Re: [MW:35408] WELDING PRECAUTIONS

You are correct Mr. Gnana Panditahn. Titanium was mentioned by oversight. 321H has Titanium of max. 0.70%

Thank you.

Sridhar.

On Mon, 27 Jan 2025 at 19:44, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

hope that 347 is stabilized with Niobium /columbium, pl correct if i am wrong

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015, ISO 3834, EN 15085, 

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Sat, Jan 25, 2025 at 4:31 PM sridhar cn <sridharcn305@gmail.com> wrote:

ER347 (a Titanium stabilised) filler metal that mitigates sensitization and suitable for we;ding 321H 

due to its similar composition and properties.

Minimise the heat input to reduce the time spent in the sensitization temp. range (427 to 871 deg.C).

Avoid preheating. Titanium  forms titanium carbides and preserves chromium levels and maintains

corrosion resistance  at high temperatures.

Sridhar.

On Fri, 24 Jan 2025 at 22:28, Ch Bilal jovinda <chbilaleng1989@gmail.com> wrote:

Dear Experts,

I seek your guidance on the following query:

When welding SS 312 TP 321H material using the GTAW process with ERNiCrMo-3 filler metal, what are the major safety precautions required to control the cooling rate to avoide sensitization?

Your valuable insights will be highly appreciated.

Best regards,,

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