Non-ferrous
Non-ferrous metals include aluminum, brass, copper, nickel, tin, lead, and zinc, as well as precious metals like 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 instance, most non-ferrous metals are much more malleable than ferrous metals. Non-ferrous metals are also typically lighter, making them well-suited for use where strength is needed but weight is a factor, such as in the aircraft or canning industries. Because they contain no iron, non-ferrous metals have a higher resistance to rust and corrosion, which is why you will find these materials in use for gutters, water pipes, roofing, and road signs. Finally, nearly all non-ferrous metals are also non-magnetic, which makes them perfect for use in small electronics and as electrical wiring.
As far as recycling, aluminum is the third most recycled material in the world. However, many other non-ferrous metals like copper, brass, and lead are relatively scarce, and metallurgists rely heavily on scrap material recycling for these items. Non-ferrous metals are somewhat harder to come by and more difficult to manufacture. This makes the demand higher, which drives up the price per pound higher than ferrous metals. While aluminum prices don’t fluctuate often due to recycling efforts, others like copper and brass can change drastically in just a month’s time depending on the market.