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 Material | 1Cr13Al4 | 0Cr21Al6 | 0Cr23Al5 | 0Cr25Al5 | 0Cr20Al6RE | 0Cr21Al6Nb | 0Cr24Al6RE | 0Cr27Al7Mo2 | |
| Chemical Composition % | Cr | 12.0-15.0 | 19.0-22.0 | 20.5-23.5 | 23.0-26.0 | 19.0-21.0 | 21.0-23.0 | 22.0-26.0 | 26.5-27.8 |
| Al | 4.0-6.0 | 5.0-7.0 | 4.2-5.3 | 4.5-6.5 | 5.0-6.0 | 5.0-7.0 | 5.0-7.0 | 6.0-7.0 | |
| Fe | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | |
| Other | – | – | – | – | ** | ** | ** | ** | |
| Max Working Temperature, ℃ | 950 | 1250 | 1300 | 1300 | 1300 | 1350 | 1400 | 1400 | |
| Resistivity, μΩ·m, 20℃ | 1.25 | 1.42 | 1.35 | 1.42 | 1.40 | 1.45 | 1.48 | 1.53 | |
| Density, g/cm3 | 7.4 | 7.16 | 7.25 | 7.1 | 7.2 | 7.1 | 7.1 | 7.1 | |
| Thermal Conductivity, W/(m•K) | 15 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | |
| Coefficient of Lines Expansion, α×10-6/℃ | 15.4 | 14.7 | 15 | 15 | 14 | 16 | 16 | 16 | |
| Melting Point approx, ℃ | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 | 1520 | |
| Tensile Strength, N/mm2 | 580-680 | 630-780 | 630-780 | 630-780 | 630-780 | 650-800 | 680-830 | 680-830 | |
| Elongation at Rupture, % | >16 | >12 | >12 | >12 | >12 | >12 | >12 | >10 | |
| Variation of Area, % | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
| Repeat Bending Frequency, F/R | >5 | >5 | >5 | >5 | >5 | >5 | >5 | >5 | |
| Hardness H.B. | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
| Continuous Service Time Hours/ ℃ | – | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥50/1350 | ≥50/1350 | ≥80/1350 | ≥50/1350 | |
| Micrographic Structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | |
| Magnetic Properties | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | |
