Technical Data Sheet
Safety Data Sheet

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

Goodfellow's Platinum/Iridium Alloy Foil (Light Tight) (Pt90/Ir10) is a platinum-iridium foil with a composition of 90% platinum and 10% iridium. This alloy combines platinum's stability and resistance to chemical attack with iridium's hardness and strength. The foil is light tight and has a high reflectivity, making it useful for scientific instruments and industrial applications needing a corrosion resistant, high reflectance surface. Within Goodfellow's range of precious metal foils, the Pt90/Ir10 alloy provides unique properties ideal for mirrors, optical filters, and other specialized components.
Thickness: 2mm
Temper: As Rolled
Length 1: 10mm
Length 2: 10mm
Technical Name: Platinum/Iridium
Formula: Pt90/Ir10
Density: 21.56g/cm³
UOM Code: 408-074-55
SKU: 1000164004
Product Code: PT02-FL-000250
No Minimum order Approx. 2 weeks leadtime Free technical support *Free delivery worldwide
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Technical Data Sheet
Safety Data Sheet

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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
Physical Properties
Element Value
Density( gcm⁻³ ) 21.56
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