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Formula: Ti
Form: Foil (Light Tight)
Material: Titanium
CAS Number: 7440-32-6
Commodity: Metals
Light Tight: Light Tight
Goodfellow provides light-tight titanium foil with a maximum purity of 99.999% (5N), catering to specialized applications requiring protection from light interference while maintaining titanium's superior properties. This unique form of titanium foil is particularly valuable in light-sensitive experiments and in the production of high-performance optical components. Its combination of light-tightness, corrosion resistance, and high strength-to-weight ratio makes it ideal for use in space-based instruments and advanced imaging systems. In research, it's crucial for studies involving photosensitive materials and in the development of new light-shielding technologies. Its potential applications in quantum optics and in the fabrication of next-generation photonic devices highlight its significance in pushing the boundaries of optical and quantum technologies. The ongoing exploration of its use in advanced lithography processes further underscores its importance in both fundamental research and cutting-edge industrial applications.
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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 22
Crystal structure Hexagonal close packed
Electronic structure Ar 3d² 4s²
Valences shown 2,3,4
Atomic weight( amu ) 47.88
Thermal neutron absorption cross-section( Barns ) 6.1
Photo-electric work function( eV ) 4.1
Natural isotope distribution( Mass No./% ) 50/ 5.3
Natural isotope distribution( Mass No./% ) 49/ 5.5
Natural isotope distribution( Mass No./% ) 46/ 8.0
Natural isotope distribution( Mass No./% ) 48/ 73.7
Natural isotope distribution( Mass No./% ) 47/ 7.5
Atomic radius - Goldschmidt( nm ) 0.147
Ionisation potential( No./eV ) 3/ 27.5
Ionisation potential( No./eV ) 4/ 43.3
Ionisation potential( No./eV ) 5/ 99.2
Ionisation potential( No./eV ) 1/ 6.82
Ionisation potential( No./eV ) 2/ 13.6
Ionisation potential( No./eV ) 6/ 119
Mechanical Properties
Element Value
Material condition Polycrystalline
Material condition Annealed
Poisson's ratio 0.361
Poisson's ratio 0.361
Poisson's ratio -
Bulk modulus( GPa ) 108.4
Bulk modulus( GPa ) -
Bulk modulus( GPa ) 108.4
Tensile modulus( GPa ) -
Tensile modulus( GPa ) 120.2
Tensile modulus( GPa ) 120.2
Izod toughness( J m⁻¹ ) 61
Izod toughness( J m⁻¹ ) 61
Hardness - Vickers( kgf mm⁻² ) 60
Hardness - Vickers( kgf mm⁻² ) 60
Tensile strength( MPa ) 230-460
Tensile strength( MPa ) 230-460
Yield strength( MPa ) 140-250
Yield strength( MPa ) 140-250
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 54@20@20°C
Superconductivity critical temperature( K ) 0.4
Temperature coefficient( K⁻¹ ) 0.0038@0-100°C
Physical Properties
Element Value
Boiling point( C ) 3287
Density( gcm⁻³ ) 4.5@20°C
Thermal Properties
Element Value
Melting point( C ) 1660
Latent heat of evaporation( J g⁻¹ ) 8893
Latent heat of fusion( J g⁻¹ ) 365
Specific heat( J K⁻¹ kg⁻¹ ) 523@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 21.9@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.9@0-100°C

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