The use of SA-479 bar for pressure parts in ASME VIII Div.2 construction?
The use of SA-479 bar for pressure parts in ASME VIII Div.2 construction?
(OP)
Would SA-479 316 bar would be allowed for the manufacture of small pressure parts (typically 1" NPT couplings) to be used as shell penetrations, welded (set-through) into a new build pressure vessel of ASME VIII Div.2 construction?
I know this material is allowed for ASME VIII Div.1 construction as it is included in Table UHA-23 of Div.1. In terms of Div.2 construction, however, I could not find SA-479 material listed in Table 3-A.1.
Is the intent of para. 3.2.5.2 of Div.2 to permit SA-479 for this type of application?
I am sure this question must have been asked before, but when I searched here I could not find this question asked from the perspective of Div.2 construction.
I know this material is allowed for ASME VIII Div.1 construction as it is included in Table UHA-23 of Div.1. In terms of Div.2 construction, however, I could not find SA-479 material listed in Table 3-A.1.
Is the intent of para. 3.2.5.2 of Div.2 to permit SA-479 for this type of application?
I am sure this question must have been asked before, but when I searched here I could not find this question asked from the perspective of Div.2 construction.





RE: The use of SA-479 bar for pressure parts in ASME VIII Div.2 construction?
I agree with the interpretation of 3.2.5.3.
I don't feel that Table 3A applies because the scope of 4.16 is for flanged connections and NPT couplings are welded or threaded, and in this case I am assuming you are talking about a threaded connection. (likely for an instrument connection.) I'm not sure if my interpretation is correct.
RE: The use of SA-479 bar for pressure parts in ASME VIII Div.2 construction?
It is interesting that you say SA-479 316 is listed in Table 5A, because I can not find it listed there. In our 2015 Edition (Customary Units) of ASME II Part D the 316 grades (UNS31600) are listed in Table 5A on page 418, but Bar SA-479 is not listed?
RE: The use of SA-479 bar for pressure parts in ASME VIII Div.2 construction?