DLX offers premium 0Cr21Al4 FeCrAl Bar s engineered for reliable resistance heating elements used in demanding industrial environments. This iron-chromium-aluminum alloy, containing 21% chromium and 4% aluminum, is specifically designed to deliver high-temperature stability, oxidation resistance, and long-term durability, making it ideal for industrial furnaces, heating rods, and other thermal processing equipment.
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The 0Cr21Al4 FeCrAl alloy forms a stable aluminum oxide layer on its surface when exposed to heat. This layer provides excellent resistance to oxidation, corrosion, and scaling at temperatures up to 1,300°C. Chromium adds mechanical strength and corrosion resistance, while aluminum ensures long-term oxidation protection, making the bars ideal for continuous operation in extreme heating environments. High resistivity allows these bars to generate and distribute heat efficiently, ensuring stable and reliable performance.
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Alloy Nomenclature Performance |
1Cr13Al4 |
0Cr21Al6 |
0Cr23Al5 |
0Cr21Al4 |
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 |
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|
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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DLX 0Cr21Al4 bars are manufactured with tight tolerances and consistent material properties, ensuring precision for high-performance resistance heating applications. Available in custom lengths, diameters, and surface finishes, the bars can be machined, bent, or fabricated into specific shapes to match furnace designs, thermal rods, or element supports. This versatility allows manufacturers to optimize heat distribution and maintain uniform temperatures, enhancing process efficiency and reducing energy consumption.
0Cr21Al4 FeCrAl bars are widely applied in industrial heating, metallurgical systems, chemical processing, aerospace, and power generation. They are used as resistance heating rods, furnace structural bars, and high-temperature element supports, delivering reliable performance even in aggressive thermal and oxidizing conditions. In chemical and metallurgical processes, these bars help maintain precise heat levels, while aerospace and power industries rely on their high resistivity and durability to ensure long-term operation under extreme conditions.
Industry Trends and Demand
The demand for high-performance resistance heating materials is growing, driven by energy efficiency requirements, higher operating temperatures, and longer service life expectations. Modern industrial furnaces require materials that maintain mechanical integrity and resist oxidation at elevated temperatures. 0Cr21Al4 FeCrAl bars meet these demands, offering a combination of high resistivity, oxidation resistance, and structural stability. DLX’s expertise allows us to provide custom solutions, tight tolerances, and consistent material quality to support evolving industry needs.
Comparison Table: FeCrAl Bar Series
| Alloy | Cr % | Al % | Max Temp (°C) | Resistivity (Ω·mm²/m) | Tensile Strength (MPa) | Typical Application |
|---|---|---|---|---|---|---|
| 0Cr18Al6 | 18 | 6 | 1,250 | 1.30 | 560 | Heavy-duty furnace bars, industrial heating |
| 0Cr21Al4 | 21 | 4 | 1,300 | 1.35 | 580 | Reliable resistance heating elements, high-temp rods |
| 0Cr15Al5 | 15 | 5 | 1,200 | 1.25 | 540 | Industrial heating systems, furnace bars |
| 0Cr27Al7Mo2 | 27 | 7 | 1,400 | 1.40 | 620 | Extreme-temperature furnace components, specialized heating |
DLX differentiates itself through precision manufacturing, rigorous quality control, and technical support. Each batch of 0Cr21Al4 bars undergoes testing for resistivity, tensile strength, and dimensional accuracy, ensuring reliable performance in critical applications. Our ability to provide custom lengths, diameters, and surface finishes allows clients to implement these bars in complex heating systems with minimal adaptation. DLX’s inventory and fast delivery ensure projects stay on schedule, reducing downtime and increasing productivity.
Durability and Reliability
Using DLX 0Cr21Al4 FeCrAl bars ensures long-term stability and reduced maintenance. The combination of chromium and aluminum provides excellent oxidation resistance, while high resistivity ensures uniform heat generation. These properties make the bars highly reliable for continuous operation in extreme conditions, minimizing the risk of element failure and enhancing furnace efficiency.
DLX provides engineering guidance and custom fabrication to meet specific industrial heating requirements. Clients can select bar diameters, lengths, and surface treatments to optimize performance in furnaces, heating rods, or thermal processing equipment. Our team works closely with clients to ensure materials perform efficiently and reliably, providing technical support for installation, material selection, and maintenance considerations.
The 0Cr21Al4 FeCrAl bar from DLX is a premium solution for reliable resistance heating elements and high-temperature industrial applications. With excellent oxidation resistance, high resistivity, and mechanical strength, these bars provide consistent heating, durability, and long service life. DLX combines precision manufacturing, custom fabrication, and expert technical support, making our FeCrAl bars the trusted choice for industrial heating systems across metallurgy, chemical processing, aerospace, and power generation sectors.
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
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What material is 0Cr21Al4 FeCrAl bar made of?
Iron-Chromium-Aluminum alloy with 21% chromium and 4% aluminum. -
What is its maximum operating temperature?
Up to 1,300°C in continuous use. -
What are the main applications?
Resistance heating elements, industrial furnaces, high-temperature heating rods, and thermal processing systems. -
Is this alloy resistant to oxidation and corrosion?
Yes, it forms a protective aluminum oxide layer for excellent high-temperature oxidation resistance. -
Can the bar be customized in size or shape?
Yes, DLX provides custom lengths, diameters, and surface finishes. -
Which industries benefit most from 0Cr21Al4 bars?
Industrial heating, metallurgical processes, chemical processing, aerospace, and power generation. -
Does DLX ensure high-quality fabrication?
Yes, precision drawing, machining, and quality control ensure dimensional accuracy and material integrity. -
Why choose 0Cr21Al4 over other heating materials?
Superior high-temperature strength, excellent resistivity, long service life, and reliable performance in extreme conditions.