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Formula: Sc
Form: Foil (Light Tight)
Material: Scandium
CAS Number: 7440-20-2
Commodity: Metals
Purity: 99%
Temper: As Rolled
Light Tight: Light Tight
Scandium Foil (Light Tight) is a foil product from Goodfellow's range of high purity metals and alloys. Scandium foil is known for its light weight and corrosion resistance. The scandium foil is ultra-thin at under 0.1 mm yet remains very strong. Key applications of scandium foil include high-end electronics, aerospace components, and lighting products. With the scandium foil being opaque even down to nanometer thicknesses, it enables light blocking in sensitive scientific instruments and thin film deposition systems requiring complete darkness. Overall, the Scandium Foil (Light Tight) product exemplifies Goodfellow's capabilities in specialty metal foils.
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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 21
Crystal structure Hexagonal close packed
Electronic structure Ar 3d¹ 4s²
Valences shown 3
Atomic weight( amu ) 44.9559
Thermal neutron absorption cross-section( Barns ) 25
Photo-electric work function( eV ) 3.5
Atomic radius - Goldschmidt( nm ) 0.16
Ionisation potential( No./eV ) 3/ 24.8
Ionisation potential( No./eV ) 5/ 91.7
Ionisation potential( No./eV ) 4/ 73.5
Ionisation potential( No./eV ) 6/ 111
Ionisation potential( No./eV ) 1/ 6.54
Ionisation potential( No./eV ) 2/ 12.8
Mechanical Properties
Element Value
Hardness - Brinell 78
Hardness - Brinell 136
Material condition Soft
Material condition Hard
Poisson's ratio 0.27
Poisson's ratio 0.27
Bulk modulus( GPa ) 44.2
Bulk modulus( GPa ) 44.2
Tensile modulus( GPa ) 79.3
Tensile modulus( GPa ) 79.3
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 66@20@20°C
Temperature coefficient( K⁻¹ ) 0.00282@0-100°C
Physical Properties
Element Value
Boiling point( C ) 2831
Density( gcm⁻³ ) 2.99@20°C
Thermal Properties
Element Value
Melting point( C ) 1541
Latent heat of evaporation( J g⁻¹ ) 7293
Latent heat of fusion( J g⁻¹ ) 357
Specific heat( J K⁻¹ kg⁻¹ ) 557@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 15.8@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 12@0-100°C

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