Welding AL6XN & Super Duplex (Filler wire)

[Bret Lee]

Hello Everybody:
Appreciate if anybody could help me here as I am not too proficient in welding.

(1) I have a AL6XN (P45) material to Suplex Duplex (P10H), Will it be a good to weld using filler wire Er NiCrMo-3.

(2) I have a procedure to weld P45 to P45 & my qualification range is P1 thru P11, P34 & P4X. Am I good to weld P45 to P10H

Thank you
Bret

 

[EdStainless]

There are two issues to resolve, the properties of the welds (should they be duplex or austenitic) and then what level of corrosion resistance do you need (I presume at least matching the two base alloys).
Some reading for you:

https://link.springer.com/article/10.1007/s40194-016-0408-7

same paper, diff ref

https://www.researchgate.net/public...-duplex_and_super-austenitic_stainless_steels

https://www.imoa.info/download_files/stainless-steel/IMOA_Shop_Sheet_104.pdf

and there are more out there.
The use of alloy 59 (NiCrMo-13) filler should work very well for this.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[XL83NL]

You may find some leads in API RP 582 (e.g. table A.3) and API TR 938-C (e.g. para 7.3). Especially the latter has some important details.

 

[metengr]

(1) I have a AL6XN (P45) material to Suplex Duplex (P10H), Will it be a good to weld using filler wire Er NiCrMo-3.

I would consider ERNiCr-3.

(2) I have a procedure to weld P45 to P45 & my qualification range is P1 thru P11, P34 & P4X. Am I good to weld P45 to P10H

If you are using ASME Section IX, you will need a WPS for welding P-No 45 to P10H using the appropriate filler metal.

 

[weldstan]

I have used NiCrMo-3 for this weld in the past.

 

(2) I have a procedure to weld P45 to P45 & my qualification range is P1 thru P11, P34 & P4X. Am I good to weld P45 to P10H

No. You are mixing up welder performance variables with procedure qualification variables.
.
I'm curious, where would I see AL6XN (P45) welded to Super Duplex (P10H)? Offshore?

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."