Steel will not produce corrosion, pitting, rust. Of course. However, the real stainless steel is very hot, which is rarely seen. Most of them are copper or iron plated. The heat conduction of stainless steel is not as good as that of copper and iron. The former unit of distillation water tank, which used stainless steel electric heating tube, burned several pieces at the beginning, [Fried] before the manufacturer reprocessing.