Iron metallic chemical element, which is one of the oldest metals discovery. Symbol Fe (from Latin: ferrum) and atomic number 26. The group is the eighth-fourth session of the periodic table.
Is essential to the lives of humans and animals being included in the installation of hemoglobin, as well as for the life of the plants being one of the necessary elements for the formation of chlorophyll [1], and enters into almost everything.
Is the fourth elements presence in the earth's crust, often found in nature in the form of oxides. In the whole racism is a malleable metal and clouds. Iron and its alloys is more metallic materials used at all. Iron is also considered more stable chemical elements at all because of the balance of the electromagnetic force and the strong nuclear force inside the nucleus of the atom, the lightest elements are able through nuclear fusion - and the heavier elements through nuclear fission - to become closer in their qualities of iron. Meteors falling on the ground to contain amounts of iron may be up to 90% of the mass of meteorites.
Iron originally silvery color, but it is oxidized in the air. Iron is stronger metals at all, and most important for engineering purposes protection clause of rust (ie interaction with oxygen). There are several ways to protect the iron from rusting and the simplest ever prevent contact of oxygen or moisture from the iron and iron that encapsulates the insulating material, such as the use of dyes or PVC insulation, for example. One of the best methods used to protect it is to use cathodic protection system to protect iron from rust and corrosion.
Iron in its pure state softer than aluminum, and increased hardness add some alloying elements such as carbon by certain percentages, consists of steel alloy, which is a thousand times stronger than pure iron. Iron equal between (2) and (6+), except that in the months cases is a reward him (2+) or (3+).
