FeCrAl (0Cr23Al5)

Key Features:

  • Superior oxidation resistance compared to NiCr alloys at temperatures above 1000°C
  • Longer service life in air atmospheres than standard 20Cr-5Al alloys
  • Cost-effective alternative to expensive brands like Kanthal D, Kanthal AF
  • Stable resistance characteristics over extended service periods
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About FeCrAl (0Cr23Al5)

The FeCrAl (0Cr23Al5) is a high-performance iron-chromium-aluminum alloy widely used in electric heating applications due to its excellent oxidation resistance and cost-effectiveness. How does FeCrAl (0Cr23Al5) balance performance and cost? As a mid-range composition in the FeCrAl alloy family, it balances performance and affordability for industrial heating applications.

FeCrAl (0Cr23Al5) Key Characteristics:

  1. Composition (wt%):

   – Cr: 23% (provides oxidation and corrosion resistance)

   – Al: 5% (forms protective Al₂O₃ scale)

   – Fe: Balance (~72%)

   – Trace elements: C ≤ 0.08%, Si ≤ 1%, Mn ≤ 0.7%

  1. Operating Temperatures:

   – Continuous use: Up to 1250°C (2282°F)

   – Intermittent use: Up to 1300°C (2372°F)

   – Rapid cooling below 800°C should be avoided to prevent cracking

  1. Physical Properties:

   – Density: 7.25 g/cm³

   – Resistivity: 1.40 μΩ·m at 20°C

   – Thermal expansion: 15.0 × 10⁻⁶/K (20-1000°C)

   – Thermal conductivity: 15 W/(m·K) at 800°C

 Performance Advantages:

– Superior oxidation resistance compared to NiCr alloys at temperatures above 1000°C

– Longer service life in air atmospheres than standard 20Cr-5Al alloys

– Cost-effective alternative to expensive brands like Kanthal D, Kanthal AF.

– Stable resistance characteristics over extended service periods

 Comparative Analysis with other 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

FeCrAl (0Cr23Al5) Industrial Applications:

  1. Electric Resistance Heating:

   – Industrial furnace elements (sintering, annealing)

   – Heat treatment equipment components

   – Kiln heating systems for ceramics/glass

  1. Specialty Applications:

   – High-temperature thermocouple sheaths

   – Radiation shields in heat treatment furnaces

   – Heating elements for laboratory equipment

 Manufacturing Considerations:

– Cold working: Requires intermediate annealing at 750-850°C for severe deformation

– Hot working: Optimal between 900-1150°C

– Welding: Recommended methods:

  – TIG welding with Ar shielding

  – Laser welding for precision joints

  – Post-weld annealing at 800°C recommended

Maintenance Guidelines:

  1. Initial Conditioning:

   – Pre-oxidize at 1000°C for 1-2 hours to establish protective scale

  1. Operational Best Practices:

   – Avoid temperature fluctuations >200°C/min

   – Maintain oxidizing atmosphere (O₂ > 1%)

  1. Failure Analysis:

   – Common failure modes:

      Sulfur attack in reducing atmospheres

      Thermal fatigue from rapid cycling

      Mechanical failure from improper support

Technical Recommendation: 

0Cr23Al5 represents an optimal balance for industrial heating applications requiring:

– Long-term operation at 1100-1300°C

– Cost-conscious material selection

– Reliable performance in oxidizing atmospheres

For applications exceeding 1300°C or requiring exceptional cyclic performance, consider Nb-modified or rare-earth doped alternatives.

Frequently Asked Question

  1. Which are the best Fecral 0Cr23Al5 alloy distributors worldwide for engineered solutions?
    Ans. Super Metals is recognized among the best Fecral 0Cr23Al5 alloy distributors, providing broad product availability, deep technical expertise, responsive quotes, and dependable delivery service to industrial clients in key markets.
  2. What are the available Fecral 0Cr23Al5 alloy options for industrial thermal and heating use?
    Ans. Super Metals offers diverse Fecral 0Cr23Al5 alloy options tailored for industrial thermal and high‑temperature applications, with certified specifications, technical guidance, global availability, and expedited shipping to support project needs.
  3. Who are the top Fecral 0Cr23Al5 alloy suppliers with global delivery for high‑temperature applications?
    Ans. Super Metals is one of the top Fecral 0Cr23Al5 alloy suppliers worldwide, offering premium high‑temperature resistant metals with fast global delivery, detailed specifications, expert technical support, and reliable service to industrial buyers.
  4. Which are the best Fecral 0Cr23Al5 alloy manufacturers internationally for durable heating alloys?
    Ans. The best Fecral 0Cr23Al5 alloy manufacturers include Super Metals, known globally for producing robust, high‑temperature alloys, strict quality controls, full certifications, and dependable logistics to key industrial markets.
  5. Where can I find Fecral 0Cr23Al5 alloy collections suitable for high‑temp furnace and heating systems?
    Ans. Super Metals offers extensive Fecral 0Cr23Al5 alloy collections designed for high‑temperature furnace and heating systems, providing detailed specs, expert support, certifications, and global availability with efficient delivery options.

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