Hangzhou Ualloy Material Co.,Ltd

Basic Info.Model NO.:CuNi40Product Type:WireMaterial:CuNi Alloy WireCarbon Content:NonePCD:NoneET:NoneHole:NonePackage:Coil Cartons, Pallet, Spools, CoilsSpecification:ROHS, SGSTrademark:UALLOYOrigin:ChinaServes:Small Oreder AcceptedSample Free:AvailableProduction Capacity:200 Tons/YearProduct Description                                                     Constantan/CuNi40 Wire for ResistorProduct Description      Constantan Wire with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". Constantan also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits.     Constantan wire is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications. Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures. Chemical Content, %NiMnFeSiCuOtherROHS DirectiveCdPbHgCr441.50%0.5-Bal-NDNDNDND Mechanical PropertiesMax Continuous Service Temp400ºCResisivity at 20ºC0.49±5%ohm mm2/mDensity8.9 g/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 Packaging