1. Strengthened by heat treatment, high impact toughness, insensitive to notch.
2. Excellent bonding performance and corrosion resistance, no tendency to stress corrosion cracking. Among the thermally externally strengthenable aluminum alloys, Al-Mg-Si alloys are the only alloys without stress corrosion cracking.
3. After processing, the surface is very smooth and easy to anodize and color. The disadvantage is that after quenching, if it is parked at room temperature for a period of time, it will have an adverse effect on the strength in terms of aging (parking effect).