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Formula: Lu
Form: Pellet/Lump
Material: Lutetium
CAS Number: 7439-94-3
Commodity: Metals
Purity: 99.9%
Maximum Lump Size: 25mm
Hazard Pictogram: GHS02
Goodfellow offers lutetium pellets in their range of metal products. Lutetium is a silvery-white metal that is both malleable and ductile. With a high melting point of 1652°C, lutetium maintains its strength at high temperatures. The high neutron absorption cross section of lutetium makes it useful for control rods in nuclear reactors. Lutetium's phosphorescent properties also allow it to be used in detector applications and phosphor thermometers. Overall, Goodfellow's lutetium pellets showcase the unique properties and versatility of this rare earth metal across scientific and industrial applications.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

each

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Tolerances

Pellet/Lump
Maximum Lump Size Nominal

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 71
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹⁴ 5d¹ 6s²
Valences shown 3
Atomic weight( amu ) 174.967
Thermal neutron absorption cross-section( Barns ) 75
Photo-electric work function( eV ) 3.3
Natural isotope distribution( Mass No./% ) 175/ 97.4
Natural isotope distribution( Mass No./% ) 176/ 2.6
Atomic radius - Goldschmidt( nm ) 0.173
Ionisation potential( No./eV ) 1/ 5.43
Ionisation potential( No./eV ) 2/ 13.9
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.223
Bulk modulus( GPa ) 42
Tensile modulus( GPa ) 84
Hardness - Vickers( kgf mm⁻² ) 85
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 68@20@20°C
Superconductivity critical temperature( K ) 0.1
Temperature coefficient( K⁻¹ ) 0.0024@0-100°C
Physical Properties
Element Value
Boiling point( C ) 3395
Density( gcm⁻³ ) 9.842@20°C
Thermal Properties
Element Value
Melting point( C ) 1663
Latent heat of evaporation( J g⁻¹ ) 2155
Latent heat of fusion( J g⁻¹ ) 110
Specific heat( J K⁻¹ kg⁻¹ ) 155@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.4@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 12.5@0-400°C

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