Iron-Chromium-Aluminum Heating Wire
Iron-Chromium-Aluminum Heating Wire The main chemical components are iron, chromium, and aluminum, and it is in the form of wire, hence it is called Iron-Chromium-Aluminum wire.
Iron-Chromium-Aluminum wire can be classified by cross-sectional shape into Iron-Chromium-Aluminum round wire, Iron-Chromium-Aluminum flat wire, etc.
Product Name: Iron-Chromium-Aluminum Heating Wire;
Product Classification: 1Cr13AL4, 1Cr21AL4, 0Cr21AL5, 0Cr25AL5, 0Cr21AL6Nb, 0Cr27AL7Mo2, HRE;
Product Specifications: φ0.1-16mm (Common specifications are in stock; non-standard specifications require advance ordering). Flat wire requires customization;
Production Cycle: Approximately 5-7 days;
Product Condition: Hard/Half-hard/Soft;
Product Applications:Iron-Chromium-Aluminum Heating Wire is widely used in metallurgical machinery, ceramics, glass, far-infrared devices, electronic components, loads, electric heaters, industrial electric furnaces, etc..
Characteristics of Iron-Chromium-Aluminum Heating Wire:
1. High operating temperature in air
The HRE alloy among iron-chromium-aluminum heating alloys can reach a maximum operating temperature of 1400°C, while the Cr20Ni80 alloy among nickel-chromium heating alloys has a maximum operating temperature of 1200°C.
2. Long service life
Under the same high operating temperature in air, the life of iron-chromium-aluminum elements can be 2-4 times that of nickel-chromium elements.
3.
High surface load
Due to the high allowable temperature and high resistivity of iron-chromium-aluminum alloys, the surface load of the element can be higher, which not only saves material but also makes the element smaller.
4. Good oxidation resistance
The Al2O3 oxide film formed on the surface of iron-chromium-aluminum alloy has a dense structure and good adhesion to the substrate, making it less prone to contamination caused by spalling. In addition, Al2O3 has high electrical resistivity and a high melting point, so these factors determine that the Al2O3 oxide film has excellent oxidation resistance. The carburization resistance is also superior to that of Cr2O3 formed on the surface of nickel-chromium alloys.
5. Small specific gravity
The specific gravity of iron-chromium-aluminum is smaller than that of nickel-chromium, meaning that iron-chromium-aluminum is lighter than nickel-chromium of the same specification.
6. High resistivity
The resistivity of iron-chromium-aluminum is higher than that of nickel-chromium, allowing for the selection of larger cross-section specifications for the element, which is beneficial for extending the service life of the element. This is especially important for fine wires. When the resistivity is high, the component size can be smaller, saving material.
7. Good sulfur resistance and resistance to corrosion by certain atmospheres
8. Low price
Since iron-chromium-aluminum does not contain scarce nickel, the price is much lower than that of nickel-chromium.
Disadvantages of Iron-Chromium-Aluminum Heating Wire:
1. Low high-temperature strength
As the temperature increases, the plasticity of iron-chromium-aluminum increases, making the element prone to deformation under high temperature and high load, and difficult to repair after deformation.
2. Embrittlement after high-temperature use
Iron-chromium-aluminum heating wire tends to become brittle after being used at high temperatures for a long time, and the embrittlement is caused by the growth of grains. In addition, the heating wire is also prone to embrittlement at temperatures between 400°C and 700°C, so it should be avoided from being bent at this temperature.
3. Poor processability
Iron-chromium-aluminum heating wire has poor processability, is not easy to draw, and is difficult to weld.
