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Cr
Chromium

History

 Mineral containing chromium, was discovered near Yekaterinburg in 1766 I.G. Lehman and named ¬«Siberian red lead¬». Now the mineral called krokoit. In 1797 French chemist Louis Nicolas Voklen allocated from the metal, which is called chromium, because of its varied colors.

Nowadays

 The most appropriate chromium compounds are ferro-alloys. Steel is alloying on their base . Steel alloyed with chromium has a higher tensile strength, resistance to corrosion, oxidation and corrosive environments. Stainless steel most common brands contain 18% chromium and 8% nickel. The content of carbon in it is very small - up to 0.1%. Stainless steel is well resists corrosion and oxidation, maintain strength at high temperatures.

Date ASIA EUROPE USA
26/12/2009 9812.49 9812.49 9812.49
19/12/2009 9812.54 9812.54 9812.54
12/12/2009 9666.63 9666.63 9666.63
05/12/2009 9814 9814 9814
28/11/2009 9951.4 9951.4 9951.4
21/11/2009 9812.81 9812.81 9812.81
14/11/2009 9651.53 9651.53 9651.53
07/11/2009 9803.82 9803.82 9803.82
31/10/2009 9565.86 9565.86 9565.86
24/10/2009 9756.23 9756.23 9756.23
17/10/2009 9814.23 9814.23 9814.23
10/10/2009 9815.94 9815.94 9815.94
02/10/2009 9814.94 9814.94 9814.94
25/09/2009 9813.7 9813.7 9813.7
18/09/2009 9532.55 9532.55 9532.55
12/09/2009 9518.27 9518.27 9518.27
05/09/2009 9565.86 9565.86 9565.86
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