Constantan wire (without enamel) 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 enamel) – the ideal resistance wire for DIY, technology & lab

This constantan wire is made of CuNi44 (2.0842), a proven copper-nickel alloy with a constant electrical resistance—even at rising temperatures. Since the wire is not enamel-coated, it is especially suitable for applications where direct electrical contact or high temperatures are required.

Benefits at a glance:

• Constant resistance at varying temperatures
• Heat-resistant up to approx. 600°C
• No enamel—ideal for open heating coils or metallic contacts
• Easy to bend, process, and solder
• Perfect for electronics hobbyists, workshops, and experiments

Typical applications:

• Heating wires, resistance elements
• Electronics experiments and DIY projects
• Model making, thermal sensor technology
• Training, labs, and school experiments

Delivery:

• By the meter or on a spool, in different diameters—ready to use directly for your project!