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Formula: Co
Form: Single Crystal
Material: Cobalt
CAS Number: 7440-48-4
Commodity: Metals
Purity: 99.99%
Top Section Thickness (mm): 1mm
Bottom Section Thickness: 1mm
Inside Diameter: 8mm
Outside Diameter: 10mm
Hazard Pictogram: GHS07, GHS08

Cobalt Top Hat Single Crystal

Cobalt Top Hat Single Crystal is one of Goodfellow’s single crystal offerings, with 15 variations available. Single crystals like these cobalt samples are valued for their precisely aligned atomic structure and purity, with no grain boundaries. Their orientation can be aligned along desired crystal planes. Applications take advantage of these qualities, using the cobalt crystals in fundamental physics research, electrochemistry studies, and as monochromators or analyzers for x-rays and neutron beams. Other uses arise in electronics and sensors.

Health hazard/Hazardous to the ozone layer

Serious health hazard

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Tolerances

Single Crystal
Orientation See Item
Thickness +2% / -1%
Length +2% / -1%
Top Hat
Inside Diameter +2% / -1%
Outside Diameter +2% / -1%
Bottom Section Thickness +2% / -1%
Top Section Thickness +2% / -1%

Material Properties for Metals

Atomic Properties
Mechanical Properties
Electrical Properties
Physical Properties
Thermal Properties
Atomic Properties
Element Value
Atomic number 27
Crystal structure Hexagonal close packed
Electronic structure Ar 3d⁷ 4s²
Valences shown 2, 3
Atomic weight( amu ) 58.9332
Thermal neutron absorption cross-section( Barns ) 37.5
Photo-electric work function( eV ) 5
Atomic radius - Goldschmidt( nm ) 0.125
Ionisation potential( No./eV ) 2/ 17.06
Ionisation potential( No./eV ) 4/ 51.3
Ionisation potential( No./eV ) 3/ 33.5
Ionisation potential( No./eV ) 1/ 79.5
Ionisation potential( No./eV ) 1/ 79.5
Ionisation potential( No./eV ) 6/ 102
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.32
Poisson's ratio 0.32
Bulk modulus( GPa ) 181.5
Bulk modulus( GPa ) 181.5
Tensile modulus( GPa ) 211
Tensile modulus( GPa ) 211
Hardness - Vickers( kgf mm⁻² ) 320
Hardness - Vickers( kgf mm⁻² ) 170
Tensile strength( MPa ) 1135
Tensile strength( MPa ) 760
Yield strength( MPa ) 345-485
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 6.34@20@20°C
Temperature coefficient( K⁻¹ ) 0.0066@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) -1.33
Physical Properties
Element Value
Boiling point( C ) 2870
Density( gcm⁻³ ) 8.9@20°C
Thermal Properties
Element Value
Melting point( C ) 1495
Latent heat of evaporation( J g⁻¹ ) 6490
Latent heat of fusion( J g⁻¹ ) 263
Specific heat( J K⁻¹ kg⁻¹ ) 456@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 100@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 12.5@0-100°C

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