According to American Machine Tools, you are correct.
http://www.americanmachinetools.com/...e_strength.htm

More important considerations are bend radius and springback. Most press
brakes come with sharp upper dies and 90° "vee" lower dies. Neither work
very well with hardened aluminum alloy. For aluminum, you need a "U"
channel in the bottom die, and a radiused upper die. 1/8" radius is a good
general purpose choice for the upper die.

To get a 90° bend in 2024 aluminum, you have to over bend it by about 7° to
accomodate springback. For 7075 T-6 it is 20°. This can't be done with a
90° "vee" die.


Ihab Awad wrote in news:d9KdnZNva5hK7j_fRVn-
:

Hi folks,

Most bending brakes rate their capacity by the thickness of mild steel
that can be bent. How does this relate to capacity of 2024-T3 aluminum?
So, what aluminum thickness can a 16ga, 20ga, 22ga, ... brake handle?

Should I simply multiply by the ratio of the yield strengths? That
somehow seems like an oversimplification.....

Thanks a lot. Peace,

Ihab




--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.