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Formula: Pt 75/Ir 25
Form: Rod
Material: Platinum/Iridium Alloy
Commodity: Precious Metals
Diameter:
2.9mm
Temper:
As Drawn
Goodfellow's range of platinum/iridium alloy rods includes Pt75/Ir25, a high-temperature resistant material composed of 75% platinum and 25% iridium. This alloy combines platinum's excellent corrosion resistance and high-temperature strength with iridium's hardness and wear resistance. With a melting point over 2000°C, Pt75/Ir25 rods maintain mechanical strength and oxidation resistance in extreme environments. Common applications include thermocouple wires, electrical contacts, crucibles, and high-temperature furnace components where durability at high temperatures is critical. As part of Goodfellow's selection of platinum/iridium alloy rods, Pt75/Ir25 provides an optimal balance of properties for demanding high-temperature applications.
Tolerances
Rod
| Diameter | =<10mm | ±10% |
|---|---|---|
| Diameter | >10mm | ±5% |
Material Properties for Precious Metals
Mechanical Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | 20 |
| Modulus of elasticity( GPa ) | 218-220 |
| Hardness - Vickers( kgf mm⁻² ) | 230-240 |
| Tensile strength( MPa ) | 860-1500 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 31-32 |
| Temperature coefficient( K⁻¹ ) | 0.001 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1820-2133 |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 21.7 |
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