Aluminum alloys that are commonly used for building heat exchangers include 1100, 3003, 5052, 6061, and 6063.
1100 aluminum alloy is a commercially pure aluminum alloy that is soft and ductile. It is commonly used in heat exchangers due to its excellent thermal conductivity and corrosion resistance.
3003 aluminum alloy is also commonly used for heat exchangers due to its excellent thermal conductivity and resistance to corrosion. This alloy is also easy to form and weld, which makes it a popular choice for building heat exchangers in a variety of shapes and sizes.
5052 aluminum alloy is another commonly used alloy for heat exchangers due to its high strength, corrosion resistance, and excellent thermal conductivity. This alloy is also easily formed and welded, which makes it a popular choice for building complex shapes of heat exchangers.
6061 and 6063 aluminum alloys are also used for building heat exchangers due to their high strength and excellent thermal conductivity. These alloys are easily formed and welded, which makes them a popular choice for building complex shapes of heat exchangers.

In summary, 1100, 3003, 5052, 6061, and 6063 are commonly used aluminum alloys for building heat exchangers due to their high thermal conductivity, resistance to corrosion, and ability to be formed and welded into a variety of shapes and sizes.
