China Cuni Alloy Strip Wire Sheet Cupronickel

Copper Nickel Alloys(Cupro-nickel)
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 752 degrees Fahrenheit.
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

Chemical Composition and Main Property of Cu-Ni Low Resistance AlloyPropertiesGradeCuNi1CuNi2CuNi6CuNi8CuMn3CuNi10Main Chemical CompositionNi1268_10Mn____3_CuBalBalBalBalBalBalMax Continuous Service Temperature(ºC)200200200250200250Resisivity at 20ºC (Ω*mm²/m)0.030.050.10.120.120.15Density(g/cm³)8.98.98.98.98.88.9Thermal Conductivity(αx10-6ºC)<100<120<60<57<38<50Tensile Strength(Mpa)≥210≥220≥250≥270≥290≥290EMF vs Cu(μVºC)(0~1000ºC)-8-12-12-22_-25Approximate Melting Point(ºC)108510901095109710501100Micrographic StructureausteniteausteniteausteniteausteniteausteniteausteniteMagnetic Propertynonnonnonnonnonnon PropertiesGradeCuNi14CuNi19CuNi23CuNi30CuNi34CuNi44Main Chemical CompositionNi141923303444Mn0.30.50.5111CuBalBalBalBalBalBalMax Continuous Service TemperatureºC)300300300350350400Resisivity at 20ºC (Ω*mm²/m)0.20.250.30.350.40.49Density(g/cm³)8.98.98.98.98.98.9Thermal Conductivity(αx10-6ºC)<30<25<16<10<0<-6Tensile Strength(Mpa)≥310≥340≥350≥400≥400≥420EMF vs Cu(μVºC)(0~1000ºC)-28-32-34-37-39-43Approximate Melting Point(ºC)111511351150117011801280Micrographic StructureausteniteausteniteausteniteausteniteausteniteausteniteMagnetic Propertynonnonnonnonnonnon