Steel is an alloy of iron made by melting a mixture of iron ore, limestone and coke together in a furnace. The steel created is strong, flexible and lightweight, making it an ideal material for use in building. Scrap steel can also be recycled by being melted down and remolded to perform a new purpose.
The properties of steel can be changed to suit a particular building need, such as high strength for beams and girders or flexibility in earthquake-prone areas. So far there are over 3,500 types of steel, each with a different use in building parts and construction, according to LivingSteel.org.
Steel is used in many building parts including wires, bars, beams, girders, coils, rails, wheels, switches and axles in automobiles. Steel can also be used to create entire buildings. As the parts are formed in a factory, these buildings are often quicker to erect than their traditional counterparts. Another benefit of steel buildings is that as they are lighter, they require a much smaller foundation.