The range of metal materials used to make cookware is very narrow, because cookware requires good thermal conductivity and chemical stability at the same time. Because the unstable chemical ability can result in changes in the taste of the food. Many metals have good thermal conductivity, but the chemically ability is not stable enough, so they are not suitable for processing cookware. Aluminum is a metal with excellent thermal conductivity, and it does not rust and is resistant to many forms of corrosion, so aluminum discs for cookware is a commonly used material for making cookware!
Aluminum circle for cookware is generally present in the form of stretching, die casting or anodizing. The stretched aluminum is formed by rotary stamping. Because of the soft nature of this metal, it is generally added by magnesium, copper to form aluminum alloy to increase strength. Stretched aluminum circle is widely used in baking sheets, juice boards, cake muffins, soup pots, steam pots, pasta pots and even woks. Die-casting aluminum circle tends to be thicker than stretching, making it more suitable for soup pots, dutch pots and heavy baking trays. Since the thermally conductive of die-casting aluminum is less than the stretching aluminum. Anodized aluminum discs naturally has a layer of aluminum oxide formed by electronic processing that is hard and not easily reacted with other substances. This process is often used to make juice pots, pottery pots, baking pans and dutch baking pans.