The 0Cr25Al5 heat-resistant steel rod is a type of FeCrAl alloy, widely used in industrial electric heating systems due to its excellent oxidation resistance, high-temperature stability, and long service life. This alloy typically contains iron (Fe) as the base metal, with 25% chromium (Cr) and 5% aluminum (Al), forming a stable and protective aluminum oxide layer when exposed to high temperatures.
The high aluminum content increases oxidation resistance, while chromium enhances corrosion protection and mechanical strength. This composition makes it an ideal material for electric furnaces, industrial heaters, and kilns, where durability and consistent performance are essential.
At DLX Alloy, we ensure that every 0Cr25Al5 rod is manufactured through vacuum melting and precise rolling processes, guaranteeing uniform chemical composition, high dimensional accuracy, and excellent thermal stability.
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0Cr25Al5 alloy bars are used in a wide range of high-temperature heating environments, including:
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Electric furnaces and kilns for ceramics, glass, and metallurgy
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Heating elements in electric furnaces and industrial ovens
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Resistors and heating coils in high-power equipment
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Heat treatment and sintering equipment
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Electric heating tubes and air heaters
Because of its high resistivity and excellent oxidation resistance, 0Cr25Al5 is often chosen over lower-grade FeCrAl alloys when the application requires long-term operation above 1200°C.
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Alloy Nomenclature Performance |
1Cr13Al4 |
0Cr21Al6 |
0Cr23Al5 |
0Cr27Al7Mo2 |
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|
Chemical Compostion (%) |
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 |
|
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 |
|
|
Re |
Opportune |
Opportune |
Opportune |
Opportune |
Opportune |
Opportune |
Opportune |
|
|
Fe |
Rest |
Rest |
Rest |
Rest |
Rest |
Rest |
Rest |
|
|
-- |
-- |
-- |
-- |
-- |
-- |
-- |
||
|
Max.Continuous service temp. of element |
950 |
1250 |
1250 |
1250 |
1100 |
1350 |
1400 |
|
|
Resistivity at 20C(μΩ.m) |
1.25 |
1.42 |
1.42 |
1.35 |
1.23 |
1.45 |
1.53 |
|
|
Density(g/cm) |
7.4 |
7.1 |
7.16 |
7.25 |
7.35 |
7.1 |
7.1 |
|
|
Thermal Conductivity(KJ/m.h) |
52.7 |
46.1 |
63.2 |
60.2 |
46.9 |
46.1 |
-- |
|
|
Coefficient of lines expansion(αx10-6/℃) |
15.4 |
16 |
14.7 |
15 |
13.5 |
16 |
16 |
|
|
Melting Point Approx(degree) |
1450 |
1500 |
1500 |
1500 |
1500 |
1510 |
1520 |
|
|
Tensile Strength(N/mm) |
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 |
|
|
Repeat 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 |
≥80/1350 |
≥80/1350 |
|
|
Micrographic structure |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
Ferrite |
|
|
Magnetic properties |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
Magnetic |
|
|
Shape |
Size (mm) |
|
Wire |
0.05-7.5 |
|
Rod |
8-50 |
|
Ribbon |
(0.05-0.35)*(0.5-6.0) |
|
Strip |
(0.5-2.5)*(5-180) |
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The electric heating industry is rapidly evolving as global manufacturing shifts toward energy-efficient, high-temperature, and eco-friendly heating systems. Materials like 0Cr25Al5 are becoming more popular due to their high efficiency and cost-effectiveness compared to nickel-based alloys.
In the new energy and advanced manufacturing sectors, precision control of heat is essential—whether in semiconductor sintering, battery component drying, or powder metallurgy. As a result, the demand for high-performance FeCrAl alloys such as 0Cr25Al5 continues to rise.
DLX Alloy has adapted to this trend by upgrading melting technology, improving surface finish, and enhancing mechanical strength, ensuring that our 0Cr25Al5 products meet the latest industrial standards.
