Engineering steel: Usually iron; however, it can be made tougher, ductile, stronger, harder, and more durable by adding copper, vanadium, tungsten, and manganese. It can be used for dies, tools, construction and machining equipment.

Carbon steel: One of the most common  ferrous metals with over 90% iron content. Besides structures and furniture, it can also be used in automotive components.

Cast iron: Contains more carbon than most other types. Due to the lack of other alloying elements besides iron and carbon, it is relatively inexpensive. The material can be used to manufacture cookware, gears, rods, and pins that are subject to wear, as well as mining equipment.

Wrought Iron: In comparison to cast iron, wrought iron has a relatively low carbon content. It has a high degree of elasticity and tensile strength, and is soft, ductile, and magnetic. It can be heated and reheated and shaped to a variety of shapes. Unlike most other ferrous metals, Wrought iron resists corrosion and oxidation. As a result, nuts, bolts, handrails, outdoor stairs, fences, and gates can be made with this material.

Stainless steel: Made from 100% recyclable materials, with a high amount of chromium that makes it more corrosion resistant than  carbon steel.  This material can be used to make appliances, pharmaceuticals, medical equipment, food-grade equipment, and knives.