Welding AISI 405
Welding AISI 405
(OP)
I found the welding history of a vessel (SA 387 Gr.12 Cl.2) with clad material (AISI 405).
This document shows welding electrode as follows :-
- AWS A5.4 E309 for root pass
- AWS A5.4 E308 for finish pass
In my understanding AWS A5.4 E430 is suitable for welding AISI 405. Should we use E430 instead of E308 during repair? Please comment.
This document shows welding electrode as follows :-
- AWS A5.4 E309 for root pass
- AWS A5.4 E308 for finish pass
In my understanding AWS A5.4 E430 is suitable for welding AISI 405. Should we use E430 instead of E308 during repair? Please comment.





RE: Welding AISI 405
RE: Welding AISI 405
RE: Welding AISI 405
Instead of annealing temperature, can we carry out PWHT at lower temperature to improve corrosion resistance?
RE: Welding AISI 405
RE: Welding AISI 405
The NBIC references the original code of construction requirements, where possible. In this case because of the nature of repairs, you would require PWHT per UCS-56 in Section VIII if you touch the 1 Cr-1/2 Mo base material. As an alternative, I would refer you to the 2004 Edition of the NBIC, RD-1100, which allows local PWHT - we had approved this alternative PWHT method in 2003.
As an option to the above E309/308 filler metals, I would also consider an Inconel filler metal like Inco 182 or 82 for weld repairs between the ferritic stainless cladding and 1 Cr-1/2 Mo base plate. I believe the Ni-base filler metals would reduce susceptibility to harmful carbide migration along the weld fusion zone during local PWHT and potential cracking in service.
RE: Welding AISI 405
The Owner/User of the vessel to be repaired should be consulted with regard to selection of the repair filler metals.