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Re: [MW:35867] 347H material weldability

By Materials & Welding
Hi Zakaria,
Hope it is piping material and generally we use GTAW + SMAW welding processes to weld such stabilized grade material.

For SS347H material, the recommended welding consumables are AWS ER347 for Gas Tungsten Arc Welding (GTAW) and AWS E347 for Shielded Metal Arc Welding (SMAW).

Please check your customer's specifications for PWHT and other requirements. Being stabilized grade PWHT is recommended at 900 deg. cent. temperature for 4 hours.

Thanks,
Best Regards,
Rajnish 
On Tue, 12 Aug 2025 at 13:02, Zakaria ghrab
<zakaria.ghrab@gmail.com> wrote:

Hi experts,

I'm need information about 347H material weldability ( welding process, rod/electrode, temperature control, pwht, impact test?!, ....)
Could you help me with references please.


Thank you very much.





Thanks and Regards, 
-----
زكرياء غراب
GHRAB Zakaria 
Tunisia : +216 96 635 805
Bénin : +229 97 128 387


Yesterday is the past, tomorrow is the future; and today? Today is the present, the gift: Enjoy it!

Le lun. 11 août 2025, 07:53, Kannayeram Gnanapandithan <kgpandithan@gmail.com> a écrit :
  Interpretation #: BPV IX-18-34
 Record Number: 18-771
 Subject Description: SC IX; QW-401.1 and QW-403.6 - Thickness Range Qualified for Impact Testing Standard Designation: BPV Section IX Par/Fig/Table: QW-401.1 and QW-403.6 Edition/ Addenda: 2017 

Background:
 A welding procedure qualification was performed on a 40 mm thick test coupon in 1G position by GTAW (10 mm) and SMAW (30 mm). Tension and bend tests were performed on the 40 mm plate. 

A second welding procedure qualification was performed on a 6 mm plate in 3G position by GTAW and only impact testing was performed. A third welding procedure qualification was performed on a 6 mm plate in 3G position by SMAW and only impact testing was performed. All of the essential variables remained the same except for the coupon thickness. 
Question: 
May the PQRs listed above, support a WPS (GTAW+SMAW) for material requiring notch toughness with a qualified base material thickness range of 5 mm to 200 mm, GTAW weld metal thickness range 20 mm max. and SMAW weld metal thickness range up to 200 mm max.? 

Reply: Yes.   

 My queries .   Is it in order

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

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