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Formula: Ta 97.5/W 2.5
Form: Foil (Light Tight)
Material: Tantalum/Tungsten
Commodity: Alloys
Temper:
As Rolled
Light Tight:
Light Tight
Tantalum Tungsten Alloy Foil Light Tight (Ta97.5/W2.5) combines the high corrosion resistance and ductility of tantalum with the strength and heat tolerance of tungsten in a light-tight format that is completely free of pinholes, ensuring total light exclusion. Its thin yet robust profile is suited for demanding applications such as optical isolation barriers, high-temperature shielding, and vacuum-compatible membrane structures. This alloy’s stability under aggressive chemical and thermal conditions makes it valuable in aerospace optics, semiconductor processing, and high-precision instrumentation. Research applications include thin-film photonics experiments, corrosion-resistant coating development, and advanced energy system prototyping. The synergy of alloy performance and light-tight structural integrity ensures consistent results in extreme laboratory and industrial environments.
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 |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 16.66 |
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