[ChrisH]

According to Machinery's handbook the yield stress for 6061-t6 is about 40ksi, ands 2024 is 57ksi, a 40% improvement. So it could be that you wind up with a stronger arm that is still lighter by changing alloys.

But to verify that I need the cross sectional dimensions of both the new material and the old.

I will say that .032 is pretty thin and easily dented. Those small dents can compromise the strength of the section. SO that is something to be considered as well.

The numbers on the trade off are pretty easy to run , but I need a few more of them