RE: [MW:29236] 321H electrode.

A lot of information on the internet – see two examples below:

 

TWI Job Knowledge 104 –

 

"Austenitic stainless steels can be welded with all the commercially available welding processes. There are matching filler metals available for most of the austenitic range of alloys, the exceptions being that there is no type 304 filler metal available (this alloy is generally welded with type 308 filler metal) and no type 321 filler due to the problems of transferring titanium across the arc. Type 321 steels are usually welded with a type 347 filler."

 

Lincoln Electric – Stainless Steels Welding Guide

 

"Stabilized Grades (321, 347, 348) Stabilized grades contain small amounts of titanium (321), niobium (columbium) (347), or a combination of niobium and tantalum (347, 348). These elements have a stronger affinity for carbon then does chromium, so they combine with the carbon leaving the chromium to provide corrosion resistance. These grades are most often used in severe corrosive conditions when service temperatures reach the sensitizing range. They are welded with the niobium stabilized electrodes, AWS E347-XX. Type 321 electrodes are not generally made because titanium is lost in the arc. AWS E347-XX is usually quite satisfactory for joining type 321 base metal."

 

And

 

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Dinesh Somwanshi
Sent: Thursday, March 07, 2019 10:39 AM
To: materials-welding
Subject: [MW:29222] 321H electrode.

 

Dear sir.

Please advise electrode SMAW for welding 321H to 321H plate.

We were recommended E347-16 . Client denied.

Pls advise.

Regards
Dinesh

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