Platinum / Iridium Pt 90 / Ir 10 alloy has been used in “non-standard” thermocouples, electrical contacts and for electrodes in medical research. The alloy is harder and mechanically stronger than Platinum.
The key properties of Platinum / Iridium Pt 90 / Ir 10 alloy are tabulated below.
Table 1. Key properties
|Temperature coefficient ( K-1 )
|Electrical resistivity ( µOhm.cm )
|Elongation at break ( % )
|Hardness - Brinell
|Tensile strength ( MPa )
|Density ( g.cm-3 )
|Melting point (°C )
|Coefficient of thermal expansion ( x10-6 K-1 )
||8.7 @ 20-100 °C
|Thermal conductivity ( W.m-1.K-1 )
||31 @ 23 °C
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