Chrome metal consists of nearly 100% chromium. Impurities include Fe, Al, Si.
Approximately 26,000 tonnes of chromium metal were produced in 2009.
There are two ways of producing chromium metal, the aluminothermic process chrome oxide and the electrolytic process using ferrochromium or chromic acid. Chromium metal standard grades range from 99% to 99.4%. Higher grades are available as 99.6% Cr and degassed quality with 99.8% Cr and low gas.
Chrome metal is mainly used in the production of specialty alloys, nickel and cobalt -based alloys (super alloys) where low iron is required. Due to their unique high temperature and corrosion resistance properties, these high performance alloys are used in the most critical environments, such as aeronautic, oil & gas production, land based turbines, petrochemical and chemical processing.
In addition, chromium metal powder is used in the production of welding electrodes and cored wires, aluminium briquettes and master alloys.