0Cr21Al6Nb
0Cr21Al6Nb is a high-performance iron-chromium-aluminum (Fe-Cr-Al) electrical heating alloy enhanced with niobium (Nb). Specifically engineered for extreme high-temperature environments, its chemical composition (21% Cr, 6% Al, trace Nb) delivers exceptional oxidation resistance and long-term durability.
Electrical Heating Alloy 0Cr21Al6Nb Product Introduction
Material Overview
0Cr21Al6Nb is a high-performance iron-chromium-aluminum (Fe-Cr-Al) electrical heating alloy enhanced with niobium (Nb). Specifically engineered for extreme high-temperature environments, its chemical composition (21% Cr, 6% Al, trace Nb) delivers exceptional oxidation resistance and long-term durability.
Key Features
Superior Thermal Endurance
✓ Maximum operating temperature: 1400°C
✓ Continuous service temperature: 1350°C
Efficient Electrothermal Conversion
✓ Resistivity: 1.45±0.05 μΩ·m enables rapid heating
✓ Energy-saving performance reduces power consumption by 15-20%
Environmental Resistance
✓ 40% better oxidation resistance vs conventional alloys
✓ Outstanding sulfur corrosion resistance
✓ Excellent anti-carburization properties
Mechanical Reinforcement
✓ Room temperature tensile strength ≥650 MPa
✓ 30% improvement in high-temperature creep strength
Technological Advantages
Self-healing Al₂O₃ protective layer (3-5μm thickness)
Excellent cold workability for complex shapes
Superior weldability (TIG/MIG compatible)
Typical Applications
Ultra-high temperature industrial furnaces
Aerospace thermal components
Specialty glass processing equipment
Chemical reactor heating systems
Premium appliance heating elements
Usage Guidelines
Recommended installation tension: 1.5-2% of element length
Initial activation requires stepwise heating (300°C/500°C/800°C with 30min holds)
Avoid direct contact with copper/nickel-based materials
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Performance Comparison
|
Property |
0Cr21Al6Nb |
Traditional 0Cr25Al5 |
Improvement |
|
Max Temperature |
1400°C |
1250°C |
+12% |
|
Resistivity Stability |
±2% |
±5% |
60% better |
|
Thermal Shock Cycles |
>500 |
300 |
+67% |
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