Aluminum alloy products with high resistance to pitting corrosion
AssigneeAlcan International Limited
InventorsPaul William Jeffrey, Nicholas Charles Parson, Thiagarajan Ramanan, Clark Weaver
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Abstract
Aluminum alloy products are described which combine both good strength and resistance to pitting corrosion. They are extruded from an aluminum alloy of the AA1000, AA3000 or AA8000 series containing about 0.001 to 0.3% zinc and about 0.001 to 0.03% titanium. The alloy may also contain 0.001 to 0.5% manganese and about 0.03 to 0.4% silicon. These products are particularly useful in the production of extruded products, such as heat exchanger tubing.
Claims6
An aluminum alloy extruded product consisting essentially of an aluminum alloy of the AA 1000, AA 3000 or AA 8000 series containing about 0.05 to 0.3% zinc and about 0.001 to 0.03% titanium.
An aluminum alloy extrusion, sheet or plate product consisting essentially of an aluminum alloy of the AA 1000, AA 3000 or AA 8000 series containing about 0.001 to 0.5% manganese, about 0.03 to 0.4% silicon, about 0.05 to 0.3% zinc and about 0.001 to 0.03% titanium.
Dependencies are inferred from the claim text.