FeCrAl (0Cr25Al5)

Key Features:

  • Better high-temperature corrosion resistance than 0Cr21Al6Nb (due to 25% Cr)
  • More cost-effective than Kanthal D and Kanthal AF (no rare earth doping). 
  • Longer lifespan in sulfur-rich environments compared to low-Cr FeCrAl. 
PDF Download

About FeCrAl (0Cr25Al5)

Heanjia Super Metals Co., Ltd. is leading supplier of FeCrAl wire in China. We adopts the dual electroslag smelting technical route of three-phase lined furnace + electroslag remelting. This offers advantages such as high purity, good uniformity, and long material service life. 

Our Best selling products are: FeCrAl Wire 0Cr25Al5 grade, HJ209(Kanthal A1 substitute) and HJ407(Kanthal APM substitute). What are these products designed for? They are designed for extreme high-temperature applications, offering superior oxidation resistance, corrosion resistance, and thermal stability compared to standard FeCrAl grades.

Here below is introduction of our FeCrAl wire 0Cr25Al5 grade. 

  1. Chemical Composition (Weight %)
Element Content (%) Role in the Alloy
Iron (Fe) Balance (~70%) Base material
Chromium (Cr) 25% Enhances oxidation & corrosion resistance
Aluminum (Al) 5% Forms protective Al₂O₃ layer at high temps
Impurities (C, Si, Mn, etc.) <1% Minimized for optimal performance

 Key Features Due to Composition: 

✔ Higher Cr (25%) → Better resistance to sulfur, chlorine, and corrosive gases than lower-Cr FeCrAl alloys. 

✔ 5% Al → Forms a stable Al₂O₃ layer, preventing further oxidation. 

✔ No rare earth elements → More cost-effective than Kanthal APM (Ce-doped) but slightly less creep-resistant. 

  1. Key Properties:
Property Value Notes
Max Operating Temp (Air) 1300°C (2372°F) Lower than 0Cr21Al6Nb (1350°C)
Oxidation Resistance Excellent Better than 0Cr23Al5 due to higher Cr
Electrical Resistivity ~1.45 μΩ·m Suitable for heating elements
Mechanical Strength High Retains strength at high temps
Thermal Shock Resistance Moderate Avoid rapid cooling to prevent cracking

 Advantages Over Other FeCrAl Alloys: 

– Better high-temperature corrosion resistance than 0Cr21Al6Nb (due to 25% Cr). 

– More cost-effective than Kanthal D and Kanthal AF(no rare earth doping). 

– Longer lifespan in sulfur-rich environments compared to low-Cr FeCrAl. 

  1. Applications:

 Industrial Heating 

✔ Electric furnaces (sintering, annealing, brazing at ≤1300°C) 

✔ Industrial kilns (ceramics, glass, metallurgy) 

✔ Heat treatment equipment (carburizing, tempering furnaces) 

 Energy & Chemical Processing 

✔ Resistance heating wires (for high-temp reactors) 

✔ Chlor-alkali industry (corrosion-resistant heaters) 

✔ Petrochemical heaters (sulfur-resistant due to high Cr) 

 Consumer & Specialty Uses 

✔ High-end heating coils (laboratory furnaces, thermocouples) 

✔ Aerospace components (thermal protection systems) 

  1. Comparison with Similar FeCrAl Alloys:
Alloy Grade Cr % Al % Nb % Max Temp (°C) Key Advantage Price
0Cr23Al5 23% 5% — 1250°C Standard industrial grade $8/kg-$20/kg
0Cr25Al5 25% 5% – 1300°C Higher Cr for corrosion resistance $8/kg-$20/kg
0Cr21Al6Nb 21% 6% 0.5-1% 1350°C Best oxidation + creep resistance $18/kg-$28/kg
HJ209(Kanthal A-1 Substitute) 22% 5.8% – 1400°C Premium industrial grade $20/kg-$30/kg
HJ407(Kanthal APM Substitute) 21% 5% 0.02% Ce 1425°C Rare-earth enhanced $28/kg-$50/kg

Our Advantage: 

Currently, only our company in China adopts the dual electroslag smelting technical route of three-phase lined furnace + electroslag remelting. What advantages do I get from this technical route? This offers advantages such as high purity, good uniformity, and long material service life. What smelting process do other companies in the same industry use? Other companies in the same industry use medium-frequency furnace smelting, which our company phased out long ago. What are the drawbacks of medium-frequency furnace smelting compared to my company’s process? Their process uses a large amount of scrap steel, resulting in relatively lower costs but higher content of harmful impurities, high compositional segregation and non-uniformity, unstable and fluctuating material properties, susceptibility to local melting during use, and short service life cycles.

Through years of technical experimentation, our company has overcome the technical challenge of producing this material in large coil weights. How much has the coil weight increased over time? The coil weight has increased from over 20 kg for many years to over 90 kg. What production equipment and technology have I matched to support this improvement? We have correspondingly matched integrated production equipment and technology for steel rolling, wire drawing, and heat treatment, which is unique within the domestic industry.

Frequently Asked Question

  1. What properties make FeCrAl 0Cr25Al5 resistance alloys useful?
    Ans. FeCrAl 0Cr25Al5 resistance alloys offer high temperature resistance, excellent oxidation resistance and stable resistivity, making them ideal for industrial heating elements. The FeCrAl 0Cr25Al5 supplied by Heanjia Super Metals are the most widely used heating material for conventional heating systems. Its highest working temperature is 1300℃ which is enough for most general heating treatments.
  2. Which high‑performance 0Cr25Al5 alloys work in high‑temp heaters?
    Ans. High‑performance 0Cr25Al5 alloys are used in electric heating elements, industrial furnaces, and high‑temperature applications due to their high oxidation resistance and mechanical strength from Heanjia Super Metals.
  3. What 0Cr25Al5 heater alloy options exist for industrial furnaces?
    Ans. 0Cr25Al5 heater alloy include raw material like fiber, round wire, ribbon, flat wire, rod, bar; and ready to instal heating elements like spiral coil, corrugated ribbon, heating rods. They are all available from Heanjia Super Metals.
  4. Where are 0Cr25Al5 FeCrAl strip and wire alloys used?
    Ans. FeCrAl strip and wire made of 0Cr25Al5 are used in both industrial and domestic heating systems in the form of heating coils, heating ribbons and heating rods for their oxidation resistance and thermal stability. They are supplied by Heanjia Super Metals.
  5. What industrial high‑temp heating elements use FeCrAl 0Cr25Al5?
    Ans. FeCrAl 0Cr25Al5 alloy is used for high-temperature industrial heating elements in furnaces, kilns, and ovens for heat treating, ceramics, glass, and metallurgy, as well as in high-end lab equipment, toasters, and even electric cooktops, prized for its excellent oxidation resistance, high resistivity, and stability up to around 1300°C (2370°F)

Related Products