Sulfuric Acid Material
Sulfuric Acid Material
(OP)
For %80 sulfuric acid application, temperature is around
at max 43 deg. C , which material do you recommend?
I am stuck between Alloy 20 and Hastelloy C series.
Pressure : 1 bar , no impurities.
at max 43 deg. C , which material do you recommend?
I am stuck between Alloy 20 and Hastelloy C series.
Pressure : 1 bar , no impurities.





RE: Sulfuric Acid Material
RE: Sulfuric Acid Material
https://www.nickelinstitute.org/~/media/files/tech...
RE: Sulfuric Acid Material
You need to know all of the impurities before you select a material, oxidizing species are an issue (Cu, Fe, NO, Cl..)
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
"Even,if you are a minority of one, truth is the truth."
Mahatma Gandhi.
RE: Sulfuric Acid Material
http://www.haynesintl.com/alloys/alloy-portfolio_/...
http://www.haynesintl.com/alloys/alloy-portfolio_/...
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
RE: Sulfuric Acid Material
I wouldn't want to use rubber at this temp but there are plenty of resin systems that would work well.
For this they would use a special glass, structural resin, and (maybe) apply a liner of a different resin.
Google "FRP sulfuric acid"
composites-cis.com/materials/en/15.pd
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
RE: Sulfuric Acid Material
It may be worthwhile to know what're the components involved.
Here're some links which might be useful.
Thanks.
http://www2.dupont.com/Clean_Technologies/es_MX/as...
ZeCor -Z alloy: https://www.atimetals.com/news/corrosion-conferenc... pdfs/PAPER_5D_GRUBB.pdf
http://www.parrinst.com/wp-content/uploads/downloa...
http://www.corrosionmaterials.com/documents/dataSh...
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
All provided answer are personal opinions or personal judgements only. It's not connected with any employers by any means.
RE: Sulfuric Acid Material
The problem with almost all of these alloys that have been batted about is that their useful concentration range is limited. They will either go to hell at 70%, or at 90%. The exception is B-3, but the cost is steep.
I guess that the question that comes to mind is why do you have 80% acid (sounds odd), and can it ever be more concentrated, or less concentrated?
Look at FRP.
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
I searched many literature and websites and have a great database.
Mostly it looks like Alloy20 would be fine. Pls. check the best doc I could find
from carpenter.
However I do agree the concern for higher and lower figures of
% and temp.
I have asked to a few foundries and valve producers
having experience in corrosion field.
If we go to plastic materials, do you recommend FRP?
PVC or others?
Thanks for time and discussion.
RE: Sulfuric Acid Material
You need to consider who welds and casting will perform, not just mill annealed and pickled plate.
The FRPs are mad with various epoxy resins. I believe that Ashland chemical has some very good references.
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
RE: Sulfuric Acid Material
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P.E. Metallurgy, Plymouth Tube
RE: Sulfuric Acid Material
https://www.atimetals.com/news/corrosion-conferenc...
RE: Sulfuric Acid Material
They are not generally available. I have made Zecor tubing in the past.
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P.E. Metallurgy, Plymouth Tube