FeCrAl 0Cr21Al6 Resistance Wire for Extreme Heat & Corrosive Environments | ASTM-Compliant
Description
FeCrAl 0Cr21Al6 resistance wire delivers unmatched performance in high-temperature applications (up to 1250°C) with superior oxidation resistance. Ideal for industrial heaters, chemical reactors, and energy systems.
Product Overview
FeCrAl 0Cr21Al6 resistance wire is an advanced iron-chromium-aluminum alloy optimized for stability in aggressive thermal and chemical conditions. Comprising 21% chromium (Cr) and 6% aluminum (Al), this alloy develops a robust alumina (Al₂O₃) oxide layer when exposed to heat, ensuring exceptional resistance to oxidation, sulfidation, and chlorine-induced corrosion. With a service temperature range of 200°C to 1250°C, it outperforms conventional Ni-Cr alloys in prolonged high-heat scenarios, particularly in sulfur-rich or acidic atmospheres common in petrochemical and power generation industries.
The alloy’s low resistivity drift (1.40 μΩ·m at 20°C) guarantees consistent electrical performance, while its high tensile strength (≥600 MPa) and ductility allow seamless fabrication into coils, heating elements, and precision thermocouples. Compliant with ASTM B603, DIN 17471, and JIS C2520, FeCrAl 0Cr21Al6 is engineered for global adaptability—suitable for Middle Eastern oil refineries, Southeast Asian semiconductor plants, and European renewable energy systems. Its lightweight density (7.0 g/cm³) further enhances cost-efficiency in aerospace and automotive sensor applications.
Technical Specifications
Chemical Composition
| Element |
Cr (%) |
Al (%) |
Fe (%) |
Trace Elements (Max %) |
| Content |
20-22 |
5.5-6.5 |
Balance |
C: 0.06, Si: 0.5, Mn: 0.4 |
Mechanical Properties
| Property |
Value |
| Tensile Strength |
600-700 MPa |
| Elongation (at 20°C) |
≥20% |
| Hardness (HV) |
200-230 |
Physical Parameters
| Parameter |
Value |
| Density |
7.0 g/cm³ |
| Melting Point |
1480°C |
| Resistivity (20°C) |
1.40 μΩ·m |
Standards Compliance
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ASTM B603: Electrical Resistance Alloys
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DIN 17471: High-Temperature Material Specifications
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JIS C2520: Japanese Industrial Standards
Applications
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Energy Sector: Heating elements in boilers, nuclear reactors, and geothermal systems.
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Chemical Processing: Corrosion-resistant coils for acid baths and reactors.
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Automotive: Exhaust gas recirculation (EGR) sensors and glow plugs.
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Consumer Appliances: Durable heating coils in industrial dryers and ovens.
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Aerospace: Lightweight wiring for high-temperature avionics.
FAQs
Q1: How does FeCrAl 0Cr21Al6 compare to Kanthal alloys?
A: FeCrAl 0Cr21Al6 offers higher aluminum content for better oxidation resistance at lower costs, ideal for sulfur-rich or cyclic heating environments.
Q2: What is the recommended maximum operating temperature?
A: 1250°C in oxidizing atmospheres. For reducing environments (e.g., hydrogen-rich), limit to 1000°C to prevent embrittlement.
Q3: Can this wire be used in marine environments?
A: Yes, its high chromium content resists chloride-induced pitting, making it suitable for offshore platforms and desalination systems.
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0Cr21Al6 FeCrAl Wire For Extreme Heat Corrosive Environments Images
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