SA vs A for pressure vessel construction
SA vs A for pressure vessel construction
(OP)
Are the base materials used in pressure vessels constructed to ASME Sec VIII require a "SA"-prefix or is an "A" allowed. This is for carbon and stainless. Thanks for any help,





RE: SA vs A for pressure vessel construction
Regards,
EJL
RE: SA vs A for pressure vessel construction
Joe Tank
RE: SA vs A for pressure vessel construction
Materials for Code use should preferably be ordered, produced, and documented on this basis; however, material produced under an ASTM Specification listed in Table ED-1 may be used in lieu of the corresponding ASME Specification as listed in this guideline. Material produced to an ASME or ASTM Specification with requirements different from the requirements of the corresponding Specification may also be used in accordance with the above, provided the material manufacturer or vessel manufacturer certifies with evidence acceptable to the Authorized Inspector that the corresponding Specification requirements have been met.
You'll have to look up each material in particular. As an example, a typical CS, SA516 is on page lii. The material is identical to A516. The reference to Footnote B in Table 1 shall apply to the -04, -05, and -05e editions.
jt
RE: SA vs A for pressure vessel construction
If there is no corresponding SA spec, you need to certify the material per UG-10.
There is code interpretation on this issue, VIII-1-92-149.