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Nichrome 70 Alloy Wire
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Last update: 2020-03-14 20:14
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Nichrome 70 Resistance Alloy Wire/Strip



Nichrome 70 is a nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1250℃. The alloy is characterized by high resistivity, good oxidation resistance and very good form stability. It has good ductility after use and excellent weldability.






* Similar grade






















Trademarks


GB


JIS


ASTM


UNS


DIN


W.Nr


GOST


Kanthal


STABLOHM 710



RESISTOHM 70



Nichrome 70



Chromel 70/30



Tophet 30



GILPHY 70



N7


Cr30Ni70


-


-


UNS N06008


NiCr70 30


2.4658


ХН70Ю


Nikrothal 70





* Specification



GB/T 1234-1995 (CN); JIS C2520-199(JP); ASTM B344-01(USA); DIN 17470-1984(GER); GOST 10994 & GOST 12766/1-1990 (RU)






* Product form



Wire, Mesh, Conveyor belt, Ribbon, Strip, Rod, Sheet, Tube, Radiant tube heater






* Chemical composition, %






















C


P


S


Mn


Si


Cr


Ni


Al


Fe


≤0.08


≤0.02


≤0.015


≤0.60


0.75~1.60


28.0~31.0


Bal


≤0.50


≤1.0





* Mechanical property (Annealed)











Tensile strength, Rm/MPa


Elongation, A/%


Dia. >3.00mm (for wire)


Dia. 0.10~3.00mm (for wire) and Th. >0.20 (for strip)


≥650


≥25


≥20





* Physical property






















Max working temperature, ℃


Melting point, ℃


Density, g/cm3


Resistivity, μΩ·m, 20℃


Specific heat, J/g·℃


Thermal conductivity, KJ/m·h·℃


Average coefficient of linear expansion, α×10-6/℃ （20~1000℃）


Micrographic structure


Magnetic properties


1250


1380


8.1


1.18


0.461


45.2


17.0


Austenitie


Non-Magnetic





* Life test








Test temperature, ℃


Continuous service time Hours, ℃


1250


≥50





* Temperature factor of resistivity
































20℃


100℃


200℃


300℃


400℃


500℃


600℃


700℃


800℃


900℃


1000℃


1100℃


1200℃


1300℃


1.000


1.007


1.016


1.028


1.038


1.044


1.036


1.030


1.028


1.029


1.033


1.037


1.043


-





* Feature



Nichrome 70 withstands temperatures up to 1250°C






* Application



Used for corrosion resistant electric heating elements in industrial furnaces with reducing atmospheres. Highly resistant to "green rot" – a preferential intergranular oxidation of the chromium that is commonly experienced with other alloys under certain environmental conditions. Highly resistant to oxidation in air. Not recommend for use in MgO sheathed heating elements, or applications using nitrogen or carburizing atmospheres.




http://www.alloymanufacture.com/

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