What happens to thick or hard alloy aluminum when it is bent?
None of the strong or structural alloys can be brake formed unless they are in either the O or the T-4 temper. The common T-6 temper is quite hard, and when bent even minimally may crack. Thinner material in the 5000 series alloys can be bent with relative ease. In most applications, thicker material of the 5052 H32 alloy cannot be formed at an angle tighter than 90.˚ After reaching 90˚, severe crazing and cracking will occur on the bent corner. If the material is subjected to further stress while bending, it often breaks entirely. ASCO has had the most success bending 3003 H14 and 5005 H34 aluminum. These alloys are recommended for the majority of fabrication applications, as they are extremely workable. They can easily be cut, bent, and welded, and typically achieve the most favorable results.
