Materials & Welding

We can use P5a.  Sent from Outlook for Android From:  materials-welding@googlegroups.com <materials-welding@googlegroups.com> on behalf of Aslam Khan <akchillu@gmail.com> Sent:  Tuesday, February 3, 2026 10:50:27 am To:  materials-welding@googlegroups.com <materials-welding@googlegroups.com> Subject:  [MW:35983] P5A to P8 I have scenario in site, we have to qualify welders for cs to ss,but we dont have ss material available ,can we do with cs alone using f43 filler wire. wps- p5a to p8- f.no-43 Wqt - p5a to p5a- f.no-43 Thanks&regards Aslam  -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups...

As per code you can use.  Convince your customer also before starting WQT. Thanks & Regards Manoj On Tue, 3 Feb 2026, 13:20 Aslam Khan, < akchillu@gmail.com > wrote: I have scenario in site, we have to qualify welders for cs to ss,but we dont have ss material available ,can we do with cs alone using f43 filler wire. wps- p5a to p8-  f.no-43 Wqt - p5a to p5a- f.no-43 Thanks&regards Aslam  -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAA7Erp%3DnRb20byLE0w2M14GDcFF3G1wkuy-5FzsTxyCpp7Q0Tw%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/gro...

1.  Tensile Test (ISO 4136 / ASTM E8) Purpose:      Determine yield strength, UTS, and elongation. Specimen:  Transverse or all-weld-metal, machined to standard dimensions. Procedure:   Mount the  two specimens in a calibrated tensile machine. Apply load at controlled strain rate until fracture.   Record YS, UTS, EL%. Acceptance:  Tensile ≥ minimum specified; fracture location acceptable.   2.  Bend Test (ISO 5173 / ASTM E190 / AWS B4.0 ) Purpose:       Check ductility and weld soundness. Specimen:     Face/root/side bend, edges smoothed. Procedure:   Bend to 180° around specified mandrel. Inspect tension surface. Acceptance:  No cracks > 3 mm; no open defects.   3. Vickers Hardness Test (ISO 6507 /  ASTM E92 / AWS A4.2 ) Purpose:        Evaluate hardness of WM, HAZ, BM. Specimen:     Polished transverse section; HV10 or HV5 load. Procedure:   Apply load for 10–15 s. Take impressions across the weld line.   Record hardness profile. Acceptance:  Project-specific (e.g., ≤ 250 HV10 for...

As per ASME Section IX, welder qualification for a dissimilar weld (P5A → P8) performed using F-No. 43 filler cannot be done on  P5A → P5A materials alone.  The test coupon must include at least one P8 base metal to represent the metallurgical condition of  the production weld.   Therefore   WQT must be performed on a CS + SS test coupon .   CS + CS coupon with F43 is not acceptable under ASME IX. Sridhar. On Tue, 3 Feb 2026 at 13:20, Aslam Khan < akchillu@gmail.com > wrote: I have scenario in site, we have to qualify welders for cs to ss,but we dont have ss material available ,can we do with cs alone using f43 filler wire. wps- p5a to p8-  f.no-43 Wqt - p5a to p5a- f.no-43 Thanks&regards Aslam  -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it...

As per ASME SEC IX QW-423 Which allows alternative materials for welder qualification and the welder will be qualified within the ranges of the essential variable, you can proceed with WQT on a P1 to P1 material with F43. On Tue, 3 Feb 2026, 11:50 am Aslam Khan, < akchillu@gmail.com > wrote: I have scenario in site, we have to qualify welders for cs to ss,but we dont have ss material available ,can we do with cs alone using f43 filler wire. wps- p5a to p8-  f.no-43 Wqt - p5a to p5a- f.no-43 Thanks&regards Aslam  -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAA7Erp%3DnRb20byLE0w2M14GDcFF3G1wk...

What about qw-423, it mention we can use alternative material for wqt,pls clear the doubt Thanks&regards Aslam khan Mob:+965 66744128 On Tue, 3 Feb 2026 at 2:46 PM sridhar cn < sridharcn305@gmail.com > wrote: As per ASME Section IX, welder qualification for a dissimilar weld (P5A → P8) performed using F-No. 43 filler cannot be done on  P5A → P5A materials alone.  The test coupon must include at least one P8 base metal to represent the metallurgical condition of  the production weld.   Therefore   WQT must be performed on a CS + SS test coupon .   CS + CS coupon with F43 is not acceptable under ASME IX. Sridhar. On Tue, 3 Feb 2026 at 13:20, Aslam Khan < akchillu@gmail.com > wrote: I have scenario in site, we have to qualify welders for cs to ss,but we dont have ss material available ,can we do with cs alone using f43 filler wire. wps- p5a to p8-  f.no-43 Wqt - p5a to p5a- f.no-43 Thanks&regards Aslam  -- https://materials-welding.blogspot.com/ https://www...

Qw-423 Allows alternative material for WQT. You can alter the base material mentioned in the WPS , alternative base material shall be chosen as per the table mentioned in QW-423. On Tue, 3 Feb 2026, 4:15 pm Aslam Khan, < akchillu@gmail.com > wrote: What about qw-423, it mention we can use alternative material for wqt,pls clear the doubt Thanks&regards Aslam khan Mob:+965 66744128 On Tue, 3 Feb 2026 at 2:46 PM sridhar cn < sridharcn305@gmail.com > wrote: As per ASME Section IX, welder qualification for a dissimilar weld (P5A → P8) performed using F-No. 43 filler cannot be done on  P5A → P5A materials alone.  The test coupon must include at least one P8 base metal to represent the metallurgical condition of  the production weld.   Therefore   WQT must be performed on a CS + SS test coupon .   CS + CS coupon with F43 is not acceptable under ASME IX. Sridhar. On Tue, 3 Feb 2026 at 13:20, Aslam Khan < akchillu@gmail.com > wrote: I have scenario in site, we have to qual...