[MrForbes]

looks like you're just trying to bend a piece of aluminum rod, using a press, so it really doesn't matter how much force it takes to bend it, as long as the press is strong enough and your jig doesn't bend.

But you really need to figure out if the part will be strong enough when you're done bending it....and we have no clue what you're planning to use the part for, so we can't help you figure that out.

I suggest you do an experiment, if you have some extra rod available...bend it and see what happens. If you can use a pipe instead of a piece of angle to bend the inside radius, it will probably result in a useable piece of aluminum rod (assuming your design can work with a larger bend radius)