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.