Ferrous metals and alloys are based on iron and include carbon steels, alloy steels, stainless steels, cast iron, cast steel, maraging steel, and specialty or proprietary iron-based alloys.
Nonferrous metals and alloys are not based on iron and include alloys of aluminum, copper, titanium, zinc, nickel, cobalt, tungsten, precious metals, refractory metals.
Stainless steel alloys are austenitic, ferritic, martensitic, precipitation hardened (PH), and duplex metal materials that are available in a wide variety of grades, shapes, and sizes.