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Cobalt, Co
Categories: Metal; Nonferrous Metal; Cobalt Alloy; Pure Element

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Physical PropertiesOriginal ValueComments
Density 8.80 g/cc
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 58.9332011995
Atomic Number 27
Thermal Neutron Cross Section 34.8 barns/atom
X-ray Absorption Edge 1.608 ÅK
 13.343 ÅLI
 15.534 ÅLII
 15.8314 ÅLIII
Electrode Potential -0.280 V
Electronegativity 1.88Pauling
Ionic Radius 0.630 ÅCrystal Ionic Radius for Valence +3
 0.720 ÅCrystal Ionic Radius for Valence +2
Electrochemical Equivalent 1.1 g/A/h
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 125
Hardness, Vickers 253
Tensile Strength, Yield 225 MPa
Modulus of Elasticity 211 GPa
Poissons Ratio 0.32
Shear Modulus 82.6 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000624 ohm-cm
Magnetic Permeability 68Initial
 <= 245
Curie Temperature 1121 °C
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 259.6 J/g
Heat of Vaporization 3280 J/g
CTE, linear 12.5 µm/m-°C
@Temperature 20.0 - 100 °C
 14.2 µm/m-°C
@Temperature 200 °C
Specific Heat Capacity 0.440 J/g-°C
Thermal Conductivity 69.21 W/m-K
Melting Point 1493 °C
Boiling Point 2927 °C
 
Optical PropertiesOriginal ValueComments
Emissivity (0-1) 0.13
@Temperature 500 °C
unoxidized, total spectrum
Reflection Coefficient, Visible (0-1) 0.37200 nm
 0.6751060 nm
 
Component Elements PropertiesOriginal ValueComments
Cobalt, Co 100 %
 
Descriptive Properties
CAS Number7440-48-4

References for this datasheet.

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