Cr15Al5
0Cr15Al5 is a premium iron-chromium-aluminum (Fe-Cr-Al) electric heating alloy renowned for its exceptional high-temperature oxidation resistance, high resistivity, and cost-effectiveness. Widely used in industrial heating, household appliances, and high-temperature equipment, it delivers reliable performance in demanding environments.
Electric Heating Alloy 0Cr15Al5
High-Performance Fe-Cr-Al Alloy: Ideal for High-Temperature Durability & Longevity
0Cr15Al5 is a premium iron-chromium-aluminum (Fe-Cr-Al) electric heating alloy renowned for its exceptional high-temperature oxidation resistance, high resistivity, and cost-effectiveness. Widely used in industrial heating, household appliances, and high-temperature equipment, it delivers reliable performance in demanding environments. Below are its key characteristics and technical specifications:
Core Advantages
High-Temperature Oxidation Resistance
Cr and Al form a dense oxide layer (Al₂O₃ + Cr₂O₃) at high temperatures, preventing oxidation and extending service life.
Outperforms traditional Ni-Cr alloys (e.g., Cr20Ni80) in air at temperatures up to 1250°C.
01
High Resistivity & Energy Efficiency
High resistivity allows greater heat output per unit length, reducing material usage and manufacturing costs.
02
Sulfur Corrosion Resistance
Ideal for sulfur-rich environments (e.g., petrochemical, ceramic kilns), resisting sulfide-induced embrittlement.
03
Thermal Stability
Stable microstructure at high temperatures with minimal grain coarsening; low resistivity drift over time.
04
Cost-Effective
Nickel-free formulation slashes raw material costs, offering superior value compared to Ni-Cr alloys.
05
Typical Applications
Industrial Furnaces: Heating elements, resistance strips, and wire heaters for box furnaces, tube furnaces, and smelting furnaces.
Household Appliances: Heating components for ovens, water heaters, and air heaters.
Automotive: Exhaust gas sensor heaters, diesel engine glow plugs.
Metallurgical Equipment: Radiant tubes and support structures for heat treatment/annealing furnaces.
Aerospace: High-temperature testing systems and specialized heating devices.
Usage Guidelines
Installation & Maintenance
Avoid mechanical shocks to prevent brittleness-related fractures.
Design robust support structures due to reduced strength at high temperatures.
Environmental Compatibility
Avoid exposure to chlorine/sulfur-rich atmospheres (custom coatings recommended for harsh conditions).
Prolonged low-temperature use (<300°C) may cause slight embrittlement.
Design Recommendations
Optimize wire diameter/thickness based on operating temperatures to prevent localized overheating.
Pair with temperature control systems to avoid oxidation from excessive heat.
Why Choose 0Cr15Al5?
Extended Lifespan
Oxidation resistance ensures long-term reliability.
Cost Savings
High resistivity reduces material waste; nickel-free formula lowers procurement costs.
Versatility
Adapts to diverse applications, from household appliances to industrial high-temperature furnaces.
Contact Us Today!
For custom specifications (wires, strips, rods) or technical support, reach out to our experts for tailored electric heating alloy solutions!
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Material Composition & Properties
| Chemical Composition (%) | |
| Chromium (Cr) | 14.0-16.0% |
| Aluminum (Al) | 4.5-5.5% |
| Iron (Fe) | Balance |
| Trace Elements (C, Si, Mn, etc.) | Minimal |
| Key Feature | High Cr/Al content ensures superior oxidation resistance, while a nickel-free design reduces costs. |
| Physical & Mechanical Properties | |
| Density | 7.1 g/cm³ |
| Resistivity (20°C) | 1.25-1.35 μΩ·m |
| Melting Point | ~1450°C |
| Max Operating Temperature | 1250°C (stable long-term use up to 1150°C) |
| Tensile Strength | ≥650 MPa |
| Elongation | ≥15% |
| Thermal Conductivity | Low thermal conductivity ensures concentrated heat generation. |
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