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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.

Date ASIA EUROPE USA
01/12/2009 3648.52 2000-2200 1650-2500
25/11/2009 3648.52 2000-2200 1650-2500
18/04/2009 3211.4 4347-4426 3000-3700
31/12/2008 3762.5 2797 3806.875
26/12/2008 3225-4200 3225-4200 3225-4200
30/10/2008 3450-3550 3665-3800 3665-3800
30/09/2008 3850-3950 3850-3950 3850-3950
30/08/2008 3792 3600 3600
30/07/2008 6655 6656.98 8245
30/06/2008 6765 7099.58 8512
30/05/2008 6897 7149.37 8755
30/04/2008 7109 7141.07 8210
30/03/2008 6930 6903.18 8063
28/02/2008 6764 6885.2 7743
31/01/2008 3534.625 2418.375 2985.625
30/01/2008 6610 6668.04 8284
30/12/2007 5155 5200 8205
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