CuNi44 CuNi Alloy Cupronickel Strip for thermal and electrical dynamicsConstantan Definition
Resistancealloywithmoderateresistivityandlowtemperaturecoefficentofresistancewithaflatresistance/temperaturecurveoverawiderrangethanthe"manganins".Constantanalsoshowsbettercorrosionresistancethanthe man ganins.UsestendtoberSorting Machine estrictedtoaccircuits.ConstantanisalsothenegativeelementofthetypeJthermocouplewithIronbeingthepositive;typeJthermocouplesareusedinheattreatingapplications.Also,itisthenegativeelementRefrigerator, Freezer & Parts Sound Module ofthetypeTthermocouplewithOFHCCopperthepositive;typeTthermocouplesareusedatcryogenictemperatures.Chemical Content, %NiMnFeSiCuOtherROHS DirectiveCdPbHgCr441.50%0.5-Bal-NDNDNDND
Mechanical PropertiesMax Continuous Service Temp400ºCResisivity at 20ºC0.49±5%ohm mm2/mDensity8.9 gPacking Machinery /cm3Thermal Conductivity-6(Max)Melting Point1280ºCTensile Strength,N/mm2 Annealed,Soft340~535 MpaTensile Strength,N/mm3 Cold Rolled680~1070 MpaElongation(anneal)25%(Min)Elongation(cold rolled)≥Min)2%(Min)EMF vs Cu, μV/ºC (0~100ºC)-43Micrographic StructureausteniteMagnetic PropertyNon
Constantan Tradenames:
Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45,
Neutrology, Advance, CuNi 102, Cu-Ni 44, KonstantanResistance Alloy- Constantan Sizes / Temper CapabilitiesConditionBright;Annealed; SoftWirediameter 0.02mm-1.0mm packing in spoolbigStencil than 1.0mm packing in coilRodBar diameter 1mm-30mmStripThickness 0.01mm-7mmWidth 1mm-280mm
Resistancealloyconstantanwirematerial:
Constantan,CuNi1,CuNi2,CuNi6,CuNi8,CuNi10,CuNi14,CuNi19,CuNi23,CuNi30,CuNi34,CuNi40(6J40),CuNi44.
Characteristics
Constantanhasanumberofspecialcharacteristicsduetowhichitisknownasthemostversatilealloythatisavailable.Someofitsimportantcharacteristicsare:
Highspecificheatresistance
NegligibletemperatureCoefficient
Easilyductile
Resistanttoatmosphericcorrosion
Canbeeasilysolderedandmolded
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