300 series stainless and urea.
300 series stainless and urea.
(OP)
We may be adding urea tanks into the engine rooms of our tug boats in the near future. While polyethylene is a great choice for in terms of chemical compatibility, I don't like the idea of using plastic tanks in a space that has a high fire potential. Are there any major corrosion issues using 304L or 316L stainless steels in a 30% aqueous solution of urea?





RE: 300 series stainless and urea.
However the risk of contamination is serious. A small amount of salt water in the tank would cause serious corrosion.
Perhaps you should look at using 2205. This is a duplex stainless and it is very strong, which allows for a much thinner tank.
This alloy would stand up much better if exposed to chlorides.
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P.E. Metallurgy, Plymouth Tube
RE: 300 series stainless and urea.
RE: 300 series stainless and urea.
You could build a silo out of 3/16" 2205, that is way thicker than is needed.
Stiffness is a design issue, it isn't uncommon to see SS tanks built external stiffeners.
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P.E. Metallurgy, Plymouth Tube
RE: 300 series stainless and urea.
Might be worth a read.
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RE: 300 series stainless and urea.