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structural steels for pressure vessels

structural steels for pressure vessels

(OP)
hi all
Do you know where i can find a definition for "structural steel" ?

Is the construction of pressure vessels with "structural steel" is covered by interpretation of the ASME BPVC code ?

thank you
regards

RE: structural steels for pressure vessels

According to EU codes, all steels starting with an "S" are structural steels (eg. S235; S355).
They should not be used for pressure vessels, you need "P" steels for this application (eg. P355).

Can't say for sure in ASME, however seen the large differences between Structural and Pressure steels (mainly in testing the mechanical properties), I doubt they are interchangeable in other countries...

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RE: structural steels for pressure vessels

Check out UCS-6. There are limitations on using structural steel.

RE: structural steels for pressure vessels

ASME Section VIII, Div 1 does permit the use of a structural steel (ASME SA 36) under certain restrictions. In general, the problem with structural steels is the variability in properties through thickness which makes them less prone for use in pressure retaining applications.

RE: structural steels for pressure vessels

(OP)
thx everyone !

RE: structural steels for pressure vessels

Structural and pressure vessel steels do not overlap very much, for reasons outlined above. A sensible PV designer would not specify A36 plate when ubiquitous A516-70 with far superior properties is available for the same price. A36 will find its way into structural supports and internals.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

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