FeCrAl Alloy
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Ferritic iron-chromium-aluminum alloys
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FeCrAl alloy (Ferritic iron-chromium-aluminum alloy) is a high-performance heating material with characteristics of high resistance, low temperature coefficient of electric resistance, high operating temperature, good corrosion resistance under high temperature, and superior oxidation resistance. It is widely used in chemical processing, metallurgy, and high-temperature heating equipment, offering a durable and stable heating solution. Heating elements made from FeCrAl alloy help optimize energy efficiency and reduce industrial production costs.
Available grades: 1Cr13Al4, 0Cr25Al5, 0Cr21Al6, 0Cr23Al5, 0Cr21Al4, 0Cr21Al6Nb, 0Cr27Al7Mo2
- FeCrAl alloy has a high melting point, typically above 1400°C, and can maintain stable performance at 1200°C for extended periods.
- At high temperatures, the aluminum in the alloy forms a dense aluminum oxide (Al₂O₃) protective film, which prevents further oxidation and enhances durability.
- The material exhibits low volatility and strong sulfur resistance, ensuring long-term stability while reducing material loss and replacement frequency.
- It has high resistivity with minimal resistance variation at elevated temperatures, making it highly suitable for heating applications.
- Compared to Nickel-Chromium alloys, FeCrAl alloy offers similar or superior performance at a lower cost, providing a more cost-effective solution for industrial heating applications.
- Industrial furnaces: Used as heating elements in melting furnaces, annealing furnaces, and other high-temperature systems
- Household appliances: Commonly found in ovens, heaters, and portable electric heating devices
- Far-infrared devices: Utilized for efficient heat radiation applications
- Nuclear engineering: Potential use in nuclear reactor components due to its high-temperature stability
- Additive manufacturing (3D printing): Ideal for high-temperature component fabrication in specialized manufacturing processes
Product Forms
FeCrAl Alloy Wire
FeCrAl Alloy Rod
FeCrAl Alloy Strip
- Wire 0.05-7.5
- Rod 8-50
- Flat Wire (0.05-0.35)*(0.5-6.0)
- Strip/Foil (0.5-2.5)*(5-180)
Chemical Composition
| Grades | ||||||||
| Main Chemical Composition (%) | Chromium (Cr) | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 20.5-23.5 | 18.0-21.0 | 21.0-23.0 | 26.5-27.8 |
| Aluminum (Al) | 4.0-6.0 | 4.5-6.5 | 5.0-7.0 | 4.2-5.3 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 | |
| Other Additions | Opportune | Opportune | Opportune | Opportune | Opportune | Opportune | Opportune | |
| Iron (Fe) | Rest | Rest | Rest | Rest | Rest | Rest | Rest | |
| Nb0.5 | Mo1.8-2.2 | |||||||
Physical & Mechanical Properties
| Grades | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 |
| Max. Service Temperature (°C) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 |
| Resistivity at 20℃ (μΩ·m) | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 |
| Density (g/cm³) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 |
| Thermal Conductivity (KJ/m.h.ºC) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | -- |
| Coefficient of Lines Expansion (α×10⁻⁶/20~1000ºC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 |
| Melting Point (°C) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 |
| Tensile Strength (N/mm²) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 |
| Elongation at Rupture (%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 |
| Variation of Area (%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 |
| Bending Frequency (F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 |
| Hardness (H.B.) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 |
| Continuous Service Time (Hours/ºC) | -- | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥80/1250 | ≥50/1350 | ≥50/1350 |
| Micrographic Structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
| Magnetic Properties | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic |
Standard Compliant
Our production adheres to JIS G4313 standards, ensuring compliance with international quality benchmarks.
Equivalent overseas standards are listed for reference.
- ISO 80000, 15156 (NACE MR0175)
- IEC 60115-1, 60695
- ASTM A801/A801M, E1409
- EN E1409
- DIN 17175
- BS EN 10295
- SAE AMS 5524
- UL 746B
- JIS G4905, Z2371
- GB/T 1234, 10067.1-10067.3, 13304.1, 2820
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