Constantan Wire (without Varnish) Ø0.2-2mm UNS C72150 Resistance Wire 2.0842 CuNi44 Heating Wire 1-500 Meters

Length Tolerance +/-2mm

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Constantan wire CuNi44 (without varnish) – the ideal resistance wire for DIY, technology & laboratory

This constantan wire is made of CuNi44 (2.0842), a proven copper-nickel alloy with constant electrical resistance – even at rising temperatures. Since the wire is not varnished, it is particularly suitable for applications requiring direct electrical contacts or high temperatures.

Advantages at a glance:

• Constant resistance at varying temperatures
• Heat resistant up to approx. 600°C
• No varnish – ideal for open heating coils or metallic contacts
• Easy to bend, process, and solder
• Perfect for tech enthusiasts, workshops, and experiments

Typical applications:

• Heating wires, resistance elements
• Electronics experiments and DIY projects
• Model making, thermo-sensor technology
• Education, laboratory, and school experiments

Delivery:

• Available by meter or on spool, in various diameters – ready for your project!