Chloride ions exist in the use environment. Chloride ions are widely present, such as salt/sweat stains/sea water/sea breeze/soil and so on. Stainless steel corrodes very quickly in the presence of chloride ions, even more than ordinary low carbon steel.
Therefore, there are requirements for the use environment of stainless steel, and it needs to be wiped frequently to remove dust and keep it clean and dry.
There is an example in the United States: a company used an oak container to hold a solution containing chloride ions. The container has been used for more than a hundred years. It was planned to be replaced in the 1990s. Because the oak material was not modern enough, the container was replaced with stainless steel 16 days later. Leakage due to corrosion. Not solution treated.
