Please note the following, often when you order materials according to
EN 10025 in the quality S355J2G3 the certificate also mentioned the
ASTM reference for this material, in this case ASTM A516 Grade 70. So
take a look at the original material certificate and see if this ASTM
material is mentioned as well, if so than the material is no longer an
unassigned material and problem is solved. If mentioned on the
certificate you should ask Lloyd's Register to mention both materials
on their PQR to avoid future discussions with clients and / or local
inspectors. When A516 is mentioned on the certificate you may also ask
Lloyd's Register to use the results you already gained to draw up a
PQR according to ASM section IX, this because all the tests required
for ASME IX are already executed for the original qualification. Only
thing that should be checked is the dimensions of the tensile test
specimens if those met the requiremens of ASME, if not you could test
some additional specimens if spare material is left. If not you should
weld a test plate with similar parameter as original test weld to
perform only the tensile test on it.
Best Regards,
Herman Pieper
On 22 feb, 02:34, "pgoswami" <pgosw...@quickclic.net> wrote:
> Dear All,
>
> The query posted by Gopu Nair, has generated some interesting discussions.
> If you analyze the scenario there are 2 issues, PQR was qualified on
> EN10025 S355J2G3, steel , which does not have any assigned P No or S-No,
> and qualification code is Lloyds Register Rule for ship building (Not ASME
> Sec-IX)
>
> Over the years ASME has included quite a few non ASTM/ASME steels and
> assigned P Nos (Ref ASME Sec-IX-, page 108/109). As above steel is NOT
> included in ASME Sec-IX, it is considered as steel with unassigned P No.
>
> As per QW-424, unassigned steel can be welded to unassigned steel, provided
> PQR is qualified as per ASME Sec-IX. Under the present context a s per the
> strict interpretation of ASME Sec-IX this PQR (since it is qualified to LRS
> rules) could not be referred for an ASME WPS. If it is recorded in the
> PQR, that testing was performed to LRS rules and ASME Sec-IX (cosmetic
> change) , it may be very well referred for preparing WPS to ASME Sec-IX
> on unassigned steel of similar mechanical properties to EN10025 S355J2G3.
>
> It would be good to get others' viewpoints also.
>
> Thanks.
>
> Pradip Goswami,P.Eng
>
> Senior Engineer/Specialist(Welding-Metallurgy)
>
> Engineering & Training Services Division
>
> ONTARIO POWER GENERATION Inc.
>
> PO Box-2000, RR-55(South)
>
> Nanticoke, Ontario,N0A1L0
>
> Tel:-(519) 587-2201, Ext 3107--in Nanticoke
>
> (416) 231-4111 , Ext 5925--in Kipling,Toronto
>
> Fax: (519) 587-6814
>
> <mailto:Email-pradip.gosw...@opg.com> Email-pradip.gosw...@opg.com.
>
>
>
> -----Original Message-----
> From: pgosw...@sympatico.ca [mailto:pgosw...@sympatico.ca]
> Sent: Thursday, January 21, 2010 2:08 PM
> To: GOSWAMI Pradip -THERMAL
> Subject: FW: [MW:4122] Preparation of WPS
>
> _____
>
> From: bharatg...@hotmail.com
> To: materials-welding@googlegroups.com
> Subject: RE: [MW:4122] Preparation of WPS
> Date: Thu, 21 Jan 2010 15:59:12 +0530
>
> WPS & PQR can be prepared as per ASME IX provided all essential variables
> for process GTAW & SMAW are meeting Section IX article 3 requirements.
> Since this metal is not appearing in QW 422 so such unassigned metal shall
> be identified in WPS/ PQR by specification ,type , grade or by chemical &
> mechanical properties as per QW 424
> Regards
>
> Bharat B. Gole
>
> _____
>
> Date: Thu, 21 Jan 2010 12:22:08 +0530
> From: gopunair5...@yahoo.com
> Subject: [MW:4117] Preparation of WPS
> To: materials-welding@googlegroups.com
>
> Dear All
>
> Recently I have qualified a WPS on 20mm thick plate of EN10025 S355J2G3
> using GTAW for root pass and SMAW for subsequent passes in accordance with
> Lloyds Register Rule for ship building. The test piece has undergone
> Transverse tensile test (2), Side bends (4) Impact test (3 Sets) at centre
> of the weld, fusion line and HAZ at -20deg.C, Macro and Hardness (1). PT and
> RT were carried out the test samples prior to drawing the destructive test
> samples. all the tests are passed with the required values. Record of
> welding for each run is prepared and maintained.
>
> consumable used are ER70-S2 and E-7018-1
>
> Plate material properties are: Yield 357 N/MM2, UTS 541 N/MM2, El; 30%
> IMPACT at -20deg C; 53min, 81 Av.
>
> C;0.18, Si: 0.35 Mn ;1.4, P ;0.015, S : 0.002 Ce; 0.428
>
> PQR as per the Lloyds rules is under preparation.
>
> My question is whether I can prepare a WPS and PQR in accordance with ASME
> Sec. IX using the above records.
>
> Regards
>
> Gopu/CEPL
>
> _____
>
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