Fecralloy® is the registered trademark of the UK Atomic Energy Authority, currently referred to as AEA Technology. It is an Iron/Chromium/Aluminium steel containing Yttrium, making it a versatile alloy that is suitable for use over 1400°C.
Fecralloy® is used mainly for electrical elements in both industrial and domestic applications. Industrial applications vary from small laboratory kilns to heavy-duty heat-treatment furnaces that operate under all types of atmospheres.
The high Aluminium content, in combination with the high Chromium content, causes the scaling temperature to increase up to 1425˚C. Due to their heat resistance, these Iron/Chromium/Aluminium – FeCrAl – alloys are compared with commonly used Iron and Nickel-based alloys, where the FeCrAl alloys have clearly superior properties compared to the other alloys in most environments.
During alternating temperature conditions, the Yttrium addition to the alloy improves the adherence of the protecting oxide, making the service life of components made with the alloy longer. The alloy’s key characteristics include high resistivity, low temperature coefficient of electric resistance, high operating temperature, and good oxidation resistance under high temperature. It is widely used in industrial electric furnaces, household electrical appliances and far infrared ray devices, such as panel heaters, infrared heaters, warming plates, cartridge heaters, storage heaters, ceramic heaters for cooking plates, kiln elements, radiators, in quartz tube heaters for space heating, toasters, toaster ovens, industrial infrared dryers, coils on molded ceramic fibre for cooking plates with ceramic hobs, and so on.
Rods are used for electrical elements and fuel cells.
Strips are used for industrial resistors and rheostats in electric trains.
Tubes are generally used for thermocouple covers in furnaces and fuel cell applications.