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Re: [MW:32556] IMPACT TEST FAILLURE

By Materials & Welding
7018-1 is not for more than -45 deg celsius 

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,
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


On Fri, Oct 8, 2021 at 8:44 AM Ahmed Rashed <arashed@qituv.com> wrote:
Dears, 

I made PQR material A333 GR.6 (6" STD) welded by GTAW for Root pass (ER70S-6) and SMAW (E7018-1) for filling and cap according to ASME IX , B31.3.
Tensile test and bend test passed.
Impact test failed (for weld metal Av. 12 J) and for (HAZ Av. 8 J) at -55.6 degree celsius.

I don't know why the impact test failed !!!!! 

On Thu, Oct 7, 2021 at 2:34 PM 'Prakash Hegde' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Hi
In addition some time there is possiblity of improper.Heat treatment received to Forging and casting causing non uniformity of.req.grain structure for total cross section Causing failure in Impact test
Regards
Hegde


On Thu, 7 Oct 2021 at 15:02, J Prinsen
No it is not,

Something went wrong with the thermal cycle during welding, heat-input/interpass to high will break down the impact thoughness

Regards


Jurgen Prinsen IWE
Metallurgist and welding engineer


Van: "QA/QC" <adnanziad49@gmail.com>
Aan: "materials-welding" <materials-welding@googlegroups.com>
Verzonden: Donderdag 7 oktober 2021 10:16:23
Onderwerp: [MW:32549] IMPACT TEST FAILLURE

DEAR MASTER 
we have a test coupon 7.11 thichness with flange a106 with a105n 

during mechanical test the impact test for FLANGE FAILLURE IN HAZ  IN 3 POINT £

IS IT ACCEPTABLE 

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