Why alloy 925 material not available in ASME SEC II PART A&B....:
Why alloy 925 material not available in ASME SEC II PART A&B....:
(OP)
Hi...
i am designing a vessel with having fasteners material of Alloy 925(UNS N09925). It is a U-stamped vessel. I could not able to trace the material in ASME Sec II materials for design purpose. Can you please share the history about the material and where it is available.
Please advise me.
Thanks in advance,
Ramesh Kumar
i am designing a vessel with having fasteners material of Alloy 925(UNS N09925). It is a U-stamped vessel. I could not able to trace the material in ASME Sec II materials for design purpose. Can you please share the history about the material and where it is available.
Please advise me.
Thanks in advance,
Ramesh Kumar





RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
http://www.specialmetalswiggin.co.uk/products/inco...
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
Can we use alloy 925 material, even If it is not covered with in ASME?. Because, clearly bolt material was mentioned in client data sheet and also it is a U stamp vessel. in this case can i proceed with the same material or else i have to fallow any code rules?.
Is there any reason behind it, why the ASME not consider alloy 925 material?
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
Perhaps the cited Code Case will solve your problem.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
However, as metengr pointed out, no one has asked the BPV Committee to add such a material. If I were you, I would ask. Start by requesting a Code Case for the material, and then follow up by requesting that the material be added permanently.
That's how this whole ASME Codes and Standards work. There's not some all-knowing all-powerful group of super-engineers (although we like to believe that we are, the truth is that we're just a bunch of regular engineers with a passion). It works as a collaborative community - engineers need something, so they ask for it. Engineers see something wrong, or have better/newer information, they come forward and collaborate on a better way. You can think of the Codes and Standards community as the original social network that started over 100 years ago - everything is crowd-sourced with volunteers.
Now, go do your part and contribute.
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
Are the bolting materials listed on the data report as part of vessel design? See UG-12 in ASME Section VIII, Div 1. If so, alloy 925 material cannot be used because there are no allowable stresses to use for design.
If the bolting materials are not part of vessel design, you can use material at your own risk.
Again, alloy 925 is not listed as pressure retaining material because it has not been asked for use by a pressure vessel engineering organization or owner/user. If you feel there is a need, you can request a code case from ASME Section VIII, Div 1 committee.
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
It was part of previous code cases, see e.g. http://files.asme.org/catalog/codes/printbook/1388...
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
i will proceed with your reply accordingly.
Once again thank you so much.
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
SB-425 (N08825) seems to have a nearly identical nominal composition. Explain the situation and let 'em accept / reject it.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Why alloy 925 material not available in ASME SEC II PART A&B....:
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P.E. Metallurgy, Plymouth Tube