Ideal stainless for Section VIII, Div 2

[OnG_Engr]

Engineering Tips Community,

I have an application for a Section VIII, Division 2 vessel using stainless. My background Div2 is carbon steel and I know that some of these are better than others for Division 2. What high-yield stainless steels are readily available for Div 2?

 

[EdStainless]

What is the criteria? strength? creep? temp rating? corrosion resistance? price?
There is a long list.

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P.E. Metallurgy, consulting work welcomed

 

[OnG_Engr]

Application will be a food environment such as one would use a 316 or 304 steel in. Design temp is 300 F. No creep.

Must be compatible with 304/316. I'm looking for both a forging and plate application (SA-182 & SA-240?). It must be readily available due to small quantities and reasonable delivery. Pricing must be reasonable for stainless.

 

Why is high YS a criterion? The 300 series are not particularly good at that. Duplex SS (e.g. 2205) has excellent strength, is compatible metallurgically (i.e., welding), and offers enhanced corrosion resistance.

Pricing must be reasonable for stainless.

That is a thing of the distant past. And it became worse after Covid; now the entire economy essentially operates on a black market basis.


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

 

[GD2]

Read Part 3.2 and Annex 3A in ASME Sec VIII Div 2 that give the rules for permitted materials and allowable stress values to be used under this division. you will find a list of different grades of SS.
ASME Codes are not a design handbook. Material selection is Owner responsibility, which is usually done by an EPC with Owners approval.

GDD
Canada