[MW:35755] 347H material weldability

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, 

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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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