316ss vrs 2205ss
316ss vrs 2205ss
(OP)
Hi All,
Can anyone advise why 316ss shouldn't be used for pressure vessels dor a domestic water system. We have a contractor stating it must be 2205 but will not/can not substantiate this (other than 2205 will cost more - more for them).
Thanks,
Can anyone advise why 316ss shouldn't be used for pressure vessels dor a domestic water system. We have a contractor stating it must be 2205 but will not/can not substantiate this (other than 2205 will cost more - more for them).
Thanks,





RE: 316ss vrs 2205ss
As far as 2205 Duplex Stainless Steel concerns, it has a superior corrosion resistance than 316 SS in specific corrosive environment, which does not seem to be your case. Accordingly, the 2205 seems an expensive alternative with no benefit.
Cheers,
gr2vessels
RE: 316ss vrs 2205ss
I did forget to mention this for for domestic hot water, so the wtaer will be around 80 degC (tempered down at basins) and is an "open" system so is subject to town mains and the quality is not controlliable.
RE: 316ss vrs 2205ss
RE: 316ss vrs 2205ss
2205 Duplex SS is resistant to this type of SCC.
RE: 316ss vrs 2205ss
"Whom the gods would destroy, they first make mad "
RE: 316ss vrs 2205ss
RE: 316ss vrs 2205ss
RE: 316ss vrs 2205ss
Maybe this there is something they are concerned with from a microbial stand point since this is an open loop system.
RE: 316ss vrs 2205ss
We have no control over the quality of town supply conditions, so whatever it is today could change tomorrow. The consultants specified 2205 after tender (scope change) but no0one knows why (even the consultant looking after this cant explain why.
The manufacture of these tanks has claimed he will not supply 316. Turns out because he has 2205 as standard imported vessels.
We will run with 2205 (better safe than sorry).
Thanks again