Cupro Nickel Alloy 294 Constantan Wire 0.018-10mm with 0.49 Ω·mm²/m Resistivity and 400°C Temperature Rating

Price Negotiable

Price: USD 15- 25 KG

MOQ: 20KG

Delivery Time: 7-12 work days

Brand: TANKII

Product Description

Cupro Nickel Alloy 294 Constantan Wire

Constantan wire featuring moderate resistivity with a low temperature coefficient and flat resistance/temperature curve across wide temperature ranges. This copper-nickel alloy offers superior corrosion resistance compared to manganin alloys and is ideal for AC circuits, thermocouples, and precision electrical applications.

Chemical Composition

Element	Content (%)
Nickel (Ni)	44
Manganese (Mn)	1.50
Iron (Fe)	0.5
Copper (Cu)	Balance
Other Elements	Not Detected (ROHS Compliant)

Available Dimensions

Wire: 0.018mm - 10mm diameter
Ribbon: 0.05×0.2mm - 2.0×6.0mm
Strip: 0.5×5.0mm - 5.0×250mm
Bar: 10mm - 100mm

Key Properties

Maximum continuous service temperature: 400°C
Resistivity at 20°C: 0.49 Ω·mm²/m
Density: 8.9 g/cm³
Tensile strength: ≥420 MPa
Non-magnetic austenitic structure
Excellent corrosion resistance

Applications

Electrical resistors and potentiometers
Heating wires, cables, and underground heating mesh
Type J and Type T thermocouples
Braiding and shielding in coaxial and communication cables
Audio/video cables, vehicle signal cables, network cables
Data transmission cables and precision instruments

Technical Specifications

Property	Value
Thermal EMF vs Copper (0-100°C)	-43 μV/°C
Approximate Melting Point	1280°C
Microstructure	Austenite
Magnetic Properties	Non-magnetic

Ordering Information

Minimum order quantities available: 2-3kg for spool wire, 25kg for coil wire. ROHS compliant and available in various international payment terms including T/T and LC.