Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same

An aluminum alloy consisting of:

• 3.5-6.0 wt. % Mg;
• 2.5-5.0 wt. % Zn;
• wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40;
• 0.10-0.50 wt. % Mn;
• less than 0.05 wt. % Cu;
• up to 0.5 wt. % Si;
• up to 0.20 wt. % Zr;
• up to 0.30 wt. % Sc;
• up to 0.50 wt. % Cr;
• up to 0.25 wt. % each of any of Hf, V, and rare earth elements;
• up to 0.15 wt. % Ti;
• up to 0.35 wt. Fe;
• and
• the balance being aluminum and other elements, wherein the aluminum alloy includes not greater than 0.15 wt. % each of these other elements, and wherein the total of these other elements does not exceed 0.35 wt. %.