B31.1 B31.3 material ASTM (A) or ASME (SA)

[JAYDEE23]

I am trying to understand why B31.1 and B31.3 list the material prefix A (ASTM) and not SA (ASME) in thier stress tables. Can someone enlighten me on this a bit please?

 

[stanweld]

B31.1 "nonboiler external" and B 31.3 are not part of the ASME Boiler and Pressure Vessel Code; thus, the SA materials requirements are not applicable.

 

[JAYDEE23]

Is SA acceptable? Should i be specifying ASTM ONLY on B31.1 B31.3 NBEP work. While specifying SA for BEP (PP stamped)

 

[stanweld]

SA is acceptable but you may be restricting yourself with regard to materials selection and economies of purchase.

 

[JAYDEE23]

First..thank you for your time...Second ...I know its logical that SA is acceptable but can you tell me why or where this is stated.

 

[stanweld]

For B31.1, review 102.3.1 (C) and 123.1.1 (D).

 

[JAYDEE23]

Excellent..My utmost appreciation for the guidance sir!