structural steels for pressure vessels

• Nov 22, 2017

• #2

kingnero

Mechanical

Aug 15, 2009

1,783

BE

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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• Nov 22, 2017

• #3

david339933

Industrial

Jun 15, 2011

1,204

CA

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

 

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• Nov 22, 2017

• #4

metengr

Materials

Oct 2, 2003

15,478

US

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.

 

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• Dec 20, 2017

• Thread starter
• #5

Chumpes

Petroleum

Feb 23, 2016

208

FR

thx everyone !

 

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• Dec 20, 2017

• #6

Guest

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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