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External pressure chart for unassigned material

External pressure chart for unassigned material

External pressure chart for unassigned material

(OP)
Hi

Have anyone experienced designing an ASME vessel with unassigned material against external pressure? I am wandering which external pressure chart shall be used for unassigned material, especially LDX 2101. Please suggest.

RE: External pressure chart for unassigned material

What makes you think you can design an ASME stamped vessel without using an ASME approved material?

jt

RE: External pressure chart for unassigned material

prasit,
LDX 2101 is standardised by ASTM/ASME. It is accepted as equivalent / exceeding the S32101. Refer to Outkumpu's website.
gr2vessels

RE: External pressure chart for unassigned material

(OP)
The vessel is not a stamped vessel. It is just design based on ASME Code. I know LDX 2101 is equivalent to S32101, however I can't find this material in the stress table. Thus, I have no idea which exteranl pressure chart shall be used for this material.

RE: External pressure chart for unassigned material

prasit,
I don't have at hand the code case 2418, that might help you, provided your Client agrees to it. Also, check out the post in the search box above, for this material and the code case 2418.
cheers,
gr2vessels

RE: External pressure chart for unassigned material

A new one, I've been advised that Code Case 2418 allows 198 MPa design stress at 100 deg C. Sory, that's it, can't get more..
gr2vessels

RE: External pressure chart for unassigned material

Use Figure HA-5 for external pressure per code case 2418.

RE: External pressure chart for unassigned material

(OP)
Hi all

Thanks for all useful responses. That's really help.

Prasit

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