FeCrAl Alloys

FeCrAl Alloy is one kind of resistance heating alloy which used in a wide range of resistance and high temperature applications. It is mainly comsisted by iron, chromium and aluminium. Meanwhile its’ resistivity grow as the increase of the composition of Cr and Al content!

Features

  • Superior anti-oxidization
  • Anti-sulfur
  • Anti-cementite
  • Small specific gravity
  • High surface load
  • High resistivity
  • High operationg temperature up to 1400°C
  • Long life-span
  • Low price

Applications

  • Home applicances, like dryer, toasters
  • Industrial heaters, kilns and diffusion heaters (used in the making of crystalline silicon)
  • Heating coils in electronic cigarettes

Specifications

Performance Material1Cr13Al40Cr25Al50Cr21Al60Cr23Al50Cr21Al40Cr21Al6Nb0Cr27Al7Mo2
Chemical Composition %Cr12.0-15.023.0-26.019.0-22.020.5-23.518.0-21.021.0-23.026.5-27.8
Al4.0-6.04.5-6.55.0-7.04.2-5.33.0-4.25.0-7.06.0-7.0
Reopportuneopportuneopportuneopportuneopportuneopportuneopportune
FeRestRestRestRestRestRestRest
Nb: 0.5Mo: 1.8-2.2
Max Working Temperature, ℃950125012501250110013501400
Resistivity, μΩ·m, 20℃1.251.421.421.351.231.451.53
Density, g/cm37.47.17.167.257.357.17.1
Thermal Conductivity, KJ/m.h℃52.746.163.260.246.946.145.2
Coefficient of Lines Expansion, α×10-6/℃15.41614.71513.51616
Melting Point approx, ℃1450150015001500150015101520
Tensile Strength, N/mm2580-680630-780630-780630-780600-700650-800680-830
Elongation at Rupture, %>16>12>12>12>12>12>10
Variation of Area, %65-7560-7565-7565-7565-7565-7565-75
Repeat Bending Frequency, F/R>5>5>5>5>5>5>5
Hardness H.B.200-260200-260200-260200-260200-260200-260200-260
Continuous Service Time Hours/ ℃≥80/1300≥80/1300≥80/1300≥80/1250≥50/1350≥50/1350
Micrographic StructureFerriteFerriteFerriteFerriteFerriteFerriteFerrite
Magnetic PropertiesMagneticMagneticMagneticMagneticMagneticMagneticMagnetic