What is the most common general purpose aluminum alloy?

Question

i want something cheap and quick, with some mechanical properties...

general purpose stuff... Is AL 6061per ASTM B221 the right choice?

Answer 1

Yes, AL 6061 as per ASTM B221 is the right choice.

-6061 is an aluminium alloy, with magnesium and silicon as the alloying elements. It has generally good mechanical properties and is heat treatable and weldable. It is one of the most common alloys of aluminum for general purpose use.

It is commonly produced in several heat temper grades, 6061-O, 6061-T4, 6061-T6, 6061-T651, 6061-T42.