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Thulium Foil (Light Tight)

Available Configurations

Properties common to all products in this list

Commodity: Metals Material: Thulium Form: Foil (Light Tight) Composition: Tm CAS Number: 7440-30-4 Purity: 99% Temper: As Rolled Opacity: Light Tight
Thulium Foil Light Tight combines the optical and magnetic properties of thulium with complete light-blocking capability, making it ideal for environments where light exclusion is critical. Its unique optical emissions in the near-infrared and blue ranges allow for specialized use in photonics while the light-tight characteristic ensures precision in sensitive optical and laser systems. Industries such as defense optics, precision metrology, and high-resolution imaging employ this foil in optical isolation layers, light-blocking barriers for instrumentation, and protective enclosures for laser components. Specific applications include IR calibration systems, beam-shaping modules, and photonic experiments requiring strict light control. This combination of functional material properties and physical light exclusion makes it highly valuable in both industrial manufacturing and cutting-edge research contexts.

Flammable

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Material Properties

Atomic Properties
Element Value
Atomic number 69
Crystal structure Hexagonal close packed
Electronic structure Xe 4f¹³ 6s²
Valences shown 2,3
Atomic weight( amu ) 168.9342
Thermal neutron absorption cross-section( Barns ) 115
Atomic radius - Goldschmidt( nm ) 0.174
Ionisation potential( No./eV ) 1/ 6.18
Ionisation potential( No./eV ) 3/ 23.71
Ionisation potential( No./eV ) 2/ 12.05
Mechanical Properties
Element Value
Hardness - Brinell 53
Material condition Polycrystalline
Poisson's ratio 0.235
Bulk modulus( GPa ) 40.5
Tensile modulus( GPa ) 76
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 90@20°C
Temperature coefficient( K⁻¹ ) 0.00195@0-100°C
Physical Properties
Element Value
Boiling point( C ) 1947
Density( gcm⁻³ ) 9.322@25°C
Thermal Properties
Element Value
Melting point( C ) 1545
Latent heat of evaporation( J g⁻¹ ) 1456
Latent heat of fusion( J g⁻¹ ) 109
Specific heat( J K⁻¹ kg⁻¹ ) 160@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 16.9@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 11.6@0-400°C
each

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Available Configurations

Properties common to all products in this list

Commodity: Metals Material: Thulium Form: Foil (Light Tight) Composition: Tm CAS Number: 7440-30-4 Purity: 99% Temper: As Rolled Opacity: Light Tight

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Tolerances

Foil (Light Tight)
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Linear dimension <100mm ±1mm
Linear dimension >=100mm +2 / -1%