One. Specifications: thickness × width (0.05--0.1) × (5--250) mm
two. Product series: 0Cr13Al4, 0Cr21Al4, 0Cr21Al6, 0Cr25Al5, 0Cr21Al6Nb, 0Cr27Al7Mo2, etc.
Third, the characteristics of iron-chromium-aluminum electrothermal alloy:
1. High temperature in the atmosphere
The highest temperature of HRE alloy in iron-chromium-aluminum electrothermal alloy can reach 1400 °C, while the maximum temperature of Cr20Ni80 alloy in nickel-chromium electrothermal alloy is 1200 °C.
2, long service life
At the same higher operating temperatures in the atmosphere, the life of the iron-chromium-aluminum component can be 2-4 times that of the nickel-chromium component.
3, high surface load
Since the iron-chromium-aluminum alloy allows high temperature and long life, the surface load of the component can also be higher, which not only makes the temperature rise but also saves the alloy material.
4, good oxidation resistance
The Al2O3 oxide film formed on the surface of the iron-chromium-aluminum alloy is dense in structure, and has good adhesion to the substrate, and is not easy to repel the falling water to cause pollution. In addition, Al2O3 has a high electrical resistivity and a high melting point. These factors determine the excellent oxidation resistance of the Al2O3 oxide film. The carburization resistance is also better than the Cr2O3 formed on the surface of the nichrome alloy.
5, the proportion is small
Iron-chromium-alloys have a lower specific gravity than nickel-chromium alloys, which means that the use of iron-chromium-aluminum is more economical than nickel-chromium when making the same components.
6, high resistivity
Iron-chromium-aluminum alloys have higher electrical resistivity than nickel-chromium alloys. When designing components, larger-sized alloy materials can be used, which is beneficial to extend component life. This is especially important for fine-alloy wires.
7, good sulfur resistance
Iron-chromium-aluminum has good corrosion resistance to sulfur-containing atmospheres and surfaces contaminated with sulfur-containing substances, while nickel-chromium is severely eroded.
8, the price is cheap
Iron-chromium-aluminum is much cheaper than nickel-chromium because it does not contain scarce nickel.
9. The disadvantage of iron-chromium-aluminum alloy is that the high-temperature strength is low, and the plasticity increases with the increase of temperature, causing component deformation.
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