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Formula: Co
Form: Wire
Material: Cobalt
CAS Number: 7440-48-4
Commodity: Metals
Temper: Hard
Cobalt Spooled Wire is a high-purity, continuous metallic wire valued for its strength, corrosion resistance, and exceptional magnetic properties, enabling use in high-performance electrical, mechanical, and biomedical applications. Its spool format facilitates precision winding, efficient storage, and uninterrupted feed for automated manufacturing systems. Industries including aerospace, electronics, medical device production, and advanced materials engineering use cobalt spooled wire for electromagnetic coils, high-strength springs, thermally stable connectors, and sensor elements. Technologies benefiting from cobalt spooled wire include high-frequency electromagnetic devices, precision magnetic sensing systems, and thermal spray processes using cored-wire feedstocks for wear- and corrosion-resistant coatings. Advances in manufacturing, such as electrodeposition for cobalt nanowires and amorphous alloy processing, have expanded its role in nanoscale devices, AC sensor technologies, and magnetic data storage systems. This balance of mechanical durability, functional performance, and process adaptability ensures cobalt spooled wire’s importance in both large-scale industrial and cutting-edge research environments.

Health hazard/Hazardous to the ozone layer

Serious health hazard

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Tolerances

Wire
Diameter ±10%
Length +5% / -1%

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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