Weld Overlay / Stress Relieving
Weld Overlay / Stress Relieving
(OP)
Hi Gents,
We have AISI 4130 Flange welded with a pipe (P1 group material 25 mm WT) and stress relieved. Is it acceptable to clad internally with Inconel 625 by weld overlay on stress relieved spool? Can any one please advise on the WPS / PQR requirement?
Thanks!
We have AISI 4130 Flange welded with a pipe (P1 group material 25 mm WT) and stress relieved. Is it acceptable to clad internally with Inconel 625 by weld overlay on stress relieved spool? Can any one please advise on the WPS / PQR requirement?
Thanks!





RE: Weld Overlay / Stress Relieving
You need to answer the questions below before a reasonable recommendation can be made.
What is the service application of the above item?
What is the applicable construction code for this item?
RE: Weld Overlay / Stress Relieving
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Plymouth Tube
RE: Weld Overlay / Stress Relieving
RE: Weld Overlay / Stress Relieving
Per ASME IX you will need two overlay PQRs, one for the 4140 and one for the P1 material. You will also need at least one butt welding PQR.
RE: Weld Overlay / Stress Relieving
Hi Metengr:
The Service Application: Sweet and wet Sour Gas service
Design Code: B31.8
Hi EDStainless:
We will get the flange (API 10M) weld with A694 transition piece (both carbon steel) and stress relieved from one vendor. Then it shall be cladded interanlly (inconel) by another vendor. Can it be cladded after stress relieving?
Hi Stanweld, Thanks. please see above the requirement and give your opinion.
RE: Weld Overlay / Stress Relieving
RE: Weld Overlay / Stress Relieving
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Weld Overlay / Stress Relieving
Thanks for your response. Yes, the hardness shall not exceed 250 HV.
RE: Weld Overlay / Stress Relieving
See the attached link for information about PWHT.
Petrotrim Services
www.petrotrim.com