Definitions for "constantan"
a copper-nickel alloy composed of approximately 55 per cent copper and 45 per cent nickel, with high electrical resistance and a low temperature coefficient; it is used as resistance wire and in thermocouples.
A type of special thermocouple metal used on Type-E, Chromel/Constantan thermocouples. It is non magnetic.
An alloy of nickel and copper use in thermocouples.