Product Comparison Table
| Property | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | NiCr8020 |
|---|---|---|---|---|
| Composition (Cr-Al %) | 25-5 | 21-6 | 23-5 | 80Ni-20Cr |
| Max Operating Temp (°C) | 1400 | 1300 | 1350 | 1200 |
| Oxidation Resistance | Excellent | Very Good | Excellent | Good |
| Electrical Resistivity (μΩ·m) | 1.45 | 1.35 | 1.40 | 1.09 |
| Density (g/cm³) | 7.1 | 7.15 | 7.12 | 8.4 |
| Service Life at 1200°C | 8,000+ hrs | 7,000 hrs | 7,500 hrs | 5,000 hrs |
| Cost Efficiency | High | High | High | Medium |
Compared to other heating materials, 0Cr25Al5 stands out for its balance of durability, oxidation resistance, and affordability—a key reason why many manufacturers prefer it for large-scale industrial heating elements.
Company Advantage – DLX Alloy Perspective
At DLX Alloy, our strength lies not only in our alloy composition but also in our control over production consistency. We use vacuum melting furnaces and advanced drawing and rolling machines to achieve precise mechanical properties and surface finish.
Unlike many factories that focus on quantity, DLX emphasizes longevity and stability. Each 0Cr25Al5 heat-resistant rod undergoes:
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Rigorous oxidation testing at 1250–1350°C
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Mechanical strength validation under thermal cycling
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Electrical resistivity consistency checks
This ensures that every bar delivered performs reliably in demanding high-temperature applications.
Our clients in industrial furnace manufacturing, ceramics, and metallurgy appreciate DLX’s stable supply, quick lead times, and full technical support. Whether you require custom diameters, cut-to-length rods, or large bulk production, DLX can tailor the product to your needs.
As industrial heating shifts toward automation and sustainability, FeCrAl materials are replacing traditional resistance alloys. The 0Cr25Al5 composition, with its superior oxidation film and high resistivity, offers the best balance between performance and energy savings.
The alloy’s ability to maintain stable resistance even after long-term heating cycles makes it ideal for smart heating systems and programmable furnaces, where precision and reliability are critical.
DLX’s continuous investment in R&D enables us to improve the microstructure and heat treatment process of 0Cr25Al5 alloys, resulting in better grain stability and improved creep resistance at extreme temperatures.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs
1. What is the main advantage of using 0Cr25Al5 over lower-chromium FeCrAl alloys?
It offers better oxidation resistance and higher temperature capability, suitable for operations up to 1400°C.
2. Can 0Cr25Al5 be used in continuous furnace environments?
Yes, it is ideal for continuous heating systems due to its excellent oxidation film stability and long lifespan.
3. How does DLX ensure the quality of 0Cr25Al5 rods?
We use vacuum melting, advanced drawing, and strict testing for resistivity, tensile strength, and oxidation resistance.
4. Is 0Cr25Al5 suitable for electric furnace coils?
Absolutely. Its high resistivity and strength make it perfect for coiling and shaping into electric furnace heating elements.
5. What surface finish options are available?
DLX offers bright, polished, and oxide-coated finishes based on customer requirements.
6. How does the aluminum content improve performance?
Aluminum forms a dense, self-healing Al₂O₃ film that protects the alloy from further oxidation.
7. What is the typical service life of 0Cr25Al5 at 1300°C?
Typically more than 8,000 hours under stable operating conditions.
8. Can DLX provide custom dimensions or cut lengths?
Yes, we offer full customization for diameter, tolerance, and length to match specific heating system designs.
Conclusion
The 0Cr25Al5 FeCrAl alloy bar stands as one of the most reliable materials for high-temperature electric heating applications, offering excellent oxidation resistance, mechanical strength, and electrical performance.
At DLX Alloy, we combine advanced manufacturing technology with strict quality control to provide customers with durable, high-performance materials that meet the evolving needs of modern industries. Whether it’s for electric furnaces, industrial heaters, or precision sintering systems, our 0Cr25Al5 rods are engineered to deliver efficiency, longevity, and stability.