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Tantalum/Tungsten Alloy Foil (Ta97.5/W2.5)

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Commodity: Alloys Material: Tantalum/Tungsten Form: Foil/Film/Sheet Composition: Ta 97.5/W 2.5 Temper: As Rolled
Tantalum Tungsten Alloy Foil (Ta97.5/W2.5) delivers outstanding resistance to corrosion, excellent ductility, and enhanced thermal stability in a thin metallic sheet engineered for high-performance environments. The tungsten addition increases strength and creep resistance without sacrificing formability, enabling use in high-temperature seals, precision shims, and chemically inert linings in demanding aerospace, semiconductor, and chemical processing systems. It is valued in applications such as furnace insulation barriers, corrosion-resistant diaphragms, and as a base layer in advanced coating technologies. In research, Ta97.5/W2.5 foil is used for thin-film deposition substrates, electrochemical electrode fabrication, and structural materials testing under extreme conditions. This alloy’s synergy of toughness, thermal endurance, and chemical stability in foil form makes it a reliable choice for both industrial and scientific innovation.
Starting at $79.00 each
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Material Properties

Mechanical Properties
Element Value
Elongation at break( % ) <20
Modulus of elasticity( GPa ) 186
Hardness - Vickers( kgf mm⁻² ) 115-160
Tensile strength( MPa ) 240-310
Thermal Properties
Element Value
Melting point( C ) 3014
Specific heat( J K⁻¹ kg⁻¹ ) 141@23°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 55@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 6.48@20-500°C
Physical Properties
Element Value
Density( gcm⁻³ ) 16.66
each

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Available Configurations

Properties common to all products in this list

Commodity: Alloys Material: Tantalum/Tungsten Form: Foil Composition: Ta 97.5/W 2.5 Temper: As Rolled

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Tolerances

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