Polyimide-Insulated Platinum/Iridium Alloy Wire (Pt90/Ir10)

Polyimide-Insulated Platinum/Iridium Alloy Wire (Pt90/Ir10) combines the exceptional corrosion resistance, mechanical strength, and biocompatibility of platinum-iridium alloy with the dielectric reliability and thermal stability of polyimide insulation. This makes it indispensable for medical devices, aerospace systems, and high-reliability sensors in extreme environments. Applications include biomedical electrode leads, wiring for deep-space instrumentation, and corrosion-proof electrical connectors in marine systems. In research, it is employed in long-term biocompatibility testing, conductor stability studies in oxidizing environments, and insulation endurance evaluation under thermal stress. The wire’s fusion of metallurgical resilience, electrical reliability, and insulation integrity ensures high performance in both advanced industrial and scientific domains.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Insulated Wire

Conductor Diameter		±10%
Insulation Thickness		Nominal
Length		+5% / -1%

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