1. Lightweight and strong
The specific gravity of aluminum is about 2.7, which is only one-third of that of steel, but its strength can reach about 70% of general structural steel. This makes aluminum excellent in "specific strength" (strength per unit weight), and it is a material that is both light and strong.
2. Excellent rust resistance
A thin oxide film will naturally form on the surface of aluminum, which is like a protective film to prevent further corrosion. Therefore, aluminum can maintain a good appearance without anti-rust painting or plating.
