Does the Stainless Steel E316 resist seawater and Temp??
Does the Stainless Steel E316 resist seawater and Temp??
(OP)
My name is Bassam, i am an industrial engineering student, meanwhile i am in a research about Stainless Steel.
the main subject of this project is how many years could the Stainless Steel live in seawater, particulary the Stainless Steel E316.
i will be so glad if you let me know whether this kind of material could resist seawater, and humidity??? could the properties of this material remain the same under temp. 50 c
???
if this isnt the proper material to use under seawater, could you please recommend me of the best material???
Awaiting forward to your kind reply.
BAssAM
the main subject of this project is how many years could the Stainless Steel live in seawater, particulary the Stainless Steel E316.
i will be so glad if you let me know whether this kind of material could resist seawater, and humidity??? could the properties of this material remain the same under temp. 50 c
???
if this isnt the proper material to use under seawater, could you please recommend me of the best material???
Awaiting forward to your kind reply.
BAssAM





RE: Does the Stainless Steel E316 resist seawater and Temp??
If you are considering a welded application, use Type 316L which has a lower carbon content.
Either should be able to handle the 50C temperature without detriment.
RE: Does the Stainless Steel E316 resist seawater and Temp??
i mean will not the E316 resist the Oxidization and rust forming?????
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
I'm an applications engineer for a sealing systems company and i would agree with Ron on the fact that 316 is used in marine applications but it is not ideal.
It is used because its relatively inexppensive for large applications like hulls, but for this it is usually coated.
In typical applications where i would want the anticorrosion properties to be good i would use ST.ST 420 or even higher, but it really depends on what you want to use it for.
Regards,
Sparky
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
Monel 400
Copper-Nickel alloy 706 or 715
AL6XN
254SMO
Regards,
Mike
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
The problem with 316L is stress corrosion cracking, that propagates through the granular structure of steel, causing pin hole leaks. For deck and hull fittings stainless is very strong and corrosion resistant. I would not recommend for piping material with seawater!!!!
RE: Does the Stainless Steel E316 resist seawater and Temp??
Hope this helps.
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
Mechanical properties do not vary significantly with temperature in the range you mention, but corrosion depends exponentially on environmental temperature.
RE: Does the Stainless Steel E316 resist seawater and Temp??
Please help.
RE: Does the Stainless Steel E316 resist seawater and Temp??
2.It is not a good idea to carry out forming operations at 500 deg. C as this would cause "sensitizing", which means onset of precipitation of chromium carbides at grain boundaries. This, in turn, impairs corrosion resistance of the Stainless Steel. Using "L" grade helps to a large extent by limimting carbon available for combining with chromium. If hot forming in this temp. range is unavoidable, please carry out solution annealing the formed part at 1050 deg. C followed by quenching in DM Water.
3.To distinguish 316 from 304, people use a simple "Moly test". This involves applying a chemical which changes colour if Molybdenum is present. This kit is called a "Moly Tester" and readily available in the market.
RE: Does the Stainless Steel E316 resist seawater and Temp??
Sandvik 254 SMO (= UNS 31254)
Also Sandvik SAF 2205 (= duplex 2205 = UNS31803) or Titanium is used, but SS316 or SS304 is normally never accepted.
Try the site www.steel.sandvik.com/
or www.avestasheffield.com/steel_grades.asp
They have specs for SMO254 and SAF2205
If it is for submerging into seawater, other rules apply.
The NORSOK standards homepage have a standard for material selection, which includes some considerations for both piping for seawater service and for subsea installations.
Try the material selection standard at
http://www.nts.no/norsok/m/m00102/m00102.htm
Also there's a site
www.corrosionsource.com/technicallibrary/corrdoctors/Modules/Seawater/Seawater.htm
which may have some info
Regards
Mogens
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
I think it is too late to answer. But there is a test kit which we generally use to check whether a steel is 304 or 316. (I presume these are the only two samples infront of you) The kit consists of a torch with graphite tip and an electrolyte. Put a drop of electrolyte on the steel, dip the graphite tip in the sloution and switch on the torch. If the steel consists of molybdinum the color of electrolyte turns to reddish pink.
Regards,
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
RE: Does the Stainless Steel E316 resist seawater and Temp??
"Materials Selection for High Reliability Seawater Systems"
Brian Todd, Consultant to Nickel Development Institute.
located at marine.copper.org/2-toc.html
mufasa
RE: Does the Stainless Steel E316 resist seawater and Temp??
As far as seawater is concerned 6% moly alloys like AL-6XN are excellent for resisting SCC, pitting, and crevice attack. 2205 is questionable in seawater although in higher velocity situations we have seen duplex 2205 used for things such as seawater pumps. In reality for seawater a superduplex like 2507 is much better suited to resist corrosion than a 2205.
RE: Does the Stainless Steel E316 resist seawater and Temp??
What types of welding processes can be applied to
weld piping elements?
Thanks,
RE: Does the Stainless Steel E316 resist seawater and Temp??
You'd distinguish them on the basis of Mo content
the following webpage details a kit which can do this
http://www.koslow.com/1542c.html
which references ASTM E 1476-95
probably not that simple, but if you can find a way to dissolve some of the sample up and then detect molybdenum using a chemical test, sounds like you'd be set.
RE: Does the Stainless Steel E316 resist seawater and Temp??
i have a similar problem with a heatexchangers we have to select another material for the tubes and we where thinking in a ss 316 L for use in a sea water but as see in this tread is not going to work can you send me a copy of the pages of the manual to my e-mail is heatexg@latinmail.com i apreciate all the help