Windows and doors are available in various aluminum grades, although the 6000 series aluminum alloys are most commonly used.

6061 Aluminum Grade
The advantages of aluminum alloy 6061 are good processing performance, excellent welding characteristics and electroplating properties, good corrosion resistance, high toughness and no deformation after processing, dense material without defects and easy polishing, easy coloring film, good oxidation effect and other excellent features. Therefore, it also has many advantages in making doors and windows.

6063 Aluminum Grade
Aluminum alloy 6063 is an aluminum alloy containing silicon and magnesium, which has good plasticity, strength and corrosion resistance and is suitable for use in construction, furniture and industrial fields. It can improve its hardness and strength through T5 or T6. It can also improve its surface's wear resistance and aesthetics through anodizing treatment. It can also choose different profile types (standard or thermal break aluminum alloy) according to different opening methods (sliding windows, casement windows, top-hung windows, etc.). In terms of making doors and windows, the advantages of 6063 aluminum alloy are good corrosion resistance, plasticity and machinability, and good surface treatment effect.