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Formula: Ho
Form: Pellet/Lump
Material: Holmium
CAS Number: 7440-60-0
Commodity: Metals
Purity: 99%
Maximum Lump Size: 25mm
Hazard Pictogram: GHS02
Holmium Pellets are a form of rare earth metal produced by Goodfellow. With a high magnetic permeability and moderate Curie temperature, these pellets are ideal for use in magnets and magnetic sensors. The high neutron absorption cross-section also makes holmium suitable for control rods in nuclear reactors. As part of Goodfellow's extensive range of rare earth metals, these holmium pellets enable a wide variety of advanced engineering applications.

Flammable

each

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Tolerances

Pellet/Lump
Maximum Lump Size Nominal

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 67
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹¹ 6s²
Valences shown 3
Atomic weight( amu ) 164.9304
Thermal neutron absorption cross-section( Barns ) 65
Atomic radius - Goldschmidt( nm ) 0.176
Ionisation potential( No./eV ) 2/ 11.80
Ionisation potential( No./eV ) 1/ 6.02
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.225
Bulk modulus( GPa ) 40.5
Tensile modulus( GPa ) 66.9
Hardness - Vickers( kgf mm⁻² ) 60
Tensile strength( MPa ) 262
Yield strength( MPa ) 221
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 94@20@20°C
Temperature coefficient( K⁻¹ ) 0.00171@0-100°C
Physical Properties
Element Value
Boiling point( C ) 2695
Density( gcm⁻³ ) 8.803@20°C
Thermal Properties
Element Value
Melting point( C ) 1474
Latent heat of evaporation( J g⁻¹ ) 1695
Latent heat of fusion( J g⁻¹ ) 104
Specific heat( J K⁻¹ kg⁻¹ ) 165@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.2@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 9.5@0-400°C

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