Grade: 55.00 Copper, 44.00 Nickel
Shape: Wire, rod, bar
Diameter: 0.03mm-30mm.

Shanghai Tankii Alloy Material Co., Ltd. is specialized in production of Ni-Cr Alloy, Cu-Ni Alloy, Fechral, thermocouple wire, pure nickel and other precision alloy materials in the form of wire, strip, rod, bar and plate.

We've already got ISO9001 quality system certification and ISO14001 environmental protection system. Principally destined for the manufacturing of low temperatures electric resistances so as heating cables, shunts, resistances for automobile, they have a maximum operating temperature of 752F. They do not therefore intervene in the field of resistances for industrial furnaces.

Those are alloys of chemical composition copper + nickel with addition of manganese with a low resistivity (from 231.5 to 23.6 Ohm. Mm2/ft). The most known, CuNi 44 (also called Constantan) presents the advantage of a very low temperature coefficient.

Their advantages are the following:
Very good resistance to corrosion
Very good malleability
Very good solderability.