301 Stainless for use in ASME Pressure Vessel
301 Stainless for use in ASME Pressure Vessel
(OP)
Hoping one of you could help me out. I want to make a pressure vessel component out of stainless, and need to make sure it is ASME compliant. I was looking at the list of stainless steels covered by an SA or A spec in the ASME BPVC Section VIII, and it seems to exclude 301 (UNS#S301000, EN# X10CrNi18-8) (and 302 and 303 S.S for that matter). I mostly see specs for 304 and 316, which makes sense because they are more abundant.
My questions are:
1) Is there a spec for 301 that I can use? Am I overlooking it.
2) If there is no spec, then I seem to recall an ASME approval process for non-standard materials. Could you briefly describe the approval process?? Additionally, if someone has gone through the process, can you give me a sense of whether it would be worth the trouble?? I will probably give in, and just use an established spec, rather than go through a tedious approval process.
Any recommendations or alternative approaches are welcome.
Thanks everyone!
My questions are:
1) Is there a spec for 301 that I can use? Am I overlooking it.
2) If there is no spec, then I seem to recall an ASME approval process for non-standard materials. Could you briefly describe the approval process?? Additionally, if someone has gone through the process, can you give me a sense of whether it would be worth the trouble?? I will probably give in, and just use an established spec, rather than go through a tedious approval process.
Any recommendations or alternative approaches are welcome.
Thanks everyone!





RE: 301 Stainless for use in ASME Pressure Vessel
If you want to develop a submittal for a Code Case for use of this material, you need to follow the requirements for the respective Code book section for submittal of Code Cases. You can locate this information under a Mandatory Appendix titled SUBMITTAL OF TECHNICAL INQUIRIES TO THE BOILER AND PRESSURE VESSEL COMMITTEE — MANDATORY
All of the information is there for what you need to do for a Code Case.
Is it worth it? It all depends on your business needs because it will require time and data submittals to the committee. How do I know this - I sit on an ASME B&PV Code standards committee and see these all the time.