What is the corrosion resistance of 316 stainless steel?
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To what extent is stainless steel of type 316 resistant to acid corrosion?
Stainless steel made of 316 material has good resistance to intergranular corrosion, but it is particularly sensitive to ions such as chloride and sulfur ions.
The moderator said that since my solution contains ammonium chloride, it won’t work well. I’m not sure what is the mechanism by which chloride ions cause corrosion of 316 stainless steel. 2# lxq700918
Is there a detailed comparison of 316 and 317 stainless steels? I need it too
I can’t find any related topics from before on this forum; otherwise I could learn from them**
http://bbs.hcbbs.com/thread-585655-1-4.html This issue discusses the mechanism by which chloride ions cause corrosion in stainless steel; you can go to the corrosion section to find relevant information.
Thank you for the link provided by the user on floor 6; it offers a quite in-depth analysis of the principles behind chloride ions causing corrosion of stainless steel. However, there is no information on the corrosion rate of stainless steel under low concentrations of chloride ions; knowing the corrosion rate is necessary to determine the time at which stainless steel equipment will need to be replaced
I would like to learn more about this topic. I plan to produce nickel sulfate crystals in the future, and I’m wondering whether 316 stainless steel sheets can be used as evaporators
Regardless of the results obtained by HaiChuan, it is necessary to conduct experiments: simulate acid and salt concentrations as well as material temperatures, and test the 316L specimens for 24–120 hours to measure parameters such as corrosion rate, in order to determine whether the material is suitable. The specific circumstances of each material vary, so it’s not possible to apply someone else’s experience directly; what’s needed is a guide to avoid taking unnecessary detours!
Thank you to the moderator for the reminder; it is indeed very important to conduct simulation experiments. My biggest problem right now is that after carrying out this hanging-plate experiment for a week, I didn’t observe any effect of weightlessness at all. 9# jothan
Test conditions for the 316 coupon: pH 5.5, a solution containing 5.5% each of ammonium chloride and potassium chloride, temperature of 70 degrees. The coupon lost no weight after being exposed to these conditions for a week; I’m not sure why