The Electrode has been added with minor alloying elements to achieve
the strength after NT + SR.
As per ASME Sec.IX it is acceptable. Since you have used G
classification in PQR, the WPS shall be written the brand name of G
classification & only that brand of consumables to be used.
AA
On Aug 23, 11:51 pm, "Aly" <mhaskar....@gmail.com> wrote:
> 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
>
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