Materials & Welding

Based on your advises, If i have a WPS with 6mm thickness in P.No 08, it allows to weld any thickness (from 1.5mm onwards) of P.No 8 materials Even in Dissimilar base material thickness Joints too. is my understanding is right? On Monday, December 15, 2025 at 4:08:04 PM UTC+5:30 venkateswara reddy Desireddy wrote: As per Sec IX QW 202.4 (b) (2) Dissimilar base metal  PQR base metal thickness minimum 38mm required to get unlimited thickness. 69.8 mm here max range WPS 5mm to 76mm required. On Mon, 15 Dec 2025, 10:51 am kavin murugam, < kavin....@gmail.com > wrote: Dear DV Reddy, T = base metal thickness t = weld metal thickness Did you WPS covers both thicknesses ? Thank you & Stay Safe!   KAVIN MURUGAM +60126159644 On Mon, Dec 15, 2025 at 3:44 PM venkateswara reddy Desireddy < dvre...@gmail.com > wrote: Dear friend, Nozzle thickness 20.4mm, so your WPS thicknes must be cover 20.4mm. 20mm thick WPS not suitable to use, because 0.4 mm less thick . Heat treatment is essent...

Yes you can weld any dissimilar thickness on p no. 8 of you have 6mm qualified PQR. Lower limit has to cover upper limit is sufficient even if you have a 6mm qualified PQR.  On Mon, 15 Dec 2025, 3:36 pm Shivasankar A, < shivasankar2593@gmail.com > wrote: Based on your advises, If i have a WPS with 6mm thickness in P.No 08, it allows to weld any thickness (from 1.5mm onwards) of P.No 8 materials Even in Dissimilar base material thickness Joints too. is my understanding is right? On Monday, December 15, 2025 at 4:08:04 PM UTC+5:30 venkateswara reddy Desireddy wrote: As per Sec IX QW 202.4 (b) (2) Dissimilar base metal  PQR base metal thickness minimum 38mm required to get unlimited thickness. 69.8 mm here max range WPS 5mm to 76mm required. On Mon, 15 Dec 2025, 10:51 am kavin murugam, < kavin....@gmail.com > wrote: Dear DV Reddy, T = base metal thickness t = weld metal thickness Did you WPS covers both thicknesses ? Thank you & Stay Safe!   KAVIN MURUGAM +60126159644 On M...

Can we use Duplex WPS for Super Duplex, kindly quote with the help of code Thanks -- 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/ee5dcbf4-b6cb-4421-8338-04e109d45b15n%40googlegroups.com .

Sir,  Not using .because filler,interpass temp.,etc are not same.DSS.  DSS. ER2209  SDSS ER2594    Thanks and regards,      S.KARUNAKARAN,         karunaqc@gmail.com       91-6382279754        On Mon, 15 Dec 2025, 16:29 Alex Kumar Antony, < alexkantony@gmail.com > wrote: Can we use Duplex WPS for Super Duplex, kindly quote with the help of code Thanks -- 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/ee5dcbf4-b6cb-4421-8338-04e109d45b15n%40googlegroups.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you ar...

As per ASME Section IX, the use of SDSS filler wire is permitted even when impact testing is not specified or required, provided the essential variables are met. However, beyond the code requirements, from a metallurgical and performance standpoint, DSS and SDSS differ significantly in their ferrite-austenite phase balance requirements. Achieving the correct phase balance is critical and is strongly influenced by welding heat input. SDSS, in particular, has a higher PREN (Pitting Resistance Equivalent Number) requirement compared to DSS. To achieve the required PREN and phase balance in SDSS weld metal, nitrogen is commonly added to the shielding and backing gas. Nitrogen is a strong austenite stabilizer and also contributes to an increase in PREN, thereby improving corrosion resistance. If a WPS is qualified for DSS using pure argon as the shielding gas, and it is later proposed to use an argon–nitrogen mixture (for Eg: Ar + 2% N₂) for SDSS welding, this change would require requalifi...

As per ASME Section IX – QW-403.5: No, a change from one Group Number to another Group Number within the same P-Number shall be considered an essential variable and requires requalification of the WPS. On Mon, 15 Dec 2025, 16:29 Alex Kumar Antony, < alexkantony@gmail.com > wrote: Can we use Duplex WPS for Super Duplex, kindly quote with the help of code Thanks -- 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/ee5dcbf4-b6cb-4421-8338-04e109d45b15n%40googlegroups.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message becau...