Alloys: Constantan
Constantan is an alloy that is usually—but not necessarily—around 55% copper and 45% nickel. It was discovered in the late 1800s in Germany by Edward Weston and has remained popular because of its electrical resistance, namely that the resistivity remains constant over a wide range of temperatures. Because of this, constantan is often used in thermocouples, as well as in precision electrical instruments, such as resistors and strain gauges.
Sources/Further Reading: (Image 1—Advent Research Materials) (Image 2—Wikipedia) (Image 3—Material Properties) (NBS) (Nuclear Power)















