The 1100 aluminum is made of fresh aluminum ingot, Also called pure aluminum. Because the aluminum purity is up to 99%-99.7%. Since it does not contain other metal elements, it is a single production process and relatively inexpensive. This makes it be the most commonly used series in the normal industry. 

1100 is commercially pure aluminium. It is soft and ductile and has excellent work ability. It is ideal for applications involving intricate forming because it work hardens more slowly than other alloys. It has the most weld ability of all aluminium sheet alloys using any method, but is non-heat treatable. It has an excellent resistance to corrosion and is commonly used in the chemical and food processing industries.