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Formula: Mo
Form: Foil/Film/Sheet
Material: Molybdenum
CAS Number: 7439-98-7
Commodity: Metals
Purity: 99.9%
Molybdenum Foil is a high-purity, corrosion-resistant material, ideal for high-temperature applications in controlled atmospheres (inert or vacuum). In laboratories, it is commonly used as a support in catalysis, particularly for hydrogenation reactions with platinum or nickel catalysts, and in its sulfide form (MoS₂). Mo foil is also employed in chemical vapor deposition (CVD) processes, though it can undergo carburization in hydrocarbon-rich environments above 800°C. While Mo foil is used in electron microscopy as a TEM grid, it can react with electron beams at high doses, affecting its stability. Due to its strength, thermal conductivity, and resistance to heat, Mo foil is widely used in aerospace components, thin-film deposition, and high-temperature research, where precise material performance is required.
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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 42
Crystal structure Body centred cubic
Electronic structure Kr 4d⁵ 5s¹
Valences shown 2, 3, 4, 5, 6
Atomic weight( amu ) 95.94
Thermal neutron absorption cross-section( Barns ) 2.65
Photo-electric work function( eV ) 4.2
Natural isotope distribution( Mass No./% ) 95/ 15.9
Natural isotope distribution( Mass No./% ) 96/ 16.7
Natural isotope distribution( Mass No./% ) 98/ 24.1
Natural isotope distribution( Mass No./% ) 97/ 9.6
Natural isotope distribution( Mass No./% ) 92/ 14.8
Natural isotope distribution( Mass No./% ) 94/ 9.3
Natural isotope distribution( Mass No./% ) 100/ 9.6
Atomic radius - Goldschmidt( nm ) 0.14
Ionisation potential( No./eV ) 2/ 16.15
Ionisation potential( No./eV ) 5/ 61.2
Ionisation potential( No./eV ) 68
Ionisation potential( No./eV ) 1/ 7.10
Ionisation potential( No./eV ) 3/ 27.2
Ionisation potential( No./eV ) 4/ 46.4
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.293
Poisson's ratio 0.293
Bulk modulus( GPa ) 261.2
Bulk modulus( GPa ) 261.2
Tensile modulus( GPa ) 324.8
Tensile modulus( GPa ) 324.8
Hardness - Vickers( kgf mm⁻² ) 250
Hardness - Vickers( kgf mm⁻² ) 200
Tensile strength( MPa ) 485-550
Tensile strength( MPa ) 620-690
Yield strength( MPa ) 550
Yield strength( MPa ) 415-450
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 5.7@20@20°C
Superconductivity critical temperature( K ) 0.915
Temperature coefficient( K⁻¹ ) 0.00435@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 1.45
Physical Properties
Element Value
Boiling point( C ) 4612
Density( gcm⁻³ ) 10.22@20°C
Thermal Properties
Element Value
Melting point( C ) 2617
Latent heat of evaporation( J g⁻¹ ) 6153
Latent heat of fusion( J g⁻¹ ) 290
Specific heat( J K⁻¹ kg⁻¹ ) 251@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 138@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 5.1@0-100°C

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