ALUMINUM ALLOY COMPOSITIONS

1 . An alloy comprising:

a composition that includes:

magnesium (Mg) that is 0 to 5% by weight of the composition;

silicon (Si) that is 0.5 to 4% by weight of the composition;

cobalt (Co) that is 0.2 to 5% by weight of the composition; and

aluminum (Al) that is a balance of the composition.

2 . The alloy of claim 1 , wherein the composition includes:

Mg that is 1 to 5% by weight of the composition;

Si that is 1 to 3% by weight of the composition;

Co that is 0.2 to 1% by weight of the composition.

3 . The alloy of claim 1 , wherein the composition further includes at least one of:

nickel (Ni);

titanium (Ti);

zinc (Zn);

zirconium (Zr); or

manganese (Mn).

4 . The alloy of claim 3 , wherein the composition includes:

Ti that is least 0.05% by weight of the composition;

Zr that is at least 0.05% by weight of the composition; and

Mn that is up to 1% by weight of the composition.

5 . The alloy of claim 3 , wherein composition includes up to 5% by weight of the Ni.

6 . The alloy of claim 5 , wherein the composition includes at least 1% by weight of the Ni.

7 . The alloy of claim 3 , wherein composition includes up to 0.5% by weight of the Ti.

8 . The alloy of claim 7 , wherein the composition includes at least 0.05% by weight of the Ti.

9 . The alloy of claim 3 , wherein composition includes up to 2% by weight of the Zn.

10 . The alloy of claim 9 , wherein the composition includes at least 0.1% by weight of the Zn.

11 . The alloy of claim 3 , wherein composition includes up to 0.5% by weight of the Zr.

12 . The alloy of claim 11 , wherein the composition includes at least 0.05% by weight of the Zr.

13 . The alloy of claim 3 , wherein composition includes up to 1% by weight of the Mn.

14 . The alloy of claim 13 , wherein the composition includes at least 0.2% by weight of the Mn.

15 . The alloy of claim 1 , wherein the balance of the Al of the composition includes up to 0.1% by weight of trace impurities.