Cuprothal 294 Copper Nickel Alloy Wire 0.08mm with 0.49 ohm mm²/m Resistivity for Precision Instruments
Price:
Negotiable
MOQ:
20kg
Delivery Time:
Negotiable
Brand:
TANKII
Product Description
Cuprothal 294 Copper Nickel Alloy Wire Overview
Cuprothal 294 is a premium copper-nickel alloy wire with a diameter of 0.08mm, specifically engineered for precision instruments and electrical applications requiring exceptional stability and reliability.
Available Alloy Grades and Forms
We offer comprehensive copper-nickel alloy solutions including Constantan, CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi40 (6J40), and CuNi44 grades.
Available forms include wire, ribbon, strip, and foil to meet diverse industrial requirements.
Constantan (CuNi44) Properties
Constantan (CuNi44) features extremely low temperature coefficient, high electrical resistance (0.49±5% ohm mm²/m), excellent ductility, and superior corrosion resistance. This non-magnetic alloy maintains performance stability at temperatures up to 600°C (1110°F).
Constantan Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 44 |
| Manganese (Mn) | 1.50% |
| Iron (Fe) | 0.5 |
| Silicon (Si) | - |
| Copper (Cu) | Balance |
| ROHS Compliance | Cd, Pb, Hg, Cr: Not Detected |
Constantan Mechanical Properties
| Property | Value |
|---|---|
| Maximum Continuous Service Temperature | 400°C |
| Resistivity at 20°C | 0.49±5% ohm mm²/m |
| Density | 8.9 g/cm³ |
| Melting Point | 1280°C |
| Tensile Strength (Annealed) | 340-535 MPa |
| Tensile Strength (Cold Rolled) | 680-1070 MPa |
| Elongation (Annealed) | ≥25% |
| EMF vs Copper (0-100°C) | -43 μV/°C |
| Micrographic Structure | Austenite |
| Magnetic Property | Non-magnetic |
Applications
- Electrical resistors and potentiometers
- Heating wires, cables, and mats
- Bimetal heating elements
- Thermocouples with high EMF output
- Precision instrumentation components
Available Sizes and Specifications
- Wire diameter: 0.02mm to 1.0mm (spool packaging)
- Wire diameter above 1.0mm: coil packaging
- Rod and bar diameter: 1mm to 30mm
- Strip thickness: 0.01mm to 7mm
- Strip width: 1mm to 280mm
- Available conditions: Bright, Annealed, Soft
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Company
Shanghai Tankii Alloy Material Co.,Ltd
Location
1900 Mudanjiang Road, Baoshan District, 201999, Shanghai, China
Contact Person
Martin Lee