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Formula: Hf
Form: Powder
Material: Hafnium
CAS Number: 7440-58-6
Commodity: Metals
Purity: 95%
Max Particle Size: 45μm
Hazard Pictogram: GHS02
Hafnium Powder is a form of elemental hafnium in powder form. It’s available in 9 variations, with particle sizes ranging from 1 to 45 microns. Hafnium is a lustrous, silvery-gray transition metal that is corrosion resistant and chemically similar to zirconium. Hafnium powder is used in filaments, electrodes, semiconductor fabrication, and as a neutron absorber in nuclear control rods due to its high neutron absorption cross-section. With its refractory properties, Hafnium Powder is also used in superalloys for aerospace applications.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

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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 72
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹⁴ 5d² 6s²
Valences shown 4
Atomic weight( amu ) 178.49
Thermal neutron absorption cross-section( Barns ) 103
Photo-electric work function( eV ) 3.9
Natural isotope distribution( Mass No./% ) 179/ 13.8
Natural isotope distribution( Mass No./% ) 176/ 5.2
Natural isotope distribution( Mass No./% ) 180/ 35.2
Natural isotope distribution( Mass No./% ) 174/ 0.2
Natural isotope distribution( Mass No./% ) 177/ 18.5
Natural isotope distribution( Mass No./% ) 178/ 27.1
Atomic radius - Goldschmidt( nm ) 0.159
Ionisation potential( No./eV ) 3/ 23.3
Ionisation potential( No./eV ) 1/ 7.0
Ionisation potential( No./eV ) 2/ 14.9
Ionisation potential( No./eV ) 4/ 33.3
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.26
Poisson's ratio 0.26
Bulk modulus( GPa ) 109
Bulk modulus( GPa ) 109
Tensile modulus( GPa ) 141
Tensile modulus( GPa ) 141
Hardness - Vickers( kgf mm⁻² ) 150-180
Tensile strength( MPa ) 445
Tensile strength( MPa ) 745
Yield strength( MPa ) 365
Yield strength( MPa ) 240
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 32.2@20@20°C
Superconductivity critical temperature( K ) 0.128
Temperature coefficient( K⁻¹ ) 0.0044@0-100°C
Physical Properties
Element Value
Boiling point( C ) 4602
Density( gcm⁻³ ) 13.1@20°C
Thermal Properties
Element Value
Melting point( C ) 2227
Latent heat of evaporation( J g⁻¹ ) 3700
Latent heat of fusion( J g⁻¹ ) 122
Specific heat( J K⁻¹ kg⁻¹ ) 146@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 23@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 6@0-100°C

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