Electrical Resistance Heater Wire 0Cr21Al4 For Industrial Furnace Heating Elements

Introduction:

0Cr21Al4 Heater Wire is a wire made of 0Cr21Al4 alloy, which has certain elasticity and plasticity. Its cross-sectional shape is usually circular or rectangular, and different sizes and lengths can be customized according to specific needs.

0Cr21Al4 Heater Wire is composed of iron (Fe), chromium (Cr), aluminum (Al) and other small amounts of elements. It has excellent high temperature resistance and resistance properties and is widely used in thermal equipment and electric furnace heating elements.

0Cr21Al4 Heater Wire has excellent oxidation resistance and can form a dense oxide protective film in high temperature environments, effectively preventing further oxidation reactions. At the same time, it also has good mechanical properties and weldability, making it popular in the manufacture and application of heating elements.

0Cr21Al4 Heater Wire is widely used in industrial heating fields, such as electric furnace heating coils, hot blast furnace heating elements, industrial ovens, electric heaters and heat treatment equipment. With its excellent antioxidant properties and resistance characteristics, 0Cr21Al4 Heater Wire is  able to work stably in high temperature environments and provide uniform heating effects.

Parameter:

• Chemical composition:

Chromium (Cr): approximately 21% by mass
Aluminum (Al): approximately 4% by mass
Other elements: mainly iron (Fe) and impurity elements, such as manganese (Mn), silicon (Si), etc.

• Physical properties:

Density: approximately 7.25 g/cm3
Melting point: approximately 1500 degrees Celsius
Thermal Conductivity: Approximately 13-15 Watts/meter Kelvin (around room temperature)
Linear expansion coefficient: approximately 13×10^-6/degrees Celsius (within room temperature range)

• Mechanical behavior:

Tensile strength: about 600-800 MPa
Yield strength: about 280-450 MPa
Elongation: approximately 10-25% (at room temperature)

Characteristic:

• High temperature resistance: 0Cr21Al4 furnace bar can maintain stable performance in high temperature environments.
• Antioxidant properties: Form a dense oxide protective film to effectively prevent further oxidation reactions.
• Mechanical properties: Has certain elasticity and plasticity.
• Resistance performance: Provide stable resistance characteristics.

Advantage:

• High stability: able to work stably for a long time in high temperature environments.
• Good anti-oxidation performance: It can effectively resist the impact of oxidation on material properties.
• Easy to process and weld: has good plasticity and weldability.

Specific applications:

1. Furnace Heating Coil: The heating element in an industrial electric furnace.
2. Hot air stove heating element: The heating element in the hot air stove provides high-temperature air.
3. Industrial oven: used in industrial heating and baking equipment.
4. Electric heater: Heating element found in appliances and industrial equipment.
5. Heat treatment equipment: Heating elements during metal heat treatment.

Q&A:

What is the maximum operating temperature of 0Cr21Al4 heater wire?
The maximum working temperature of 0Cr21Al4 heater wire is generally around 1300℃.

What is the difference between 0Cr21Al4 heater wireand 0Cr19Al3 heater wire?
0Cr21Al4 gheater wire has a higher chromium content than 0Cr19Al3 heater wire, so it is slightly better than 0Cr19Al3 heater wire in terms of anti-oxidation performance and high temperature resistance.

What are the processing methods of 0Cr21Al4 heater wire?
0Cr21Al4 heater wire can be processed by cold drawing, cold rolling and hot rolling.