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Formula: Ho
Form: Powder
Material: Holmium
CAS Number: 7440-60-0
Commodity: Metals
Purity: 99.9%
Max Particle Size: 500μm
Hazard Pictogram: GHS02
Holmium Powder is a highly magnetic rare earth metal powder available as part of our range of metal powders. With high permeability and moderate magnetization, it’s utilized in magnets as well as optical filters.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

each

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Tolerances

Powder
Mean Particle Size Nominal
Minimum Particle Size Nominal
Maximum Particle Size Nominal
Maximum Particle Size Nominal
Particle Size D10 Nominal
Particle Size D50 Nominal
Particle Size D90 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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