In addition for E347/ER347:
Consumables depositing titanium as a stabilizing element are not commercially available because titanium is not readily transferred across the arc in shielded metal arc welding. Tantalum and niobium are almost equally effective in stabilizing carbon and in providing high-temperature strength.
From: chander bhushan girotra [mailto:chandergirotra@gmail.com]
Sent: Monday, August 16, 2010 11:08 PM
To: mlkthakkar2@gmail.com
Cc: Bathula Raghuram (Mumbai - PIPING)
Subject: reply to your query
-----Original Message-----
From: materials-welding@googlegroups.com [
mailto:materials-welding@googlegroups.com] On Behalf Of MAULIKSent: Sunday, August 15, 2010 3:15 PM
To: Materials & Welding
Subject: [MW:6502] Welding of SS 304 for pressure vessel application
Dear all,
1. Why E 308 is used for welding of SS 304 instead of E 304?
2. Why E 307 is used for welding of SS 321 instead of E 321?
Of course E 321 & E 304 electrodes are not available in market.
Is there any metallurgical reason or any manufacturing difficulty?
Please give the answer with proper justification.
Regards,
Maulik H. Thakkar
Welding Engineer
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