... , corresponding to a resistance temperature of 2372°F.All ferritic alloys have approximatively the same basis composition: 20 to 25 % of ... contain in addition rare earth, as Yttrium or Silicium.Those alloys having a ferritic structure, we observe, after a maintenance at ... when it is come again at ambient temperature.CORROSIONAll the alloys FeCrAl form, in oxidising atmosphere, a protective coat of ...