Platinum/Iridium Alloy Foil (Light Tight) (Pt90/Ir10)

Platinum Iridium Alloy Foil Light Tight (Pt90/Ir10) combines exceptional corrosion resistance, mechanical strength, and stability at elevated temperatures with a pinhole-free structure to ensure total light exclusion. This makes it indispensable in high-vacuum optical systems, radiation shielding for sensors, and precision photolithography. Industries rely on it for electron beam equipment components, optical device isolation layers, and protective sheaths for light-sensitive electronics. Research uses include development of photonic test environments, creation of defect-free reflective surfaces, and shielding for spectroscopy equipment. The integration of platinum’s noble metal resilience and iridium’s hardening effect with a flawlessly light-tight foil format delivers exceptional durability, optical integrity, and stability for advanced scientific and engineering applications.

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Properties

Reference & Citations

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Material Properties for Precious Metals

Mechanical Properties

Element	Value
Hardness - Brinell	130-190
Elongation at break( % )	<25
Tensile strength( MPa )	380-620

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	25
Temperature coefficient( K⁻¹ )	0.0013

Thermal Properties

Element	Value
Melting point( C )	1800
Thermal conductivity( W m⁻¹ K⁻¹ )	31@23
Thermal conductivity( W m⁻¹ K⁻¹ )	31@23C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	8.7@20-100°C