1,Factory supply with best price
2,Diameter: from0.03mm-0.5mm
3,Used in nonstandard thermocouple
4, TCR: 0.00071
5,Thermal EMF Vs Copper(
µv/C
) : -0.5
6, T.S. Annealed: 490MPa
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.
PtIr 5,PtIr10,PtIr15,PtIr20,PtIr25 resistivity: 0.19-0.33 µOhm.m
Technical Data for Platinum/Iridium wire
Electrical Properties
Electrical resistivity ( µOhm.m ) : 0. 245
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%