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Hafnium Pellets

Hafnium pellets are part of Goodfellow's range of metals and alloys available in pellet form. Hafnium has a very high melting point of 2233°C and is resistant to concentrated alkalis. Its properties make hafnium suitable for applications such as control rods and shielding in nuclear reactors. The high neutron absorption cross section of hafnium allows it to control nuclear activity. Additionally, hafnium's hardness and strength at high temperatures are utilized in rocket engine nozzles and other high-temperature applications. With its unique properties, hafnium pellets from Goodfellow enable critical applications in nuclear and high-temperature technologies.
Type: Sponge
Weight: 20g
Technical Name: Hafnium
Formula: Hf
Percentage Purity: 97%
Density: 13.1g/cm³
CAS Number: 7440-58-6
Maximum Lump Size: 10mm
UOM Code: 443-815-05
SKU: 1000118004
Product Code: HF00-LP-000100

Tolerances

Pellets
Maximum Lump Size Nominal
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Tolerances

Pellets
Maximum Lump Size Nominal
Technical Data Sheet
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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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