Fe-Cr-Al alloy resistance wire VS Nickel chromium alloy wire
1. The advantage of the Fe-Cr-Al alloy resistance wire is its high operating temperature. The experiment shows that the maximum operating temperature of the Fe-Cr-Al alloy resistance wire can reach 1400°C. The Fe-Cr-Al alloy resistance wire has long service life, high resistivity, high surface compounding, and good oxidation resistance.
The disadvantage of the Fe-Cr-Al alloy resistance wire is its low strength in high temperature environments. As the temperature increases, the plasticity of the Fe-Cr-Al alloy resistance wire will increase, which means that the Fe-Cr-Al alloy resistance wire is prone to deformation at high temperatures. And it is not easy to repair after deformation.
2. The advantage of nickel chromium alloy wire is high strength in high temperature environment, long-term high temperature operation is not easy to deform, and it is not easy to change the structure, and the normal temperature plasticity of nickel chromium alloy wire is good, and the repair after deformation is relatively simple. In addition, the nickel chromium alloy wire has high emissivity, non-magnetic, good corrosion resistance and long service life.
The disadvantage of nickel chromium alloy wire is that the operating temperature cannot reach 1400°C. The manufacture of nickel chromium alloy wire requires the use of nickel. The price of this metal is higher than that of iron, chromium and aluminum. Therefore, the manufacturing cost of nickel chromium alloy wire is relatively high, which is not conducive to cost control.