Chromium is one of the most popular metals in the world. Chromium is a silvery, lustrous, hard, and brittle metal known for its high mirror polish and corrosion resistance. It has a melting point of 1,857°C, a density of 7.2 g/cc, and a vapor pressure of 10-4 Torr at 1,157°C. Its name comes from the Greek word "chroma", which means color, due to its very colorful compounds. It is widely used in the automobile industry to form a shiny coating found on wheels and bumpers. Chromium is used in many vacuum applications such as automotive glass coatings, photovoltaic cell fabrication, battery fabrication, and decorative and corrosion resistant coatings.
Chromium (Cr) Specifications:
Material Type | Chromium |
Symbol | Cr |
Atomic Weight | 51.9961 |
Atomic Number | 24 |
Color/Appearance | Silvery, Metallic |
Thermal Conductivity | 94 W/m.K |
Melting Point (°C) | 1,857 |
Coefficient of Thermal Expansion | 4.9 x 10-6/K |
Theoretical Density (g/cc) | 7.2 |
Z Ratio | 0.305 |
Sputter | DC |
Max Power Density (Watts/Square Inch) | 80* |
Type of Bond | Indium, Elastomer |
Comments | Films very adherent. High rates possible. |
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