Iron-chromium-aluminium (FeCrAl) alloys are ferrite alloys with high resistivity and working temperatures.

Advantages

  • Excellent oxidation resistance and better carburization resistance than nickel-chromium alloys
  • Higher resistivity and lower specific gravity than Ni-Cr alloys
  • Better corrosion resistance against sulfur-containing atmosphere

Fe-Cr-Al alloys

Grade Density g/cm3 Max cont. working temp °C Resistivity at 20ºC Ώ mm2/m
Cr13-Al4 7.40 950 1.25
Cr20-Al3 7.35 1100 1.23
Cr23-Al5 7.25 1250 1.35
Cr25-Al5 7.25 1250 1.42
Cr21-Al6 7.10 1350 1.43
NW-HTP 7.10 1400 1.52

Temperature coefficient of resistance

know more about Temperature Coefficient

Forms

Wire, strip, ribbon are available for all grades, foil and tube are available for some grades.