Cookware material can refer to a variety of materials used to make cookware, such as IRON and cast IRON. IRON is a chemical element with the symbol Fe and an atomic number of 26. It is a metal that is found in nature and is one of the most abundant elements on Earth. Cast IRON is an alloy of IRON and carbon, and is produced by melting IRON ore and adding carbon. It is a strong and durable material that is often used to make cookware.