201 stainless steel coil has a similar resistance to general corrosion as the unstable Nichrome 304. Prolonged heating of 201 stainless steel coils in the temperature range of chromium carbide degrees may affect alloy 321 stainless steel sheets and 347 in harsh corrosive media. 201 stainless steel coils are mainly used in high temperature applications, which require the material to have strong sensitization resistance to prevent intergranular corrosion at lower temperatures.