Resistance wires and ribbons

Austenitic and ferritic resistance heating alloys


Resistance heating alloys are characterized by high and constant specific electrical resistance values. They are used wherever electrical energy is converted into heat. There are two main groups of alloys: The ferritic (FeCrAl) and the austenitic (NiCr) alloys.
NiCr 80/20 (up to 1200°C) is the austenitic alloy with the high nickel content. Because of its good properties, it is widely used in the electric appliance industry. FeCrAl 20/5 (up to 1300°C) is ferritic alloy that has higher resistivity and lower density, but also better heat resistance than austenitic alloys. Its features make it suitable for most applications in appliance industry, electronics and heating element production. FeCrAl 25/5 (up to 1400°C) is ferritic alloy commonly used in industrial furnaces and heat treatment processes. All alloys can be produced in different dimensions and shapes of cross sections, such as wires, rods, ribbons and strips.


  • Electric appliance industry
  • Industrial furnaces and heat treatment plants
  • Heating elements production
  • Electronic components
  • Brake and starting resistors
  • Low temperature heating applications

Technical data

Type of heating

Contact heating


Austenitic alloys:
NiCr 80/20 (2.4869)

Ferritic alloys:
FeCrAl 20/5 (1.4767)
FeCrAl 25/5 (1.4765)


Wire diameter: from Ø0.06mm to Ø7.00mm

Ribbon width: from 0.50mm to 30mm
Ribbon thickness: from 0.10mm to 1.50mm


Adapted for the application


Adapted for the application


Round cross section: Wire, Rod
Rectangular cross section: Ribbon, Strip


Maximum temperature:

Up to 1200°C for NiCr 80/20 (2.4869) alloy
Up to 1300°C for FeCrAl 20/5 (1.4767) alloy
Up to 1400°C for FeCrAl 25/5 (1.4765) alloy

Small sizes are available on spools (app. mass 3-6kg)
Large sizes are available in coils (app. inner diameter 500-600mm)


Austenitic alloys benefits:
  • Non-magnetic properties
  • Better creep strength and hot strength
  • Higher level of emissivity
  • Better ductility after use
  • Higher resistance to wet corrosion 

Ferritic alloys benefits:

  • Higher surface load and max. temperature
  • Longer service life
  • Better yield strength
  • Higher electrical resistivity
  • Better surface oxidation
  • Lower density, weight savings
  • Higher resistance to sulphur

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