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 Material1Cr13Al40Cr21Al60Cr23Al50Cr25Al50Cr20Al6RE0Cr21Al6Nb0Cr24Al6RE0Cr27Al7Mo2
Chemical Composition %Cr12.0-15.019.0-22.020.5-23.523.0-26.019.0-21.021.0-23.022.0-26.026.5-27.8
Al4.0-6.05.0-7.04.2-5.34.5-6.55.0-6.05.0-7.05.0-7.06.0-7.0
FeRestRestRestRestRestRestRestRest
Other––––********
Max Working Temperature, ℃9501250130013001300135014001400
Resistivity, μΩ·m, 20℃1.251.421.351.421.401.451.481.53
Density, g/cm37.47.167.257.17.27.17.17.1
Thermal Conductivity, W/(m•K)1513131313131313
Coefficient of Lines Expansion, α×10-6/℃15.414.7151514161616
Melting Point approx, ℃14501500150015001500151015201520
Tensile Strength, N/mm2580-680630-780630-780630-780630-780650-800680-830680-830
Elongation at Rupture, %>16>12>12>12>12>12>12>10
Variation of Area, %65-7565-7565-7565-7565-7565-7565-7565-75
Repeat Bending Frequency, F/R>5>5>5>5>5>5>5>5
Hardness H.B.200-260200-260200-260200-260200-260200-260200-260200-260
Continuous Service Time Hours/ ℃–≥80/1300≥80/1300≥80/1300≥50/1350≥50/1350≥80/1350≥50/1350
Micrographic StructureFerriteFerriteFerriteFerriteFerriteFerriteFerriteFerrite
Magnetic PropertiesMagneticMagneticMagneticMagneticMagneticMagneticMagneticMagnetic