3003 aluminum coil is the most widely used aluminum alloy. It is made up of aluminum, copper, iron, manganese, silicon and zinc. It is commonly used because it has great resistance to corrosion and is moderately strong. The 3003 aluminum coil is 20% stronger than 1100 grade alloys because it is fused with manganese.

Because it s not heat treatable, it has to be strengthened using cold working alone.
The most common applications for the 3003 aluminum coil are for fuel tanks, sheet metal work and other types of projects that need a metal that is stronger than the 1100 series aluminum. In some cases, it is used for cooking utensils, refrigerator panels, gas lines, storage tanks, garage doors, builder s hardware and awning slats.