Cumin 11 is a copper-based alloy with additions of manganese and nickel, with a very low EMF against copper. Particularly suited for DC circuitry with its low-temperature coefficient.
A low density reduces weight requirements. Excellent use in custom-made thermocouple applications. Also for electric resistance standards, precision wire wound resistors etc.
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physical and mechanical properties
| Units | ||
|---|---|---|
| Maximum continuous operating temperature in air | °C | 850 |
| Nominal composition | % |
Ni 4 Mn 11 Cu Bal. |
| Density at 20°C | g/cm³ | 8.4 |
| Resistivity at 20°C | µΩcm | 43 |
| Thermal conductivity at 20°C | W/mK | 22 |
| Specific heat capacity at 20°C | kJ/kgK | 0.41 |
| Melting point (approx.) | °C | 1020 |
| Tensile strength Rm, 1 mm wire – annealed | N/mm² | 390 |
| Elongation at break, 1 mm wire - annealed | % | 30 |
temperature dependant factors
Reference temperature 20°C
| Temp °C | 15-35 | |
| Temp °F | 59 - 35 | |
| Resistivity Factor | 0 ± 15 | |
| Coefficient of thermal expansion (10^6/K) | 11 | |
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.