1100 is industrial pure aluminum, the aluminum content (mass fraction) is 99.00%, and it can not be heat-treated. It has high corrosion resistance, electrical conductivity and thermal conductivity, its density is small, plasticity is good, and various aluminum materials can be produced by pressure processing, but the strength is low. Other process performance is basically the same as 1050A. 1100 is usually used for good forming and processing properties, high corrosion resistance, and does not require high strength, such as food and chemical handling and storage equipment, sheet metal products, hollow hardware for rolling and rolling, and welding combination keys. , reflectors, nameplates, etc.