Element Search
Cobalt (27Co58.93320)
[7440-48-4]
[7440-48-4]
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Elemental Form| A brittle, hard metal, resembling iron and nickel in appearance, cobalt has a magnetic permeability approximately two thirds that of iron. It is frequently obtained as a by-product of nickel, silver, lead, copper, and iron ores and is present in meteorites. Cobalt is often alloyed with other metals due to its unusual magnetic strength and is used in electroplating because of its appearance, hardness, and resistance to oxidation. | ||||
| Melting Point | 1495°C | Boiling Point | 2927°C | |
| Density | 8.92g/cm3 | Themal Conductivity | 0.165cal/cm2/cm/s/°C | |
| Specific Heat @ 25°C | 0.1056cal/g°C | Heat of Fusion | 62.0cal/g | |
| Heat of Vaporization | 1500cal/g | Atomic Volume | 6.7W/D | |
| First Ionization Energy | 181K-cal/g-mole | Electronegativity | 1.8Pauling's | |
| Covalent Radius | 1.16Angstroms | Vickers Hardness @ 20°C | 253 | |
| Brinell Hardness | 125 | Coefficient of Thermal Expansion | 12.5x10-6K-1 | |
| Electrical Resistivity | 6.34µΩ-cm | Crystal Structure | Hexagonal | |
| Curie Temperature | 1121°C | Compressibility | 0.50x10-6cm2/kg | |
| Thermal Neutron Cross Section | 34.8barns/atom | Poisson Ratio | 0.32 | |
| Young's Modulus | 30.6x106psi | Tensile Strength (annealed) | 37.0x103psi | |
