Question

What temperature is needed to bend aluminum?

Answer 1

The aluminum hardening process can be stopped by placing aluminum parts in a freezer until they're ready to be hit on the press again. After this secondary pressing, the parts go through an aging heat treatment process. Aluminum can be bent at any temperature.

Complete answer:
The thickness of a typical aluminum plate is at least $0.25$inches. Soft aluminum is much more ductile than several high-strength materials. Owing to its high ductility, aluminum can be bent into very sharp radii. Relatively hard aluminum samples are known to have lower ductility when compared to its soft form. However, it is important to note that aluminum retains its plasticity at extremely low temperatures. It can be bent even at temperatures as low as $- 270^\circ C$. Therefore, aluminum can be bent at any temperature. Aluminum is often bent at room temperatures. The precision of the aluminum fixtures can be increased by machining the aluminum (and its alloys). Bending of aluminum at relatively high temperatures (in the range of $660$ to $700^\circ C$) is not very cost-efficient. However, these temperatures enable the casting of several high-resistance alloys of aluminum in many complex shapes. Thus, ambient temperatures are the most efficient temperatures at which aluminum can be bent.

Note:
Even with the possibility of corrosion, steel is harder than aluminum. Most spinning tempers and alloys of an aluminum dent, ding or scratch more easily as compared to steel. Steel is strong and less likely to warp, deform or bend underweight, force or heat. Aluminum alloys will warp at high temperatures and unlike steel, do not glow red before melting.