Constantan® Disk

Constantan® Disk is a precision-engineered form of the copper–nickel alloy renowned for its stable electrical resistivity over a wide temperature range and excellent corrosion resistance. With a nominal composition of 55% copper and 45% nickel, the alloy’s low thermal EMF against copper and consistent resistive behavior make it a preferred material for electrical measurement and calibration applications. Its disk form is ideal for use in strain gauges, resistance standards, and precision shunt resistors. Industries such as aerospace, electronics, and metrology rely on Constantan® Disks for high-accuracy instrumentation, load cells, and thermal sensors. Technologies benefiting from this form include Wheatstone bridge circuits for strain measurement, thermoelectric compensation systems, and specialized resistance networks in laboratory equipment. Advances in microfabrication and thin-disk machining have expanded its role in miniaturized sensing platforms and integrated measurement devices. The combination of electrical stability, machinability, and environmental durability ensures Constantan® Disk’s enduring value in both industrial and research-grade precision applications.