Rio Tinto Group
Aluminum alloys having improved tensile properties

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Abstract:

The present disclosure provides Al--Si--Mg aluminum alloys comprising a deliberate addition of Mn between 0.05-0.40 weight percent to increase at least one tensile property (such as the yield strength) of an aluminum product comprising such alloy. The Al--Si--Mg alloy comprises, in weight percent, 5-9% Si, 0.35-0.75% Mg, 0.05-0.4% Mn, less than 0.15% Fe, up to 0.15% Ti, 0.005-0.03% Sr and the balance being aluminum and unavoidable impurities, wherein the unavoidable impurities may be present in an amount of up to 0.05% each and up to 0.15% total. The present disclosure provides a foundry ingot comprising the above Al--Si--Mg aluminum alloy, a process for making the above Al--Si--Mg aluminum alloy and an aluminum alloy obtainable by said process.

Status:
Grant
Type:

Utility

Filling date:

10 Mar 2017

Issue date:

14 Dec 2021