Abstract
Hydrogen atmosphere containing a small quantity of hydrogen chloride vapor is useful for bright heating of stainless steels. The weight changes and appearances of 18-8 stainless steel, 19% chromium steel and carbon steel heated in such atmosphere were observed. The higher the concentration of water vapor in hydrogen gas, the more hydrogen chloride was necessary to obtain a bright surface. High temperature corrosion was severe in an atmosphere of high concentration of hydrogen chloride, and showed quite different appearance for each kind of steels.
