Description

The alloy has been used in "nonstandard" thermocouples, electrical contacts and for electrodes in medical research. The alloy is harder and mechanically stronger than Platinum.

This wire features a 90% Platinum and 10% Iridium composition and is widely used in the assembly of microelectrode probes. Iridium, a Platinum group metal, is very dense and hard, imparting added strength to the wire.

Technical Data for Platinum/Iridium wire

Electrical Properties

Electrical resistivity ( µOhmcm ): 25

Temperature coefficient ( K-1 ): 0.0013

Mechanical Properties

Elongation at break ( % ) <25

Hardness - Brinell 130-190

Tensile strength ( MPa )380-620

Physical Properties

Density ( g cm-3 )21.56

Melting point ( C )1800

Thermal Properties

Coefficient of thermal expansion @20-100C ( x10-6 K-1 )8.7

Thermal conductivity @23C ( W m-1 K-1 )31

Typical Analysis : (ppm)

Ag 100, Au 75, Cu 50, Fe 250, Ir 10%, Ni <100, Si <50, Pt balance.

Tolerances

Wire diameter: ±10%

Length:+5% / -1%