6063 is a low alloyed Al-Mg-Si high plasticity alloy. Has many valuable features:
Strengthened by heat treatment, it has high impact toughness and is not sensitive to notches.
It has excellent thermoplasticity and can be extruded at high speed into various profiles with complex structures, thin walls, and hollows, or forged into forgings with complex structures. The quenching temperature range is wide and the quenching sensitivity is low. After extrusion and forging, as long as the temperature is higher than the quenching temperature, it can be quenched by water spraying or water penetration. Thin-walled parts (δ<3mm) can also be air-quenched.
It has excellent welding performance and corrosion resistance, and has no tendency of stress corrosion cracking. Among aluminum alloys that can be strengthened by heat treatment, Al-Mg-Si alloy is an alloy in which no stress corrosion cracking phenomenon has been found.
The surface after processing 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 (parking effect).
