Question

What is the resistivity of Constantan???

Answer 1

Constantan is a copper–nickel alloy also known as Eureka, Advance, and Ferry. It usually consists of 55% copper and 45% nickel. Its main feature is its resistivity, which is constant over a wide range of temperatures. Other alloys with similarly low temperature coefficients are known, such as manganin (Cu86Mn12Ni2).

Surface resistivity: 0.49 μΩ·m

Melting temperature (Tm): 1210° C

Young's modulus (E): 162 GPa (24 Mpsi)

Thermal conductivity (k): 21.2W/m· K