Aluminum. Aluminum cookware is very popular. Nonstick, scratch-resistant anodized aluminum cookware is a good choice. The hard surface is easy to clean. It is sealed so aluminum cannot get into food. There have been concerns in the past that aluminum cookware increases the risk for Alzheimer disease. The Alzheimer's Association reports that using aluminum cookware is not a major risk for the disease.
An aluminum hardness classification of 2024-T351 is one of the hardest aluminum alloys, widely used in the metal industry. This alloy has good formability but poor strength when it is heated; due to this drawback, it cannot be used for welding purposes.