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Formula: Sm
Form: Foil (Light Tight)
Material: Samarium
CAS Number: 7440-19-9
Commodity: Metals
Purity: 95%
Temper: As Rolled
Light Tight: Light Tight
Hazard Pictogram: GHS02
Samarium Foil (Light Tight) is a thin metallic foil that blocks light transmission and comes in 3 thicknesses, ranging from 25 to 100 microns. With a silvery-white luster, samarium foil exhibits typical metallic properties like ductility and electrical conductivity. Due to its opacity to light, it can be used as a radiation shield in scientific instruments and as a light barrier in certain electronic components, as well as many other light blocking applications. This feature also allows it to be incorporated into optical filters and spectrometers for selective wavelength blocking.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Flammable

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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 62
Crystal structure Rhombohedral
Electronic structure Xe 4f⁶ 6s²
Valences shown 2,3
Atomic weight( amu ) 150.36
Thermal neutron absorption cross-section( Barns ) 5820
Photo-electric work function( eV ) 2.7
Natural isotope distribution( Mass No./% ) 149/ 13.9
Natural isotope distribution( Mass No./% ) 144/ 3.1
Natural isotope distribution( Mass No./% ) 148/ 11.3
Natural isotope distribution( Mass No./% ) 152/ 26.6
Natural isotope distribution( Mass No./% ) 147/ 15.1
Natural isotope distribution( Mass No./% ) 150/ 7.4
Natural isotope distribution( Mass No./% ) 154/ 22.6
Atomic radius - Goldschmidt( nm ) 0.18
Ionisation potential( No./eV ) 1/ 5.63
Ionisation potential( No./eV ) 2/ 11.07
Mechanical Properties
Element Value
Material condition Polycrystalline
Poisson's ratio 0.31
Bulk modulus( GPa ) 29.9
Tensile modulus( GPa ) 34.1
Tensile strength( MPa ) 124
Yield strength( MPa ) 110
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 92@20@20°C
Temperature coefficient( K⁻¹ ) 0.00148@0-100°C
Physical Properties
Element Value
Boiling point( C ) 1791
Density( gcm⁻³ ) 7.536@20°C
Thermal Properties
Element Value
Melting point( C ) 1077
Latent heat of evaporation( J g⁻¹ ) 1280
Latent heat of fusion( J g⁻¹ ) 72.4
Specific heat( J K⁻¹ kg⁻¹ ) 180@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 13.3@0-100°C

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