Electric heating wire is a common heating element that plays an important role in people's lives. Iron chromium aluminum alloy electric heating wire and nickel chromium alloy electric heating wire are the two most commonly used types of electric heating wire, each with its own advantages and disadvantages. Below is a specific summary and explanation:

1. Iron chromium aluminum alloy heating wire

The advantages of iron chromium aluminum alloy electric heating wire: high operating temperature, the highest operating temperature of iron chromium aluminum alloy electric heating wire can reach 1400 ℃ according to experiments. Iron chromium aluminum alloy electric heating wire has a long service life, high electrical resistivity, high surface composite, and good oxidation resistance.

The disadvantage of iron chromium aluminum alloy electric heating wire is that its strength is low in high temperature environments. As the temperature increases, the plasticity of iron chromium aluminum alloy electric heating wire will increase. In other words, iron chromium aluminum alloy electric heating wire is prone to deformation at high temperatures and is difficult to repair after deformation.

2. Nickel chromium alloy heating wire

The advantages of nickel chromium alloy electric heating wire are high strength in high-temperature environments, resistance to deformation and structural changes during long-term high-temperature operation, and good room temperature plasticity of nickel chromium alloy electric heating wire, making repair after deformation relatively simple. In addition, nickel chromium alloy heating wires have high emissivity, no magnetism, good corrosion resistance, and long service life.

Disadvantages of nickel chromium alloy heating wire:

The operating temperature cannot reach the level of the previous electric heating wire. The manufacturing of nickel chromium alloy electric heating wire requires the use of nickel, which is a metal with a higher price than iron, chromium, and aluminum. Therefore, the manufacturing cost of nickel chromium alloy electric heating wire is relatively high, which is not conducive to cost control.