CuNiCopper Nickel Alloy Resistor 0.10mm-10.00mm Constantan Heating Resistance Wire
Brand Name:TANKII
Certification:9001
Model Number:Constantan
Minimum Order Quantity:10 KG
Delivery Time:7-20 days
Payment Terms:L/C, T/T, Western Union
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Shanghai Shanghai China
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1900 Mudanjiang Road, Baoshan District, 201999, Shanghai, China
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Constantan is a copper-nickel alloy that is widely used in various applications, particularly for its electrical and thermal properties. Here are some key details about constantan wire:
Composition:
- Constantan is typically composed of approximately 55% copper and 45% nickel.
- The precise copper-nickel ratio can vary slightly depending on the specific alloy composition.
Electrical Properties:
- Constantan has a high electrical resistivity, making it suitable for use in resistors, thermocouple wires, and resistance temperature detectors (RTDs).
- It has a low and stable temperature coefficient of resistance, which is an important property for applications where precise resistance measurement is required.
Thermal Properties:
- Constantan has a relatively low thermal conductivity compared to pure copper, which makes it useful for applications where thermal isolation is needed.
- It also has a high Seebeck coefficient, making it a popular choice for thermocouple applications where the generation of a thermoelectric voltage is desired.
Applications:
- Thermocouple wires: Constantan is commonly used as one of the two wires in Type T (copper-constantan) thermocouples, which are widely used in temperature measurement applications.
- Resistors: Constantan wire is used to make precision resistors due to its stable electrical resistance.
- Strain gauges: Constantan's electrical resistance change under stress makes it suitable for use in strain gauge applications.
- Electrical components: Constantan wire is used in various electrical components, such as potentiometers and rheostats.
Constantan wire is available in a range of diameters and is commonly used in various industrial, scientific, and engineering applications that require its unique electrical and thermal properties.
Copper nickel alloy
| Main property | Cuni1 | CuNI2 | CuNI6 | CuNI10 | CuNi19 | CuNi23 | CuNi30 | CuNi34 | CuNI44 | |
| Main chemical composition | Ni | 1 | 2 | 6 | 10 | 19 | 23 | 30 | 34 | 44 |
| MN | / | / | / | / | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 | |
| CU | rest | rest | rest | rest | rest | rest | rest | rest | rest | |
| max working Temperature °c | / | 200 | 220 | 250 | 300 | 300 | 350 | 350 | 400 | |
| Density g/cm3 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | |
| Resistivity at 20 °c | 0.03 ± 10% | 0.05 ±10% | 0.1 ±10% | 0.15 ±10% | 0.25 ±5% | 0.3 ±5% | 0.35 ±5% | 0.40 ±5% | 0.49 ±5% | |
| Temperature coefficient of Resistance | <100 | <120 | <60 | <50 | <25 | <16 | <10 | -0 | <-6 | |
| Tensile strength Mpa | >210 | >220 | >250 | >290 | >340 | >350 | >400 | >400 | >420 | |
| elongation | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | |
| Melting point °c | 1085 | 1090 | 1095 | 1100 | 1135 | 1150 | 1170 | 1180 | 1280 | |
| coefficient of conductivity | 145 | 130 | 92 | 59 | 38 | 33 | 27 | 25 | 23 | |
CuNiCopper Nickel Alloy Resistor 0.10mm-10.00mm Constantan Heating Resistance Wire
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