Materials & Welding

Just for clarification Can any one share, WPS, for ss410 to SS316, On Mon, 2 Mar, 2026, 12:39 pm Sajeersayed Ali, < sajeersayed@gmail.com > wrote: 5.2.2 Combination of WPSs. A combination of qualified and prequalified WPSs may be used without qualification of the combination, provided the limitation of essential variables applicable to each process is observed. On Mon, Mar 2, 2026 at 12:26 PM praba karan < prabakaran776@gmail.com > wrote: Dear experts, For procedure qualification as per ASME SEC IX- "Multiple PQRs may support one WPS", Likewise can we follow the same practice in AWS also?  Because which is not mentioned directly on the code that we can use multiple PQRs to support one WPS.(And I'm not using prequalified WPS) Thanks & regards Prabaharan -- 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...

Giving b elow are the hints for  WPS ( both ISO / AWS)  for joining SS 410 ( martensite ) to SS 316 (austenitic) .  This should be  supported by a PQR qualification .   WPS : Dissimilar Joint: SS 410 vs. SS 316   1. General Information : Process : GTAW (Root) + SMAW / GMAW (Fill & Cap) ; Type : Dissimilar stainless steel welding 2. Base Materials : SS 410 (UNS S41000) – 410 Martensi te  SS  to  SS 316 – Austenitic SS ; ASME sec. IX P no 6 (410) to Pno 8 (316) 3. Joint Details : Joint Type : Butt joint ;   Thickness Range (Qualified) : xx  mm – xx  mm (based on the PQR) Root Gap : 2–3 mm ; Bevel Angle : 60° included ; Backing : Optional (SS backing or GTAW root)   4.  Filler Metal : Primary Choice :   ER309L / E309L  ( for  welding) ;   Alternative ( for c ritical service) :   ERNiCr-3 (Inconel 82) GTAW: ER 309L / ER NiCr-3; SMAW: E 309L / ENiCrFe-3; GMAW: ER309L ( 309L acts as a buffer to handle dilution &  prevent cracking ; Ni- b ase reduces risk of martensite cracking ) 5. W...

Dear experts, For procedure qualification as per ASME SEC IX- "Multiple PQRs may support one WPS", Likewise can we follow the same practice in AWS also?  Because which is not mentioned directly on the code that we can use multiple PQRs to support one WPS.(And I'm not using prequalified WPS) Thanks & regards Prabaharan -- 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/f0bb15a1-0ff5-4d62-b662-1b365472aadbn%40googlegroups.com .

5.2.2 Combination of WPSs. A combination of qualified and prequalified WPSs may be used without qualification of the combination, provided the limitation of essential variables applicable to each process is observed. On Mon, Mar 2, 2026 at 12:26 PM praba karan < prabakaran776@gmail.com > wrote: Dear experts, For procedure qualification as per ASME SEC IX- "Multiple PQRs may support one WPS", Likewise can we follow the same practice in AWS also?  Because which is not mentioned directly on the code that we can use multiple PQRs to support one WPS.(And I'm not using prequalified WPS) Thanks & regards Prabaharan -- 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 vi...

I suppose you can support only for welding positions. Unlike ASME Sec.IX code for process vessels & piping where the Load is uniform and the materials are restricted by code it allows for combination. But AWS D 1.1, you are subjected to Static, Dynamic & cyclic loading as well and as such there is no statement like ASME Sec.IX like combining WPS/PQR. Moreover you prepare WPS for 1 Pressure vessel and it is easy to control in the shop but whereas AWS D1.1 say for example offshore platforms, you have many varied components like Beam, Plates, girders, tubulars etc.. and it is difficult to control. Only for need based WPS to be used for AWS D1.1. Thanks & Regards J.Gerald Jayakumar 0091-8838619635 On Monday, 2 March 2026 at 02:56:11 pm IST, praba karan <prabakaran776@gmail.com> wrote: Dear experts, For...

Just to add, Pressure vessels is designed mostly for Internal pressure & external pressure. section 5.2.2 is for combination of qualified & prequalified WPS and not pertaining PQR's. Thanks & Regards J.Gerald Jayakumar 0091-8838619635 On Monday, 2 March 2026 at 04:06:29 pm IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: I suppose you can support only for welding positions. Unlike ASME Sec.IX code for process vessels & piping where the Load is uniform and the materials are restricted by code it allows for combination. But AWS D 1.1, you are subjected to Static, Dynamic & cyclic loading as well and as such there is no statement like ASME Sec.IX like combining WPS/PQR. Moreover you prepare WPS for 1 Pressure vessel and it is easy to contr...