Cupronic 2.5 is a copper-based resistance alloy with enhanced anti-corrosion properties. It has very low resistivity and is suitable for use in lower temperature applications.
It is available in solid, stranded or bunched constructions down to a wire size of 0.08mm. Cupronic 2.5 is particularly useful in low-temperature heating applications such as underfloor heating and blanket wires.
Cupronic should not be confused with the Thermocouple Compensating alloy Cupronic 12 which has a different chemical composition and resistivity.
Physical and Mechanical Properties
| | Units | |
|---|---|---|
| Nominal composition | % | Cu 99 |
| 1Ni | ||
| Density at 20°C | g/cm³ | 8.9 |
| Resistivity at 20°C | µΩcm | 2.5 |
| Temperature Coefficient of Resistance, 20 – 100°C | 1/K | 0.003 |
| Coefficient of thermal expansion, 20 – 100°C | 1/K | 17 x 10^6 |
| Thermal conductivity at 20°C | W/mK | 200 |
| Specific Heat Capacity at 20°C | kJ/kgK | 0.38 |
| Melting point (approx.) | °C | 1080 |
| Tensile strength Rm(0.5mm wire) | N/mm² | 220 |
The figures given in these tables represent nominal or typical values.
Information contained within this technical data sheet is based upon the general experience of Scott Precision Wire Ltd and is believed to be correct at the time of issue.
No warranty is given or is to be implied from the details above.
Customers are advised to carry out independent tests in order to determine the suitability of any Scott Precision Wire Ltd product for an application.