Anodized aluminum refers to aluminum that has undergone an electrochemical anodizing process to increase its thickness and durability. This process forms a hard, corrosion-resistant oxide layer on the aluminum surface, making it suitable for applications requiring scratch resistance, wear resistance, and aesthetic appeal, such as automotive trim, cookware, and architectural components. The anodized coating can be dyed various colors and enhances the natural properties of aluminum alloys like 6061, which contains aluminum, magnesium, silicon, and other elements.