Aluminum alloy is the most widely used type of nonferrous metal structural material in industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries. With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing, which has led to in-depth research on the weldability of aluminum alloy. Compared with ordinary carbon steel, it is lighter and more corrosion-resistant, but its corrosion resistance is not as good as pure aluminum. In a clean and dry environment, a protective oxide layer will form on the surface of aluminum alloy.
Aluminum tube is a kind of nonferrous metal tube, which refers to a metal tubular material that is hollow along its entire longitudinal length by extruding pure aluminum or aluminum alloy. It can have one or more closed through holes, with uniform wall thickness and cross section, and is delivered in a straight line or in a roll. It is widely used in automobiles, ships, aerospace, aviation, electrical appliances, agriculture, electromechanical, home furnishing and other industries.
Chemical composition and physical properties of aluminum