An aluminum alloy comprising: about 1.8 to about 5.6 percent by weight copper; about 0.6 to about 2.6 percent by weight lithium; silver in a quantity of about 0.05 to about 0.7 percent by weight; at least one of: lanthanum up to about 1.5 percent by weight; strontium up to about 1.5 percent by weight; cerium up to about 1.5 percent by weight; and praseodymium up to about 1.5 percent by weight; optionally at least one of: silicon in a non-zero quantity up to about 0.20 percent by weight; iron in a non-zero quantity up to about 0.30 percent by weight; manganese in a non-zero quantity up to about 0.6 percent by weight; magnesium in a non-zero quantity up to about 1.9 percent by weight; chromium in a non-zero quantity up to about 0.10 percent by weight; zinc in a non-zero quantity up to about 1.0 percent by weight; titanium in a non-zero quantity up to about 0.15 percent by weight; and zirconium in a non-zero quantity up to about 0.16 percent by weight; optionally at least one of nickel up to about 0.05 percent by weight, gallium up to about 0.05 percent by weight and vanadium up to about 0.05 percent by weight; optionally one or more other lanthanides; and balance aluminum; wherein the elements other than aluminum, copper, lithium, lanthanum, strontium, cerium and praseodymium are present at a total amount up to 6.0 percent by weight. about 1.8 to about 5.6 percent by weight copper; about 0.6 to about 2.6 percent by weight lithium; silver in a quantity of about 0.05 to about 0.7 percent by weight; at least one of: lanthanum up to about 1.5 percent by weight; strontium up to about 1.5 percent by weight; cerium up to about 1.5 percent by weight; and praseodymium up to about 1.5 percent by weight; lanthanum up to about 1.5 percent by weight; strontium up to about 1.5 percent by weight; cerium up to about 1.5 percent by weight; and praseodymium up to about 1.5 percent by weight; optionally at least one of: silicon in a non-zero quantity up to about 0.20 percent by weight; iron in a non-zero quantity up to about 0.30 percent by weight; manganese in a non-zero quantity up to about 0.6 percent by weight; magnesium in a non-zero quantity up to about 1.9 percent by weight; chromium in a non-zero quantity up to about 0.10 percent by weight; zinc in a non-zero quantity up to about 1.0 percent by weight; titanium in a non-zero quantity up to about 0.15 percent by weight; and zirconium in a non-zero quantity up to about 0.16 percent by weight; silicon in a non-zero quantity up to about 0.20 percent by weight; iron in a non-zero quantity up to about 0.30 percent by weight; manganese in a non-zero quantity up to about 0.6 percent by weight; magnesium in a non-zero quantity up to about 1.9 percent by weight; chromium in a non-zero quantity up to about 0.10 percent by weight; zinc in a non-zero quantity up to about 1.0 percent by weight; titanium in a non-zero quantity up to about 0.15 percent by weight; and zirconium in a non-zero quantity up to about 0.16 percent by weight; optionally at least one of nickel up to about 0.05 percent by weight, gallium up to about 0.05 percent by weight and vanadium up to about 0.05 percent by weight; optionally one or more other lanthanides; and balance aluminum; wherein the elements other than aluminum, copper, lithium, lanthanum, strontium, cerium and praseodymium are present at a total amount up to 6.0 percent by weight.