Constantan® Spooled Wire

Constantan® Spooled Wire is a Cu–Ni alloy wire, typically containing ~55% copper and ~45% nickel, optimized for stable electrical resistivity and low thermal coefficient of resistance across a broad temperature range. Supplied in spooled form, it enables continuous feed into automated winding, coiling, or weaving systems, ensuring consistent dimensional quality and mechanical properties. It is widely used in electronics, instrumentation, and industrial sensing, particularly in strain gauges, resistance thermometers, and precision shunt resistors. Specific technologies benefiting from Constantan® Spooled Wire include long-length resistance coils, finely wound sensor elements, and temperature-compensated circuits for precision measurement. Its corrosion resistance and stable resistive behavior under thermal cycling make it a preferred choice in demanding environments. In both research and industry, Constantan® Spooled Wire is valued for enabling high-reliability components that require predictable electrical performance and mechanical integrity over extended operational lifetimes.