China Top Quality Constanstan

TOP quality constanstan(CuNi44)
Grade: CuNi44,it is also called Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45,Neutrology, Advance, CuNi 102, Cu-Ni 44, Constantan
CuNi series:
CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi44.
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(º C)200200200250200250Resisivity at 2º C (Ω mm2/m)0.030.050.10.120.120.15Density(g/cm3)8.98.98.98.98.88.9Thermal Conductivity(α x 10-6º C)< 100< 120< 60< 57< 38< 50Tensile Strength(Mpa)≥ 210≥ 220≥ 250≥ 270≥ 290≥ 290EMF vs Cu(μ Vº C)(0~10º C)-8-12-12-22_-25Approximate Melting Point(º C)108510901095109710501100Micrographic StructureausteniteausteniteausteniteausteniteausteniteausteniteMagnetic Propertynonnonnonnonnonnon PropertiesGradeCuNi14CuNi19CuNi23CuNi30CuNi34CuNi44Main Chemical CompositionNi141923303444Mn0.30.50.5111CuBalBalBalBalBalBalMax Continuous Service Temperatureº C)300300300350350400Resisivity at 2º C (Ω mm2/m)0.20.250.30.350.40.49Density(g/cm3)8.98.98.98.98.98.9Thermal Conductivity(α x 10-6º C)< 30< 25< 16< 10< 0< -6Tensile Strength(Mpa)≥ 310≥ 340≥ 350≥ 400≥ 400≥ 420EMF vs Cu(μ Vº C)(0~10º C)-28-32-34-37-39-43Approximate Melting Point(º C)111511351150117011801280Micrographic StructureausteniteausteniteausteniteausteniteausteniteausteniteMagnetic Propertynonnonnonnonnonnon