FeCrAl alloys
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 | |
