FeCrAl resistance wire is a type of alloy wire primarily composed of iron (Fe), chromium (Cr), and aluminum (Al). This wire is commonly used in heating elements and applications that require high-temperature resistance. It is well known for its high resistivity, excellent oxidation resistance, and durability at elevated temperatures.
Applications of FeCrAl Resistance Wire:
Heating Elements: Used in industrial furnaces, space heaters, toasters, and other electric heating appliances.
Temperature Sensors: Employed in thermocouples for high-temperature measurement.
Electrical Heaters: For applications requiring steady, high heat generation, like in boilers, ovens, or kilns.
Aerospace and Automotive: In components where high-temperature resistance is needed.
Key Features of FeCrAl Resistance Wire:
Composition:
The alloy typically contains around 60-70% iron (Fe), 20-30% chromium (Cr), and 5-15% aluminum (Al). This combination provides a good balance of high resistivity and oxidation resistance.
High-Temperature Performance:
FeCrAl wire can withstand temperatures up to 1400-1600°C (2550-2900°F), depending on the specific alloy composition. This makes it ideal for high-temperature heating applications.
Oxidation Resistance:
The presence of chromium and aluminum in the alloy helps form a protective oxide layer on the wire's surface, which prevents further oxidation and prolongs its lifespan, even in environments with high heat and oxygen.
Electrical Resistance:
The wire's electrical resistance increases with temperature, making it an ideal choice for use in heating elements, as it allows for precise control over heat output based on the current passing through the wire.
Durability:
FeCrAl wire is known for its long service life compared to other resistance alloys, such as Nichrome (NiCr), especially at higher temperatures.
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