Non-ferrous metals include aluminum, brass, copper, nickel, tin, lead and zinc, as well as precious metals such as gold and silver. While non-ferrous metals can provide strength, they are primarily used where their differences from ferrous metals can provide an advantage.
For example, non-ferrous metals are much more malleable than ferrous metals. Non-ferrous metals are also much lighter, making them suitable where strength is needed and weight is a factor, such as in aeronautics or canned goods. As they do not contain iron, non-ferrous metals have a higher resistance to rust and corrosion, which is the reason why these materials are used for gutters, water pipes, roofing and traffic signs. Finally, they are also non-magnetic, making them perfect to use for small electronic devices and as electric cables.