Minimum Bend Radius for 2024-T3 Alumuminum
Minimum Bend Radius for 2024-T3 Alumuminum
(OP)
I'm trying to figure out if how our shop's been bending 0.050" 2024-T3 is truly the way we should be doing it. We bend it with a 0.125" radius, but checking out a lot of other sources say we should be bending it with a 0.160-0.170 radius, but I'm not sure if those are specific for aerospace applications. This will be used for a robotic application. I wasn't sure if the larger bend radii are some FAA mandated thing or what. The Machinery's Handbook was of no help (oddly enough). It just says Rmin = T*(50/r - 1) where T = thickness and r = "percentage reduction in a tensile test for a given material (%)" with no explanation. So I have no real idea what "r" actually is.
Thanks,
Mike
Thanks,
Mike





RE: Minimum Bend Radius for 2024-T3 Alumuminum
Check out the link:-
http://www.americanmachinetools.com/bend_radius.ht...
RE: Minimum Bend Radius for 2024-T3 Alumuminum
I don't have to conform to aircraft or aerospace regulations for this application.
RE: Minimum Bend Radius for 2024-T3 Alumuminum
I was always taught never to use a bend radius tool less than the thickness of the material I was bending, I don't think you have a problem because it says minimum.
Obviously if you have cracking on the outside face then you need to look at the bend radius.
RE: Minimum Bend Radius for 2024-T3 Alumuminum
bending 0.05" on a 0.25" form is fine.
Quando Omni Flunkus Moritati
RE: Minimum Bend Radius for 2024-T3 Alumuminum
RE: Minimum Bend Radius for 2024-T3 Alumuminum
RE: Minimum Bend Radius for 2024-T3 Alumuminum
If bending at 0.125 is usually working OK in your shop, that's not really a surprise. Just bear in mind that the cracks start very small when the bend is "marginal". You might not have failures in the shop but they may fail later in service.
I know... when I was a full time designer these generous allowances for bends cramped my style too.
STF
RE: Minimum Bend Radius for 2024-T3 Alumuminum
Alcoa Aluminum in their handbook " Forming Alcoa Aluminum" gives the following information : Approximate Radii for sheet and plate 90 degree bend, Alclad 2024 T3, 1/64"thick 1,5T to 3 T, 1/32nd thick 2T to 4 T, 1/16th thick 3T to 5 T, 1/8th thick 4T to 6T, where T is the thickness of metal.
B.E.
You are judged not by what you know, but by what you can do.