Re: [MW:6667] What is the Filler metal to weld Base metal (SA516 Gr 60) to achieve weld metal tensile properties after Normalization+ Stress Relieving

Hi, I found the WPS&PQR from your Contractor have used SA516 Gr.&0(P.No.1,Gr.2) but your actual material in production is SA516 Gr.60(P.No.1,Gr.2). Change in Material Group No.is a Supplementary Essential Variable for SMAW and SAW Processes as per QW253 and QW254. Please find below the extarction from ASME Section -IX-QW403.5 for your reference.   QW-403.5 Welding procedure specifications shall be qualified using one of the following: (a) the same base metal (including type or grade) to be used in production welding (b) for ferrous materials, a base metal listed in the same P-Number Group Number in table QW/QB-422 as the base metal to be used in production welding (c) for nonferrous materials, a base metal listed with the same P-Number UNS Number in table QW/QB-422 as the base metal to be used in production welding For ferrous materials in table QW/QB-422, a procedure qualification shall be made for each P-Number Group Number combination of base metals, even though procedure qualification tests have been made for each of the two base metals welded to itself. If, however, two or more qualification records have the same essential and supplementary essential variables, except that the base metals are assigned to different Group Numbers within the same P-Number, then the combination of base metals is also qualified. In addition, when base metals of two different P-Number Group Number combinations are qualified using a single test coupon, that coupon qualifies the welding of those two P-Number Group Numbers to themselves as well as to each other using the variables qualified. This variable does not apply when impact testing of the heat-affected zone is not required by other Sections. So,If impact testing is required in your case,your contractor shall do supporting PQR with the actual production material (SA516 Gr.60) otherwise the exising WPS and PQR of your contarctor is acceptable.   Thanks & Regards,   (karthik) Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282 --- On Tue, 8/24/10, Aly <mhaskar.aly@gmail.com> wrote: From: Aly <mhaskar.aly@gmail.com> Subject: [MW:6663] What is the Filler metal to weld Base metal (SA516 Gr 60) to achieve weld metal tensile properties after Normalization+ Stress Relieving To: materials-welding@googlegroups.com Date: Tuesday, August 24, 2010, 1:51 AM Dear All, We are getting Heads for pressure vessels from Supplier in Saudi, The head requirements are as follows:   Head: 28mm thk; SA516 Gr 60, NACE MR 0175 & HIC tested NACE TM 0284 Construction Code ASME SEC VIII Div 1, E2007 Ad2009. Type of Head Ellipsoidal with chordal seam (U stamped) Service For Pressure vessel in Sour Service HT: Normalization at 910deg C for  after forming & SR at 610 deg C along with vessel. Chemistry restriction by Client: C= 0.06% Si=0.24%, S= 0.007 & P=0.015, Hardness 200BHN Simulation Testing for HT (NR+SR) on test plate required.     Now the supplier has submitted me WPS / PQR for welding chordal seam of head for my review, the details of PQR as follows: Base metal SA516 Gr70; 90mmthk SMAW with E9018-G; SFA 5.5; A=10; F no. 4 SAW with F9P6 EG F3; SFA 5.23; A=10; F no. 6 HT= NR+SR   The weld metal composition achieved on PQR for SAW process are C=0.06%, Mn=1.37%, Si=0.24%, S% <0.005, P=0.014%, Mo=0.48%, Ni=0.82%, Cu=0.13%.   Tensile& bend test meeting requirements of Base metal.   My Question is whether the proposed filler metal is acceptable to this base metal (SA516 Gr 60) as per ASME SEC IX as weld metal chemical properties are not meeting the base metal requirements.   Thanks for co operation in this regard   Aly Kuwait   -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.