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material for construction for brine 2
- Thread starter KCAn
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Making an assumption regarding the contents of the "brine," the answer would be no. Typical materials are lined carbon steel and FRP.
Steve Jones
Corrosion Management Consultant
All answers are personal opinions only and are in no way connected with any employer.
Steve Jones
Corrosion Management Consultant
All answers are personal opinions only and are in no way connected with any employer.
EdStainless
Materials
Since this is a storage tank I would guess that this is exposed to air, and in that case SS would be very expensive to move to a high enough alloy to resist corrosion at 80C.
Lined CS is the most common. There are high temp multi-layer epoxy lining systems used for this type of application.
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P.E. Metallurgy, Plymouth Tube
Lined CS is the most common. There are high temp multi-layer epoxy lining systems used for this type of application.
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P.E. Metallurgy, Plymouth Tube
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- #4
When you say "brine", what do you mean? 12% NaCl in water and nothing else? Or is there dissolved gasses? Will the headspace be exposed to air? Whats the pH? Etc. Etc. Etc.
Mind, there really aren't many answers to the above that would make a 300 series acceptable in a concentrated brine solution at 80 c. ClSCC is a very real possibility at that temperature.
Nathan Brink
Mind, there really aren't many answers to the above that would make a 300 series acceptable in a concentrated brine solution at 80 c. ClSCC is a very real possibility at that temperature.
Nathan Brink
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moltenmetal
Chemical
I'd go one step further and say that there are NO conditions which would make 300 series stainless steels acceptable under these conditions, other than operation 1 day per year with a total disassembly and clean-out between operations perhaps.
EdStainless
Materials
The only applications where a 3xx stainless would be in a reducing environment (No oxygen) and pH >10.
At pH=8, T80=C 316L will have a limit of about 200ppm Cl open to air.
A 6%Mo superaustenitic would not handle 12% NaCl at 80C.
You would have to go to a Cr-Mo-Ni alloy such as C22, 686, or 59.
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P.E. Metallurgy, Plymouth Tube
At pH=8, T80=C 316L will have a limit of about 200ppm Cl open to air.
A 6%Mo superaustenitic would not handle 12% NaCl at 80C.
You would have to go to a Cr-Mo-Ni alloy such as C22, 686, or 59.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
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