Welding of AISI 321 Bellow 1

[pipeneer]

Hi to All
I am in the process of changing a metall bellow in AISI 321 material by means of welding it in two places (cut in three pieces due to difficulty installing it in one circular piece, dia.1450 mm)and in place, my question is what would be the best Electrode(material)for this type of Stainless steel welding, I'm thinking of using GTAW(TIG)mehtode.Any suggestions WBGA.

 

[metengr]

Yes, I would suggest using the GTAW process with ER347 as the filler metal.

 

[stanweld]

With the GTAW process, you could also use ER321; Ti will not be lost through the arc.

 

[strider6]

Have a look at these docs. in the first at pag 14 there is a table with sugested filler metals. As stanweld said you can use 321 for Gtaw and 347 for covered electrode.

http://www.stainless-steel-world.net/pdf/11007.pdf

http://www.azom.com/details.asp?ArticleID=967#_Welding

http://www.corrosionist.com/Materials_Stainless_Steel_Welding.htm

S

Corrosion Prevention & Corrosion Control