selection of piping material
selection of piping material
(OP)
Guys
I am looking for some guidelines on selecting piping material for process gases and chemicals ie some sort of a chemical compatability chart.Could anyone give some leads as to where I can get some information on this?
I am looking for some guidelines on selecting piping material for process gases and chemicals ie some sort of a chemical compatability chart.Could anyone give some leads as to where I can get some information on this?





RE: selection of piping material
A word of caution, different tables may have different recommendations.
If you find something on-line, please let me know.
BD
RE: selection of piping material
If you are not well versed in corrosion and material fundamentals I would recommend soliciting the service of a consultant to get you started.
www.nace.org They have databases “Cor-Sur is one” and other books with corrosion data.
www.copper.org Everything you wanted to know about copper and its’ alloys. They have links to all the nickel and S/S alloys’ .
www.corrosion.com This site has some very good information
There are many others available once you define you primary areas of interests that you can purse.
Piping design in this day and time has become a much more rigorous endeavor than just a few years ago.
RE: selection of piping material
RE: selection of piping material
I have a handbook of corrosion data from ASM International.
what different between "Corrosion data from ASM with The Corrosion Data Survey from NACE?
RE: selection of piping material
ASM is a good source of for every thing you want to know about materials. The also offer a correspondence course in corrosion fundamentals.
Both are good resources as they are very thorough and warn you about some of the subtle and not so subtle things that can happen with materials when doing design work.
If you get stuck or there are any questions with your material selections please post
Good luck
RE: selection of piping material
RE: selection of piping material
Brine can run into chloride corrosion problems with the stainless steels and might force you into exotic alloys. I'd look at plastics/composites, the choice subject to expected operating pressures/temperatures.
Joe
RE: selection of piping material
Brine will corrode CS, but that might not be a concern with thicker pipe and regular shutdowns.
Austenitic Stainless is out.
Glass lined and/or plastic lined carbon steel are options.
Plastic pipes of various kinds are options too.
Exotic alloys, maybe even including duplex might be worth considering if you have the finances.
Cheers
Rob
RE: selection of piping material
RE: selection of piping material
However, if there's high residual stress [e.g. socket welds], high pressure stress, other contaminants like sulfides, then those guidelines don't hold.
304SS is not resistant to SCC - and that would be the prime risk in a chlorinated water service.
Ozanated, I can't speak about.
Cheers
Rob