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Discussion Forums - The Hendrix Group
HomeHomeDiscussionsDiscussionsGeneral Corrosi...General Corrosi...Natatorium atmosphere material selectionNatatorium atmosphere material selection
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11/18/2004 9:00 AM
 
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I need help in deciding between a non-SCC (stress corrosion cracking) stainless steel (SS316/317) and aluminum for the construction of ductwork and air handling equipment in a natatorium environment. Does anyone have some technical information that can help me choose between these two materials based on corrosion or manufacturablility of components? (I am reasonably well- informed in stainless steels, but I am lacking in aluminum knowledge). I would be very grateful for any data that could support a choice. Thanks for your time!
 
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11/19/2004 9:00 AM
 
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JW: We're not sure what you mean by non-scc stainless steel (316/317SS). These two alloys are certainly susceptible to chloride SCC at elevated temperatures. David Hendrix The Hendrix Group Inc.
 
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11/22/2004 9:00 AM
 
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My apologies. You are correct; at elevated temperatures, both stainless steels will exhibit SCC. I plan to maintain the natatorium at close to 80-85F, so I believe that the SS316/317 alloys are less suseptible to SCC at those temperatures, yet I know are still subject to corrosion. (bad phrasing previously on my part) I guess the help I need is in deciding between aluminum or one of the SS alloys for the construction of ductwork and air handling equipment. I just need help (data) in choosing the material which will be most reliable in the long term (30 yrs) in a very athletically-active natatorium environment. Thanks so much for responding so quickly, David. I am grateful for your help. Please let me know if I can clarify anything further. Regards, JW
 
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11/22/2004 9:00 AM
 
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JW: Based on the information you've provided it's not possible (nor good practice) to provide recommendations for a 30-year life for the ductwork. Too much depends on the local atmosphere. My concern with both alloys over 30-years is their long term resistance to aqueous bleach solutions. If condensing conditions can be avoided, then either alloy may work. Hope this helps! David Hendrix The Hendrix Group Inc.
 
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