Zirconium is a classified as a transition metal on the Periodic Table. It has a density of 6.49 g/cc, a melting point of 1,852°C, and a vapor pressure of 10-4 Torr at 1,987°C. It is silvery-white in appearance and its propensity for corrosion resistance makes it heavily used by the chemical industry. Zirconium can be found in surgical appliances, superconductive magnets, and the cladding of nuclear reactors. It is also utilized as an alloying agent for steel. Its compound, zirconia, is often a substitute for diamonds in jewelry. Zirconium, along with its alloys and compounds, is evaporated under vacuum for optical coatings, semiconductors, and data storage devices.
Material Type | Zirconium |
Symbol | Zr |
Atomic Weight | 91.224 |
Atomic Number | 40 |
Color/Appearance | Silvery White, Metallic |
Thermal Conductivity | 22.7 W/m.K |
Melting Point (°C) | 1,852 |
Coefficient of Thermal Expansion | 5.7 x 10-6/K |
Theoretical Density (g/cc) | 6.49 |
Z Ratio | 0.6 |
Sputter | DC |
Max Power Density (Watts/Square Inch) | 50* |
Type of Bond | Indium, Elastomer |
Export Control (ECCN) | 1C234 |
Comments | Alloys with W. Films oxidize readily |
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