Duplex SS 2205 for pressure vessels

[PeterWay]

Hy everybody, I'm working on the design of a heat exchanger and the client asked tubes of Duplex Stainless Steel 2205.
I couldn't find that material on ASME Section II - D, I could only find Duplex SS 2750.
Could the SS 2205 tubes be used for a pressure vessel calculated with ASME or should some other requs be fulfilled.
Please if anyone could give me some requirements or suggestions they'll be welcomed.
Thanks in advance!
Peter

 

[ASMEQC]

yes they can be used. we use them all the time. they are in section II part D.
depends on the SA# probably SA789 or SA790 its alot easy to look up by P# 10H. Hope this helps.

 

[PeterWay]

Thanks ASMEQC, but the only material that I find with SA789 adn SA790 is S32750 (SS 2750) but I couldn't find the S32205 (SS 2205).
What do you mean with look up by P#?

 

[fegenbush]

Peter,

Please check Code Case 2488-2 regarding the use of these materials. It provedes the necessary information for your design.

 

[XL83NL]

I believe UNS S31803 (almost equal to 2205 DSS, and comes usualy dual certified) is in ASME II-D, but 2250 DSS (UNS S32205) isnt.
Maybe the Code Case fegenbush referred to allows it. Can you detail where in II-D 2205 can be found ASMEQC?

 

[ASMEQC]

Peterway & XL83NL,

Guys I opened my mouth to soon. LOL
The tubes that we use are SA789-2205 (UNS #S31803) i do apologize for the confusion. I looked all through SEC. II part D and i did not find any tube or pipe the is UNS # S32205. Or any material that has that UNS #

Peterway do you have the tube on hand if so what does the MTR say they are.
I have a MTR from our last job and it is duel certified.

 

[heatexguy]

FYI, S32205 is not listed in Table UHA-23, therefore cannot be used in Sect VIII Div. 1 construction. S31803 is OK, and I would assume dual grade is OK, however, I would recertify it as straight S31803 per UG-10(a)to keep the AI happy....

 

[pradipgoswami]

Hi PeterWay,

Here's the link for acceptance of S32205, in SecVIII, DIV-1 code.The code case is 2637.

Thanks

Pradip Goswami,

http://cstools.asme.org/csconnect/CodeCaseForm.cfm?Action=View&CaseNumber=1943&NoToolbar=yes

View Code Case Form
Code Case# Case Type Sections Affected Motion
2637 BPVCC VIII-1
Adoption
Code Case Name
UNS S32205 Plates, Bars, Seamless and Welded Pipe and Tube, Forgings and Fittings
Supplement # Edition Year Approval Date (MM/DD/YY) ACI Date (MM/DD/YY) Date Annulled (MM/DD/YY)
0 2010 12/14/09
Boiler Code Meeting Date Associated
Record #'s Processing
11/06/09 04-468
Annul 6 months after incorporation
Year incorporated: 0
Terminate immediately, annulment processed.
Last Updated By
DuviellaR Last Updated Date
05/25/2012




Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299