Platinum/Iridium Alloy Disk (Pt90/Ir10)

Platinum Iridium Alloy Disk (Pt90/Ir10) combines platinum’s corrosion resistance and catalytic performance with iridium’s hardness and high-temperature stability in a precision-machined circular format. This geometry provides uniform surface exposure, making it ideal for use in medical device components, electrochemical electrodes, and high-accuracy measurement instruments. Industries employ these disks in implantable sensors, fuel cell testing assemblies, and aerospace instrumentation requiring stable electrical contact under thermal stress. Research applications include thin-layer electrochemical studies, catalyst lifetime analysis, and the fabrication of reference electrodes for analytical chemistry. The disk’s consistent geometry and alloy’s synergistic properties enable precise, reproducible performance in both industrial and scientific contexts where reliability under demanding operational conditions is critical.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Disc

Thickness	>0.05mm	±10%
Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%

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