6XXX ALUMINUM ALLOYS

1 . A 6xxx aluminum alloy comprising:

0.65-0.85 wt. % Si;

0.40-0.59 wt. % Mg;

wherein (wt. % Mg)/(wt. % Si) is from 0.47 to 0.90;

0.05-0.35 wt. % Fe;

0.04-0.13 wt. % Mn;

0-0.20 wt. % Cu;

0-0.15 wt. % Cr;

0-0.15 wt. % Zr;

0-0.15 wt. % Ti;

0-0.10 wt. % Zn;

0-0.05 wt. % V;

the balance being aluminum and impurities.

2 . The 6xxx aluminum alloy of claim 1 , wherein the 6xxx aluminum alloy includes at least 0.675 wt. % Si, or at least 0.70 wt. % Si.

3 . The 6xxx aluminum alloy of claim 1 , wherein the 6xxx aluminum alloy includes not greater than 0.825 wt. % Si, or not greater than 0.80 wt. % Si.

4 . The 6xxx aluminum alloy of claim 1 , wherein the 6xxx aluminum alloy includes at least 0.425 wt. % Mg, or at least 0.45 wt. % Mg, 0.475 wt. % Mg, or at least 0.50 wt. % Mg.

5 . The 6xxx aluminum alloy of claim 1 , wherein the 6xxx aluminum alloy includes not greater than 0.57 wt. % Mg.

6 . The 6xxx aluminum alloy of claim 1 , wherein the (wt. % Mg)/(wt. % Si) is at least 0.50, or at least 0.52, or at least 0.54, or at least 0.56, or at least 0.58, or at least 0.60.

7 . The 6xxx aluminum alloy of claim 1 , wherein the (wt. % Mg)/(wt. % Si) is not greater than 0.88, or not greater than 0.86, or not greater than 0.84, or not greater than 0.82.

8 . The 6xxx aluminum alloy sheet of claim 1 , wherein:

the 6xxx aluminum alloy sheet product has a thickness of from 1.5 to 4.0 mm;

the 6xxx aluminum alloy sheet product has a predominately recrystallized microstructure;

the 6xxx aluminum alloy sheet product realizes a weighted average grain size of from 5 to 45 micrometers; and

the 6xxx aluminum alloy sheet product comprises at least 10% Cube texture.

9 . A 6xxx aluminum alloy comprising:

0.70-0.80 wt. % Si;

0.49-0.59 wt. % Mg;

wherein (wt. % Mg)/(wt. % Si) is from 0.61 to 0.84;

0.09-0.29 wt. % Fe;

0.06-0.10 wt. % Mn;

0.09-0.17 wt. % Cu;

0.01-0.05 wt. % Cr;

0.01-0.05 wt. % Ti;

not greater than 0.05 wt. % Zn;

not greater than 0.05 wt. % V;

not greater than 0.05 wt. % Zr;

the balance being aluminum and impurities.

10 . A method comprising:

(a) casting a 6xxx aluminum alloy as a cast product, wherein the 6xxx aluminum alloy comprises:

0.65-0.85 wt. % Si;

0.40-0.59 wt. % Mg;

wherein (wt. % Mg)/(wt. % Si) is from 0.47 to 0.90;

0.05-0.35 wt. % Fe;

0.04-0.13 wt. % Mn;

0-0.20 wt. % Cu;

0-0.15 wt. % Cr;

0-0.15 wt. % Zr;

0-0.15 wt. % Ti;

0-0.10 wt. % Zn;

0-0.05 wt. % V;

the balance being aluminum and impurities;

(b) hot rolling the cast product to an intermediate gauge product, wherein either:

(i) an exit temperature of the intermediate gauge product is not greater than 290° C. and wherein an anneal of the intermediate gauge product is completed after the hot rolling; or

(ii) an exit temperature of the intermediate gauge product is from 400 to 480° C.;

(c) cold rolling the intermediate gauge product to a final gauge product;

wherein the intermediate gauge product has an as-received thickness;

wherein the final gauge product has a final thickness;

wherein the cold rolling comprises reducing the as-received thickness by at least 50% to achieve the final thickness.

11 . The method of claim 10 , comprising:

after the cold rolling, solution heat treating and then quenching the final gauge product;

wherein the solution heat treating comprises heating the final gauge product to a peak metal temperature;

wherein the peak metal temperature is not greater than 593° C.

12 . The method of claim 11 , wherein the final gauge product realizes a predominately recrystallized microstructure.

13 . The method of claim 12 , wherein the final gauge product realizes an area weighted average grain size of not greater than 45 micrometers, or not greater than 40 micrometers.

14 . The method of claim 13 , wherein the final gauge product comprises at least 10% Cube texture.