Hi Arunabh,
EIL definitely has access to API documents. API TR 938-B(2008)-is on Use of9Cr-1Mo-V steel for refining and petrochemical applications.
Below are the recommended practices on performing dissimilar welds between grade-91 and austenitic stainless steel.
The ideal consumable would be Inconel-82/182 (E-NiCr-Fe3) or Inco weld-A type.The latest development for such dissimilar welds is EPRI-Program 87, welding consumable manufactured by Metrode.
E/ER-309 type welding consumable is certainly outdated.You may bring this to the notice of EIL Standard developments group.
Hope this info would be of help.
Thanks
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
pradip_goswami@yahoo.ca
6.4.8.2 Joining to Stainless Steel
Transition pieces or multiple buttering/PWHT operations may also be necessary when joining Grade 91 steel with austenitic stainless steels because sensitization may take place if PWHT is applied to stainless steel. In this case, Grade 91 is buttered with Ni-Cr-Fe filler metal, PWHT is performed at P91 PWHT temperature, and the weld to SS is completed using same filler metal. Further PWHT typically is not required .
6.4.8.3 Filler Metal Selection
Weld filler metal selection possibilities for dissimilar metal welding are shown in Table 11. When nickel base welding consumables (E/ERNiCrMo-3) are used, it is advisable that the manufacturer confirm that these filler metals will not embrittle at the high PWHT temperature of 9Cr-1Mo-V steel.
----On Tue, May 27, 2014 at 4:42 PM, ARUNABH BERA <bonjoe23@gmail.com> wrote:
Dear All--Kindly clarify the doubts:Sir in Ethylene Cracker Furnace at one of the Petrochemical Plant, we have a hook-up between P-91 and SS304H. Here we are using ER309 as the filler.Is it acceptable, if not what can be the probable problems associated with the filler selection and what are the solutions
RegardsArunabhEngineers India Limited
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
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.
For more options, visit https://groups.google.com/d/optout.
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
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.
For more options, visit https://groups.google.com/d/optout.
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
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.
For more options, visit https://groups.google.com/d/optout.
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
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.
For more options, visit https://groups.google.com/d/optout.
No comments:
Post a Comment