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Zirconium (40Zr91.224)
[7440-67-7]
[7440-67-7]
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Elemental Form| Zirconium is a hard, lustrous, grayish-white metal. The mineral has been known since ancient times, but the existence of elemental zirconium was not known until the late 18th century. It is abundant in S-type stars and is a component of the sun and meteorites. It is very corrosion resistant and is utilized extensively by the chemical industry where corrosive agents are used. Zirconium is routinely found with some level of hafnium, since seperation of the elements is difficult. | ||||
| Melting Point | 1855°C | Boiling Point | 3580°C | |
| Density | 6.506g/cm3 | Specific Heat @ 25°C | 0.066cal/g°C | |
| Heat of Fusion | 3.74k-cal/g-atom | Heat of Vaporization | 120k-cal/g-atom | |
| Atomic Volume | 14.1W/D | First Ionization Energy | 160K-cal/g-mole | |
| Electronegativity | 1.4Pauling's | Covalent Radius | 1.45Angstroms | |
| Vickers Hardness | 110 | Linear Coefficient of Expansion | 5.7x10-6K-1 | |
| Electrical Resistivity | 41.4µΩ-cm | Crystal Structure | Hexagonal | |
| Compressibility | 11.77x10-6cm2/kg | Thermionic Work Function | 4.1eV | |
| Modulus of Elasticity | 11.2x106psi | Poisson Ratio | 0.34 | |
| Magnetic Susceptibility | 119x10-6emu/g-atom | Grueneisen Constant | 128,900 | |
| Hall Coefficient | 0.18x1012V-cm/A-Oe | |||
