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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.
|Property Name||Property Value||Property Name||Property Value|
|Atomic Code||(27Co58.93320)||Covalent Radius||1.16Angstroms|
|CAS #||7440-48-4||Vickers Hardness @ 20°C||253|
|Melting Point||1495°C||Coefficient of Thermal Expansion||12.5x10-6K-1|
|Boiling Point||2927°C||Electrical Resistivity||6.34µΩ-cm|
|Themal Conductivity||0.165cal/cm2/cm/s/°C||Curie Temperature||1121°C|
|Specific Heat @ 25°C||0.1056cal/g°C||Compressibility||0.50x10-6cm2/kg|
|Heat of Fusion||62.0cal/g||Thermal Neutron Cross Section||34.8barns/atom|
|Heat of Vaporization||1500cal/g||Poisson Ratio||0.32|
|Atomic Volume||6.7W/D||Young's Modulus||30.6x106psi|
|First Ionization Energy||181K-cal/g-mole||Tensile Strength (annealed)||37.0x103psi|