Can the container still be used if its operating temperature exceeds the threshold that causes stainless steel sensitization?
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The sensitization temperature of stainless steel ranges from 400 to 850°C. If the operating temperature exceeds 400 degrees Celsius, can stainless steel (taking S30408 or S31603 as examples) still be used, provided that the strength requirements are met?
It depends on whether the material has a tendency to intergranular corrosion; if not, it doesn’t matter.
We are using it. It seems that 600 degrees or less should be sufficient.
It probably won’t work, as water contains chloride ions
Within the sensitization temperature range, stainless steel is relatively sensitive to CL, leading to intergranular corrosion; when stainless steel is used in certain equipment within this temperature range, it is common to control the medium used, or to employ composite materials