5A06 aluminum plate is Al-Mg system rust-proof aluminum, 5A06 aluminum plate has high strength and corrosion stability, plasticity is still good in annealed and extruded state. The weld seam with argon arc welding, gas tightness and weld plasticity is still possible, gas welding and spot welding the strength of the welded joint is 90-95% of the strength of the substrate, good machinability.