Nichrome 70 (UNS N06008 / W.Nr. 2.4658) is a nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1250℃. The alloy is characterized by high resistivity and good oxidation resistance. It has good ductility after use and excellent weldability.

Equivalent Grades

Nikrothal 70
Resistohm 70
Cr30Ni70N06008NiCr70 302.4658

Chemical Composition, %

Nichrome 70≤0.080.75-1.60≤0.60≤0.020≤0.01528.0-31.0Bal≤0.50≤1.00

Mechanical Properties (RT, Annealed)

Tensile Strength, Rm/MPaElongation, A/%
Dia. >3.00mm (Wire)
Thk. >0.20mm (Strip)
Dia. 0.10-3.00mm (Wire)
Thk. <0.20mm (Strip)

Physical Properties

Max Working Temp., Melting Point, Density, g/cm3Resistivity, μΩ·m 20℃Specific Heat, J/(g•K)Thermal Conductivity, W/(m•K) 20℃Average Coefficient of Thermal Expansion,α×10-6/℃ 20-1000℃Micrographic StructureMagnetic Properties

 Life Test

Test Temperature, ℃Continuous Service Time Hours, ℃

 Temperature Factor of Resistivity


 Available Products and Specifications

Rod, Bar, Wire and ForgingsGB/T 1234-2012, DIN 17470-1984
Plate, Sheet and StripGB/T 1234-2012, DIN 17470-1984
Pipe and Tube
Welding Product


  • Great ductility
  • Excellent workability and weldability under high temperature
  • High and stable resistivity
  • Surface oxidation resistance
  • Sufficient high temperature strength
  • Working temperature up 1250℃


  • Corrosion resistant electric heating elements in industrial furnaces with reducing atmospheres
  • Highly resistant to oxidation in air
  • Not recommend for use in MgO sheathed heating elements, or applications using nitrogen or carburizing atmospheres