0Cr25Al5 Iron-Chromium-Aluminum Heating Alloy Wire
Professional supplier of 0Cr25Al5 FeCrAl heating alloy fine wires, wire diameter 0.08-3mm, with straightening, cutting, and customization services.
Material Overview
0Cr25Al5 is an iron-chromium-aluminum electric heating alloy with excellent high-temperature oxidation resistance and high electrical resistivity. It maintains strong oxidation resistance at temperatures up to 1400°C, costs less than nickel-chromium alloys, and is the ideal heating material for high-power industrial furnaces.
0Cr25Al5 alloy wire is produced via electric arc furnace melting followed by hot rolling, pickling, and cold drawing. A dense Al2O3 oxide layer forms on the surface, effectively preventing further oxidation and extending service life.
Chemical Composition and Physical Properties
Chemical Composition of 0Cr25Al5 Alloy Wire (Mass Fraction %)
| Element | Content Range |
|---|---|
| Cr | 23.0-26.0 |
| AI | 4.5-5.5 |
| Fe | Remaining |
| Yes | ≤1.00 |
| Mn | ≤0.70 |
| C | ≤0.08 |
Physical properties of 0Cr25Al5 alloy wire
Resistivity (20°C)
1.45 Ω·mm²/m
Temperature Coefficient of Resistance
≤100×10⁻⁶/°C
Density
7.20 g/cm³
Melting point
1480-1530°C
Maximum Operating Temperature
1400°C (in air)
Available Wire Specifications
Wire diameter range
0.08mm - 3.0mm
Delivery Status
Hard-drawn (cold-drawn) / Annealed
Packaging Format
Coiled / Straight (Cut-to-Length)
Execution Standard
GB/T 1234
Core Product Advantages
High-temperature oxidation resistance
A dense Al₂O₃ oxide layer forms on the surface, maintaining excellent oxidation resistance even at 1400°C.
high resistivity
Resistivity reaches 1.45 Ω·mm²/m, higher than nickel-chromium alloy, reducing material usage.
Low cost
Nickel-free; raw material costs are significantly lower than those of nickel-chromium alloys like Cr20Ni80.
Low density, lightweight
Density is only 7.20 g/cm³, approximately 15% lighter than nickel-chromium alloy, reducing equipment load.
Industries
- High-power industrial electric furnace and heat treatment furnace heating elements
- Heating elements for ceramic sintering furnaces and glass melting furnaces
- Steel industry heating furnaces and annealing furnaces
- Lab High-Temperature Muffle Furnace, Box Furnace
Processing & Delivery
Complementary Services
- Wire straightening
- Custom Slitting to Length
- Provide material certification
- Technical Support & Selection Consulting
Delivery Timeline
Standard specifications in stock; ships in 3-5 business days. Custom special specifications require production; lead time is 7-15 business days. Nationwide delivery supported; expedited service available.
Frequently Asked Questions (FAQ)
What is the maximum operating temperature for 0Cr25Al5 alloy wire?
0Cr25Al5 alloy wire has a maximum operating temperature of 1400°C in air, with short-term use up to 1450°C. Due to the formation of an Al2O3 protective film, its high-temperature oxidation resistance exceeds that of most nickel-chromium alloys.
What are the differences between FeCrAl and NiCr alloys?
Iron-chromium-aluminum alloys offer low cost, high resistivity, and low density but suffer from brittleness, difficult machining, and poor low-temperature toughness. Nickel-chromium alloys are more expensive but provide superior toughness, ease of machining, and excellent low-temperature performance. Iron-chromium-aluminum is ideal for high-power fixed electric furnaces, while nickel-chromium is better suited for precision, small-scale heating elements.
Can 0Cr25Al5 alloy wire be soldered?
0Cr25Al5 alloys have poor weldability due to aluminum content, which readily forms aluminum oxide inclusions. Mechanical connections (e.g., crimping, threading) are recommended over welding. If welding is required, special processes and thorough oxide film removal are necessary.
What is the resistivity of 0Cr25Al5 alloy wire?
The 0Cr25Al5 alloy has a resistivity of 1.45 Ω·mm²/m at 20°C, which is approximately 33% higher than that of Cr20Ni8 (1.09 Ω·mm²/m). This allows for reduced material usage at the same power level.
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