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Formula: V
Form: Foil/Film/Sheet
Material: Vanadium
CAS Number: 7440-62-2
Commodity: Metals
Purity: 99.8%
Vanadium Foil enables efficient hydrogen transport, high-temperature gas separation, and superpermeable membrane function under vacuum or inert atmospheres. In laboratory and research environments, its high hydrogen diffusivity supports isotope recovery efforts for fusion energy systems. It is also used as a substrate for catalytic coatings and in thin film deposition within surface engineering and materials science. Vanadium foil is evaluated for its thermal and radiation tolerance in aerospace and nuclear settings. While it is sensitive to oxidation above 600 °C in air, its reliable behavior in controlled conditions makes it suitable for hydrogen diffusion, barrier layer development, and energy system alloy testing.
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Tolerances

Foil/Film/Sheet
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 23
Crystal structure Body centred cubic
Electronic structure Ar 3d³ 4s²
Valences shown 2,3,4,5
Atomic weight( amu ) 50.9415
Thermal neutron absorption cross-section( Barns ) 5.06
Photo-electric work function( eV ) 4.3
Natural isotope distribution( Mass No./% ) 51/ 99.75
Natural isotope distribution( Mass No./% ) 50/ 0.25
Atomic radius - Goldschmidt( nm ) 0.136
Ionisation potential( No./eV ) 3/ 29.3
Ionisation potential( No./eV ) 2/ 14.6
Ionisation potential( No./eV ) 5/ 65.2
Ionisation potential( No./eV ) 6/ 128
Ionisation potential( No./eV ) 1/ 6.74
Ionisation potential( No./eV ) 4/ 46.7
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.365
Poisson's ratio 0.365
Bulk modulus( GPa ) 158
Bulk modulus( GPa ) 158
Tensile modulus( GPa ) 127.6
Tensile modulus( GPa ) 127.6
Izod toughness( J m⁻¹ ) 10-136
Hardness - Vickers( kgf mm⁻² ) 80
Hardness - Vickers( kgf mm⁻² ) 150
Tensile strength( MPa ) 260-585
Tensile strength( MPa ) 530-730
Yield strength( MPa ) 170-450
Yield strength( MPa ) 515-690
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 19.6@20@20°C
Superconductivity critical temperature( K ) 5.4
Temperature coefficient( K⁻¹ ) 0.0039@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.63
Physical Properties
Element Value
Boiling point( C ) 3380
Density( gcm⁻³ ) 6.1@20°C
Thermal Properties
Element Value
Melting point( C ) 1890
Latent heat of evaporation( J g⁻¹ ) 8975
Latent heat of fusion( J g⁻¹ ) 345
Specific heat( J K⁻¹ kg⁻¹ ) 486@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 30.7@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.3@0-100°C

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