Technical Data Sheet
Safety Data Sheet

Tantalum Foil

Tantalum Foil is a thin foil of tantalum metal produced by Goodfellow. With over 359 variations, this foil offers a wide range of thicknesses, widths, and lengths to suit many applications. Tantalum is known for its high melting point, excellent corrosion resistance and good ductility. Tantalum foil is used in electronics as capacitors and high-temperature heating elements. It is also used to make chemical process equipment like heat exchangers and corrosion-resistant piping. The combination of properties and availability in various dimensions makes Tantalum Foil a versatile material for high heat and chemical resistance across industries.
Percentage Purity: 99.9%
Thickness: 0.075mm
Temper: Annealed
Length 1: 150mm
Length 2: 150mm
Technical Name: Tantalum
Formula: Ta
Density: 16.6g/cm³
CAS Number: 7440-25-7
UOM Code: 222-164-02
SKU: 1000092432
Product Code: TA00-FL-000184


Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
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Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Metals

Atomic Properties
Element Value
Atomic number 73
Crystal structure Body centred cubic
Electronic structure Xe 4f¹⁴ 5d³ 6s²
Valences shown 2,3,4,5
Atomic weight( amu ) 180.9479
Thermal neutron absorption cross-section( Barns ) 22
Photo-electric work function( eV ) 4.1
Natural isotope distribution( Mass No./% ) 180/ 0.012
Natural isotope distribution( Mass No./% ) 181/ 99.988
Atomic radius - Goldschmidt( nm ) 0.147
Ionisation potential( No./eV ) 1/ 7.88
Ionisation potential( No./eV ) 2/ 16.2
Mechanical Properties
Element Value
Material condition Hard
Material condition Soft
Poisson's ratio 0.342
Poisson's ratio 0.342
Bulk modulus( GPa ) 196.3
Bulk modulus( GPa ) 196.3
Tensile modulus( GPa ) 185.7
Tensile modulus( GPa ) 185.7
Hardness - Vickers( kgf mm⁻² ) 200
Hardness - Vickers( kgf mm⁻² ) 90
Tensile strength( MPa ) 760
Tensile strength( MPa ) 172-207
Yield strength( MPa ) 705
Yield strength( MPa ) 310-380
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 13.5@20@20°C
Superconductivity critical temperature( K ) 4.47
Temperature coefficient( K⁻¹ ) 0.0035@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.33
Physical Properties
Element Value
Boiling point( C ) 5425
Density( gcm⁻³ ) 16.6@20°C
Thermal Properties
Element Value
Melting point( C ) 2996
Latent heat of evaporation( J g⁻¹ ) 4165
Latent heat of fusion( J g⁻¹ ) 174
Specific heat( J K⁻¹ kg⁻¹ ) 140@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 57.5@0-100
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 6.5@0-100°C
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