John: The potential for chloride SCC of the 300 series stainless steels increases with increasing chlorides, stress level and temperature. We consider it dangereous to place a go no-go on chloride levels as a measure of protection, based on their ability to concentrate. Making chloride SCC decisions based on temperature is safer. Typically temperaures > 120F-140F are needed for chloride SCC. Below those temperatures , pitting is a viable corrosion mechanism. Regarding your request for hard facts and results of studies, that is more appropriate for a consulting engagement, based on the time requirements. Also, those "hard facts" and studies need to be interpreted in view of your specific design, environment and operation. Hope this helps! David Hendrix The Hendrix Group Inc.