constantan
alloy
Quick Summary
Constantan is an alloy primarily composed of copper and nickel. Specifically, it typically contains 55% copper and 45% nickel. This alloy is notable for its high electrical resistance, which remains remarkably stable across a wide range of temperatures. Due to this consistent resistance, constantan is widely used in electrical applications such as resistors, thermocouples, and rheostats. It was first used for electrical resistors around 1903.123
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