Stainless

Chromium was first identified as a chemical element about 1798 and was extracted as an iron-chromium-carbon alloy. This was the material used initially by Stodart and Faraday in 1820 in their experiments on alloying. The same material was used by John Woods and John Clark in 1872 to make an alloy containing 30 to 35 percent chromium; although it was noted as having improved corrosion resistance, the steel was never exploited. Success became possible when Hans Goldschmidt, working in Germany, discovered in 1895 how to make low-carbon ferrochromium.

Stainless steel is called steel, containing more than 13% chromium. It protects the metal iron from corrosion. It forms a protective film on the surface of the metal and prevents oxidation. Chrome also helps to get rid of internal defects. The most famous monument of history made of stainless steel is Iron Pillar of Delhi. (See Indian steel withstands centuries of corrosion) Only chrome is replaced by phosphorus, which has the same effect. Scientists have become interested in it in the middle of 19 century. The first stainless steel patented engineers “Krupp” Benno Strauss and Eduard Maurer October 17, 1912.
Stainless steel is widely used as structural materials in engineering, in detail, and devices operating on the wear and tear, chemical and food industries, construction, shipbuilding and other industries. Springs, a coin, cutting tools, fixtures, product operating at high temperatures, turbines, valves and much more is made of stainless steel. Products can be found everywhere.