What is the temperature needed to bend aluminum?

Aluminium:

1. Aluminium is often bent at room temperatures. The precision of the aluminium fixtures can be increased by machining the aluminium (and its alloys).
2. The bending of aluminium at relatively high temperatures (in the range of $600°\mathrm{C}\mathrm{to}700°\mathrm{C}$) is not very cost-efficient.
3. However, these temperatures enable the casting of several high-resistance alloys of aluminium in many complex shapes.
4. Thus, ambient temperatures are the most efficient temperatures at which aluminium can be bent

Therefore, the most effective temperatures for bending metal are ambient temperatures.