Iron+and+Steel

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==**It is common today to talk about 'the iron and steel industry' as if it were a single entity, but historically they were separate products. **==

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==**Iron is a metal extracted mainly from the iron ore hematite. Is rarely found as a free element. In order to obtain elemental iron, oxygen and o **==


==**ther impurities must be removed by chemical reduction. The properties of iron can be modified by alloying it with various other metals and some non-metals, n **==

**otably carbon and silicon to form steels. **
==**Iron is the most widely used of all the metals, accounting for 95% of worldwide metal production. Its low cost and high strength make it indispensable in engineering applications such as the construction of machinery and machine tools,automobiles, the hulls of large ships, and structural components for buildings. Since pure iron is quite soft, it is most commonly used in the form of steel. **==

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 * Steel is an alloy consisting mostly of iron, with carbon content. Though steel had been produced by various inefficient methods long before the Renaissance, its use became more common after more efficient production methods were devised in the 17th century. In the mid-19th century, steel became a relatively inexpensive mass-produced good. Today, steel is one of the most common materials in the world and is a major component in buildings, infrastructure, tools, ships, automobiles , machines, and appliances. **


 * Someone says one time that “the old cast iron buildings died out. I'm not really sure whether the new skyscrapers killed them or the new esthetics”. Well I think that both things happened, the first reason is that the world it’s changing, as time passes there are more people, and when the cities started to grow it was necessary to create housing, and that was the beginning of skyscrapers. Also the esthetics change and steel was, and is, better received that iron nowadays, not only for the constructive characteristics but for its aesthetic characteristics. **

__  Related words.

-The **slab** of my bedroom is different that the one of the rest of my house

- I **fused** different metals together to create a piece of art 


-I made a **cast** of clay with the shape of my face -I studied the **monolithics** for my history test. -My kitchen is made of **cast iron** because it is a non-toxic material

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