Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
(OP)
In ASME Section II, Part C, Appendix A, A7.10, the description of E309 filler metal there is a cautionary note that states: Embrittlement or cracking can occur if these dissimlar steel welds are subjected to a post weld heat treatment or to service above 700C.
I believe this had to do with cracking of weld many years ago. I have searched extensively on the net with no satisfaction. Does anyone have a good explanation for the note and/or can point me to sites or articles I can read?
I know manufacturers like Kobe have and are currently remixing the fluxes to help prevent this.
Thanks for the help.
I believe this had to do with cracking of weld many years ago. I have searched extensively on the net with no satisfaction. Does anyone have a good explanation for the note and/or can point me to sites or articles I can read?
I know manufacturers like Kobe have and are currently remixing the fluxes to help prevent this.
Thanks for the help.





RE: Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
http://www.weldinguide.com/gdanastasiadis/viewtopi...
RE: Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
http://www.bssa.org.uk/topics.php?article=101
RE: Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
RE: Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
This cautionary note is indeed very relevant for dissimilar metal welds operating at or above 800 deg F, because carbon migration is happening resulting in creep failures. I do not allow 309 filler metal for DMW's operating at or above 800 deg F by design. For service temperatures at or below 800 deg F, no problem with using 309 even with a PWHT.
RE: Source of Cautionary Note in ASME Section II, Part C for E309 Filler Metal
http://www.osti.gov/bridge/product.biblio.jsp?osti...