FeCrAl alloys

Short Description:

FeCrAl alloys, or iron-chromium-aluminum alloys, are a group of high-resistance alloys known for their excellent oxidation and corrosion resistance at elevated temperatures.


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FeCrAl alloys are designed to maintain their mechanical properties at high temperatures, making them suitable for applications where exposure to heat is a critical factor.FeCrAl alloys exhibit good corrosion resistance, particularly in oxidizing environments.

Main grades and properties

                       Grades 1Cr13A14 0Cr25A15 0Cr21A16 0Cr23A15 0Cr21A14 0Cr21A16Nb 0Cr27A17Mo2
                    Properties
Chemical composition % Cr 12.0-15.0 23.0-26.0 19.0-22.0 22.5-24.5 18.0-21.0 21.0-23.0 26.5-27.8
Al 4.0-6.0 4.5-6.5 5.0-7.0 4.2-5.0 3.0-4.2 5.0-7.0 6.0-7.0
Fe Balance Balance Balance Balance Balance Balance Balance
 Other Nb 0.5 Mo1.8-2.2
Highest service temperature ℃ 950 1250 1250 1250 1100 1350 1400
ResistivityμΩ.m,20℃ 1.25 1.42 1.42 1.35 1.23 1.45 1.53
Density (g/cm3 ) 7.4 7.10 7.16 7.25 7.35 7.10 7.10
Thermal conductivity KJ/m.h.℃ 52.7 46.1 63.2 60.2 46.9 46.1 45.2
Coefficient of linear extensibilityα×10-6/℃ 15.4 16.0 14.7 15.0 13.5 16.0 16.0
Melting point ℃ 1450 1500 1500 1500 1500 1510 1520
Tensile Mpa 580-680 630-780 630-780 630-780 600-700 650-800 680-830
Elongation % >16 >12 >12 >12 >12 >12 >10
Reduction % 65-75 60-75 65-75 65-75 65-75 65-75 65-75
Hardness H.B. 200-260 200-260 200-260 200-260 200-260 200-260 200-260
Microstructure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
Magnetic property magnetic magnetic magnetic magnetic magnetic magnetic magnetic

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