Ferrous metals

It took a long time before people learned to extract iron from ore and make him iron and steel. We - the children age of iron. Imagine the following scene: all the iron in the Earth's surface has disappeared and that it nowhere to take it. Anyone would have noticed it right away: gone to his bed, would have collapsed all the furniture, would have destroyed all the nails, collapsed floors of reinforced concrete buildings. And on the streets would reign terror of destruction: there would be no more rails, wagons, trams, subways, cars would disappear, lattice fences and gardens, even the paving stones would become the clay dust. Plants began to wither without revitalizing the metal. The most devastating disaster could not do more harm than the disappearance of the earth iron. But what can I say, the man himself, having lost three grams of iron in the body and blood, could not live a day. Despite its hardness, iron metal is very vulnerable: it is covered with rust, rinsed with water and then dispersed on the surface of the earth. All sorts of ways people try to keep the iron in his hands. He covers it with a thin layer of zinc or tin, and turns into a gesture. People paint tin with oil paint, lacquer, nickel, chrome plated, lubricated with oil or kerosene. Even in ancient Greece, smart heads of philosophers and rulers Moucha liter question: what will happen to mankind, when the Earth will be left will be depleted of iron and past mines. In the twentieth century, the question arose particularly acute. In America, President Roosevelt first sounded the alarm, and the White House in Washington, began a passionate debate kings of iron and coal kings railroads - Eaters of iron. Assemble the entire geological congresses. The greatest geologists of all countries have started to calculate iron stores and counted. With ever-increasing production of iron left by 60 years. What to do? There is only one way in which people have learned during the First World War. This method is particularly well used in Vilgelmovskoy Germany. In that country, devised a special term "substitute" - a substitute. Lightweight aluminum and its alloys are replacing the heavy iron. Began to build a house from a thin core of wire and the collapse of nodding cement. To replace iron design comes reinforced concrete. Iron is gradually yielding its place with other metals, aluminum, titanium, lithium, beryllium and others.