenized at a temperature ranging between 550 and 600° C.
Claims16
Aluminum alloy heat exchanger extruded tubes comprising an aluminum alloy composition consisting essentially of, in weight percent, between 0.90 and 1.30 manganese, between 0.05 and 0.25 iron, between 0.05 and 0.25 silicon, between 0.01 and 0.02 titanium, less than 0.01 copper, less than 0.01 nickel, and less than 0.05 magnesium, the aluminum alloy being cast as an ingot and homogenized at a homogenization temperature ranging between 550 and 600° C. before extruding the homogenized ingot into tubes.
Dependencies are inferred from the claim text.