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  • Measurement & Analysis Instruments>>>Electrical Instruments>>>Clamp Meters

    Nicr/Nichrome Resistance Alloy Wires and Strips 1372 ERROR: No record of payment. Why did you add a falsified confirmation number?
    Contact admin to correct misunderstanding. 706-335-3841
    No.126,Jincheng Road,Xindeng Town,Fuyang District,Hangzhou
    Hangzhou
    86-0571-63255636
    E-mail: MichaelQiu
    http://www.alloystrip.com

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  • Basic Info.Model NO.:Cr20Ni80, Cr30Ni70, Cr15Ni60Product Type:WireMaterial:NichromeCarbon Content:Low CarbonPackage:Packed in Plywood BoxesTrademark:UALLOYOrigin:ChinaTreatment:Hydrogen AnnealingSurface:BrightCondition:SoftColor:Silvery WhiteDrawing Method:Water or OilResistance:StableDelivery Time:10-20 Days,According to The QuantityHS Code:7502200000Production Capacity:100tons Per MonthProduct DescriptionNIckel Resistance WiresElectric Resistance Heating wires or strips,Electro-thermal wires or strips,Heating WiresNickel-chromium AlloysThose are alloys of chemical composition Ni Cr Fe with some additional elements so as Silicium (Si) and manganese (Mn) in order to confer them an excellent behaviour when hot and an addition of rare earth in order to increase their life time.Alloys in question are:Resistohm 80 -70 -60 -40 -30 - 20Their metallurgical structure confers them a very good plasticity when cold. There is a growth of the grain under heat during utilisation of the element without inducing embrittlement of it when cold. They are used for the manufacture of electric resistances for appliances (insulated elements type tubular resistances or for example opened elements on micanit plate) or for application of industrial furnaces. In addition of a relatively high specific resistance, Ni-Cr alloys join all the necessary properties for good performances in use of furnaces:Resistance to oxidation (they are not sensitive to aggressions of humid air)Low embrittlement at high temperatureGood plasticity - Easier to give them a shape compared with FeCrAl (lower mechanical characteristics allow indeed a good control of elasticity of the product during shaping (coiling, folding, drawing)Good resistance to creeping (more important than ferritic alloys) which is important during conception of a resistance presenting big heights of waves. Maximal temperature recommended in the furnace: 1050 / 1100 ° C in order to obtain a reasonable life time of the elements.Constraints:Nevertheless, it is to be rejected in presence of a sulphurous or chlorinated atmosphere. The sulphur causes indeed breaking on nickel alloys at higher temperatures of 650 ° C ("green rot" phenomenon). For carbonaceous atmospheres, at some temperatures between 600 and 900 ° C, Ni-Cr prove less resistant than FeCrAl.Alloy Nomenclature PerformanceCr20Ni80Cr30Ni70Cr15Ni60Cr20Ni35Cr20Ni30Main Chemical compositionNiRestRest55.0-61.034.0-37.030.0-34.0Cr20.0-23.028.0-31.015.0-18.018.0-21.018.0-21.0Fe≤ 1.0≤ 1.0RestRestRestMax. continuous service temp. of element(º C)12001250115011001100Resistivity at 20º C (μ Ω · m)1.091.181.121.01.04Density(g/cm3)8.408.108.207.907.90Thermal conductivity (KJ/m· h· º C)60.345.245.243.843.8Coefficient of lines expansion(α × 10-6/º C)18.017.017.019.019.0Melting point approx. ( º C)14001380139013901390Elongation at rupture(%)> 20> 20> 20> 20> 20Micrographic structureausteniteausteniteausteniteausteniteausteniteMagnetic propertiesnonmagneticnonmagneticWeak magneticWeak magneticWeak magnetic                                                        

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