stainless structural steel for vessels

[sksmechanical]

I have a vessel in cold service (SA-240 Gr316L) and am wondering what structural stainless steel is commonly used for supports?

 

[rneill]

SA276 Grade 316 or 316L ?

 

[vesselfab]

We generally use 304/304L for externals, even on 316 vessel

 

[sksmechanical]

would you use SA-276 or SA-240?

 

[rneill]

SA240 is a standard applicable to plate whereas SA276 is a standard applicable to bars and structural shapes.

You could use SA240 to order plate to fabricate structural members but if you wanted to order structural shapes (angle iron, channels, etc.) SA276 would be the appropriate standard.

 

[vesselfab]

if what we need is not available in structural shapes .... we will fabricate from plate sa-240

 

[sksmechanical]

Thanks gentlemen for the info.