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Chromium

Chromium

 
PHYSICAL DATA

          Atomic Number

          24

          Atomic Weight

          51.996

          Density [ 20°C / 68°F ]

          7.19 g/cm3

          Melting Point

          1850 °C

GENERAL INFO
          History

Discovered in 1797 by Louis-Nicholas Vauquelin in Paris, France.  The name is derived from the Greek word "chroma" meaning color.

          Uses
  • Dichromates used in leather tanning.
  • Oxides used in refractories.
  • Used in glass coating industry to impart emerald green color.
  • Used in steel making to Increase hardenability, wear resistance, and high temperature strength.  Also improves hardness penetration.
  • Used to make stainless steels.
FORMS
          Typical
          Pure forms: Chromium compounds:
  • Aluminothermic
  • Electrolytic
  • Ore
  • Oxides
  • Carbides
  • Chromium Bearing Ferro Alloys
          F.W.W.
   

Acknowledgements

  
F.W. Winter
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