ASTM material welded to ASME material
ASTM material welded to ASME material
(OP)
Please someone educate me a little bit:
Can ASTM non-pressure part, such as support clips, be directly welded to ASME pressure part for new vessel to get code stamp and NBR ?
For example A-36 welded to SA516-70. Section II states A-36 is identical to SA-36. Are there any special requirements in PQR ?
If that is not a problem, I believe PWHT will still follow vessel code for thickness above 1.5" thick, not 3/4" from piping code which uses ASTM material.
Can ASTM non-pressure part, such as support clips, be directly welded to ASME pressure part for new vessel to get code stamp and NBR ?
For example A-36 welded to SA516-70. Section II states A-36 is identical to SA-36. Are there any special requirements in PQR ?
If that is not a problem, I believe PWHT will still follow vessel code for thickness above 1.5" thick, not 3/4" from piping code which uses ASTM material.





RE: ASTM material welded to ASME material
PWHT follows construction code (Sec. VIII Div. 1) not material, regardless of what the material is usually used for.
RE: ASTM material welded to ASME material
In additon to provisions in david339933 reply, the external attachment that will affect the structural integrity of the vessel (like supports) has to assure the toughness requirement at the operating conditions of the vessel. You may refer to UCS 66 (a) of Div.1 or 3.11.1.1 of Div. 2.
You need to give attention to materials that falls under A/SA-6 (like A/SA-36 & A/SA-283) since those materials falls under Curve-A. And, if you are not exempted by other paragraphs or your client doesn't allow to use those exemptions, then most likely you wil face a problem in the MDMT.
Regards,
M.Salaheldin
Static Equipment Mechanical Design Engineer
RE: ASTM material welded to ASME material
Regards
r6155
RE: ASTM material welded to ASME material
Regards,
M.Salaheldin
Static Equipment Mechanical Design Engineer