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Formula: Co
Form: Pellet/Lump
Material: Cobalt
CAS Number: 7440-48-4
Commodity: Metals
Purity: 99.8%
Maximum Lump Size: 40mm
Hazard Pictogram: GHS07, GHS08
Cobalt Pellets Grinding Ball is part of Goodfellow's range of pellets. As a hard metal, cobalt pellets are wear-resistant with high strength at high temperatures. The grinding balls are used for pulverizing and mixing materials in ore processing, cement, and power plants. Their spherical shape and high density make them ideal for efficient crushing and grinding. Goodfellow offers cobalt pellets in various sizes to suit different industrial milling applications.
Technical Data Sheet Safety Data Sheet Tolerance Properties

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Tolerances

Pellet/Lump
Maximum Lump Size Nominal

Material Properties for Metals

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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