How Durable Is Anodized Aluminum?

Durability Factors

• Hard-anodized aluminum is made from a thicker gauge of metal than conventional aluminum pans, so it does not warp. Cookware made from this type of aluminum will not dent if dropped on surfaces as hard as concrete and is impervious to pitting by acidic foods. The surface is resistant to nicks and scratches from knives and other sharp cooking implements and will not chip or peel. Anodized aluminum is 30 percent harder than stainless steel and has a melting point of 1,221 degrees Fahrenheit, the same melting point as standard aluminum.

Anodized Aluminum Process

• To transform common aluminum into anodized aluminum, it is put through an accelerated and controlled process of natural oxidation. Before it is formed into pots and pans, the aluminum is immersed in an acid bath and an electrical current shot through the liquid. This triggers a chemical reaction that oxidizes the metal and forms aluminum oxide, which gives the cookware its dull, gray finish.

Cooking Benefits

• Anodized cookware’s weight makes it sit flush with coil, gas, glass and ceramic cooktop elements. The heat from the bottom of the pan radiates up the sides, which turns the pots and pans into miniature ovens. This makes them cook foods faster than cookware with clad bottoms that have layers of metal to increase even heat conduction but do not distribute the heat up the sides of pans. The smooth internal surface of anodized aluminum pans resists sticking, a feature further enhanced by adding minimal amounts of oil or butter to the pan. Cooking sprays are not recommended as they tend to create sticky films that are difficult to remove.

Anodized Aluminum Care

• To ensure optimum performance and durability from your anodized aluminum cookware, avoid using abrasive cleansers on it. Hand washing with a gentle dishwashing liquid maintains an evenly colored finish. Anodized cookware can also be cleaned in a dishwasher, although the high water and drying temperatures will cause slight discoloration. The discoloration will not adversely affect the performance of the pots and pans.