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Formula: Pt70/Rh30
Form: Wire
Material: Platinum/Rhodium Alloy
Commodity: Precious Metals
The Platinum/Rhodium Alloy Spooled Wire (Pt70/Rh30) from Goodfellow's wire range is a high-performing alloy with excellent corrosion resistance and high temperature strength. With 70% platinum and 30% rhodium, it combines platinum's chemical inertness with rhodium's hardness and tensile strength. This versatile wire finds use in high-temperature thermocouples and resistance thermometers for its stable electrical properties. It is also valued in the glass industry where its corrosion resistance allows consistent high-quality production of glass containers and fiber.
Tolerances
Wire
| Diameter | ±10% | |
|---|---|---|
| Length | +5% / -1% |
Material Properties for Precious Metals
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 130-238 |
| Elongation at break( % ) | 30 |
| Tensile strength( MPa ) | 460-930 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 18.8 |
| Temperature coefficient( K⁻¹ ) | 0.0014 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1920-1930 |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 17.6 |