Tantalum/Tungsten Alloy Foil (Light Tight) (Ta97.5/W 2.5)

Formula: Ta 97.5/W 2.5

Form: Foil (Light Tight)

Material: Tantalum/Tungsten Alloy

Commodity: Alloys

Temper: As Rolled

Light Tight: Light Tight

Tantalum/Tungsten Alloy Foil (Light Tight) (Ta97.5/W 2.5) is a foil product within Goodfellow's range of tantalum and tungsten metal alloy foils. This alloy combines the corrosion resistance and high temperature strength of tantalum with the high density and stiffness of tungsten. Applications of this light-tight foil include x-ray collimators to shape or limit x-ray beams, as well as high temperature furnace components thanks to its refractory properties. With excellent ductility, this foil can be readily formed into complex shapes while blocking visible light.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

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Material Properties for Alloys

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