Stainless steel or stainless steel (in English: Stainless Steel) is a metal alloy containing a mixture of elements. The percentage of iron in
which not less than 50%, and the proportion of chromium does not exceed 30%, and the proportion of carbon a minimum of 11.5%, in addition to some of the elements which represent about 8.5%, such as nickel and Molbidnyom to improve its properties. And gaining resistance to rust and corrosion due to the formation thin layer coherent and not visible from the chromium oxide stick to the surface of the metal and protect it from corrosion, and these protective layer enough whenever the percentage of high chrome steel.
Custom stainless steel for the first time by the world Bareilly in 1912 where he was able to obtain the alloy containing (12-13%), Chrome does not rust in the atmosphere and other media have been used for the manufacture of tableware and since then until now appeared many species, especially those that require high resistance to corrosion due to the presence amid harsh Assistant to corrosion, such as circles in the chemical and petroleum industries.
This name (stainless steel) stems from the fact that the steel (stainless) steel does not rust so easily that stainless steel with carbon steel normal, but in truth-corrosive and rust when special circumstances, and vary the resistance of the steel according to chromium ratio in it, so it is important Choosing the right type of stainless steel according to the application that will use it.
