SIMA OFFERS

  • SIMA can offer EB refined Nb bar, as well as Nb scrap.

GENERAL INFO

  • It is a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point.
  • A major development was the discovery that steel could be made highly resistant to corrosion and discolouration by adding chromium to form stainless steel.
  • This application, along with chrome plating (electroplating with chromium) are currently the highest-volume uses of the metal.
  • Chromium and ferrochromium are produced from the single commercially viable ore, chromite, by silicothermic or aluminothermic reaction or by roasting and leaching processes. 

APPLICATIONS IN METALLURGY

  • Hafnium is used in iron, titanium, niobium, tantalum, and other metal alloys.
  • An alloy used for liquid rocket thruster nozzles, for example the main engine of the Apollo Lunar Modules is C103, which consists of 89% niobium, 10% hafnium and 1% titanium.
  • Small additions of hafnium increase the adherence of protective oxide scales on nickel-based alloys.

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