WELDING PRECAUTIONS

[Ch Bilal jovinda]

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,,

[Vishwas Keskar]

Why ERNiCRMo3 is used for TYP 321

Sent from my iPhone

On 24 Jan 2025, at 10:28 PM, Ch Bilal jovinda <chbilal...@gmail.com> wrote:



--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAOq7hqvvAnhZe_2t48vM1SKc-p6i6g_1ENr%2BC7%2BOF6Z_rRAFZw%40mail.gmail.com.

[sridhar cn]

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.

--

[Raviraj Gohil]

You may apply appropriate Trailing gas

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYigX_WLiNeA5ncsCqnNkqcZ6ocoV5_t2a818J%3DpfwOYpSQ%40mail.gmail.com.

[Kannayeram Gnanapandithan]

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

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYigX_WLiNeA5ncsCqnNkqcZ6ocoV5_t2a818J%3DpfwOYpSQ%40mail.gmail.com.

[Kannayeram Gnanapandithan]

why do u want to use inconel 625, instead u can use 321 itself , since u r using TIG there will not be much issues with 321 filler wire. 

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

--

[sridhar cn]

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

Thank you.

Sridhar.

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePqJjuj5quqxnFtEwhpsFYp%3DUgzOrUX7j43FwUMHg_t2g%40mail.gmail.com.