Iron and steel are used widely in the construction of roads, railways, other infrastructure, appliances, and buildings. Most large modern structures, such as stadium and skyscrapers, bridges, and airports, are supported by a steel skeleton. Even those with a concrete structure employ steel for reinforcing. It sees widespread use in major appliances and cars . Despite the growth in usage of aluminium, it is still the main material for car bodies. Steel is used in a variety of other construction materials, such as bolts, nails and screws and other household products and cooking utensils.
Other common applications include shipbuilding ,pipeline ,mining , offshore ,construction ,aerospace, white goods , heavy equipement such as bulldozers, office furniture, steel wool , tool , and armour in the form of personal vests or (better known asrolled homogeneous armour in this role).