It is a kind of high-strength hard aluminum that can be strengthened by heat treatment. It has medium plasticity in annealing, fresh quenching and hot conditions, and has good spot welding properties. Aluminum tubes have a tendency to form intergranular cracks when gas welding and argon arc welding are used; aluminum tubes The machinability is good after quenching and cold work hardening, but poor in the annealed state. The corrosion resistance is not high, and anodizing and painting methods are often used, or an aluminum layer is added to the surface to improve corrosion resistance. Can also be used as mold material.
Advantages of aluminum tubes: First, the advantages of welding technology: The welding technology of thin-walled copper and aluminum tubes suitable for industrial production is known as a difficult problem and is the key technology for replacing aluminum with copper in air conditioner connecting pipes.