Urgent need! The concentration of chloride ions in water and the degree of corrosion of stainless steel pipes
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The impact of chloride ion concentration in water on SS304, 316, 316L, and 2205 materials – what level of chloride ions is suitable for 316L and what level is suitable for 304? Are there any tables or empirical values available? Thank you, Great Gate! It’s urgent!
You can search on Baidu for 【Comparison of the resistance to chloride and sulfide ions in 304 and 316L stainless steels】
Here is a simple criterion for judgment; it is called simple because this table takes into account only two influencing factors: chloride ion content and temperature. This table is for reference only.
You’ve asked the right person. SS304 is commonly used in the instrument air pipelines of the oil and gas industry; it is an austenitic stainless steel that resists hydrogen sulfide but not chloride ions； 316 and 316L are also austenitic stainless steels; they are of higher quality than SS304 and resistant to small amounts of chlorides ； 2205 is a duplex stainless steel, the highest quality grade, resistant to hydrogen sulfide, carbon dioxide, and chlorides
Where does the data for 5# come from?
Is 316L suitable for chloride concentrations below 10,000 ppm? Is 20,000 ppm bidirectional stainless steel okay?
It is recommended to use duplex stainless steel; for austenitic stainless steel, the standard requirement for chloride content is no more than 10 ppm. And our actual experience within the station is the same as well