Constantan wire(CuNi40) wire Size: 0.1mm-8mm Electric heating wire: NI80Cr20, Ni70Cr30, Ni60Cr15, CuNi45, CuNi40, CuNi34 etc. Constantan wire(CuNi40) wireSize: 0.1mm-8mmElectric heating wire: NI80Cr20, Ni70Cr30, Ni60Cr15, CuNi45, CuNi40, CuNi34, CuNi30, CuNi23, CuNi19, CuNi14, CuNi10, CuNi8, CuNi6, CuNi2, CuNi1 etc. Main performance of Ni-Cr and Ni-Cr-Fe electric heating alloys Grade property ...