Crack in Duplex S.S material

[ABHISHEK SINGH]

Dear Experts,
We got longitudinal crack on material SA240UNS31803 (D.S.S material).This is found after RT.Following consumable we used: Wire-ER2209,Flux-15W(Sandvik).

Please share your experiance regarding this.

Thanks & Regards
Abhishek

[Jian Xu]

Dear Abhishek,

Maybe you should check the whole welding process whether is corrdance with WPS . And you can do some basic test for the failure part, such as ferrite content.

To confirm root cause, then identify which welding process generate impact.

Thanks

Leon 

[Jim Price]

What grade of duplex are you welding?

Lean or Super governs the amount of heat input allowed.

What welding process are you using? What shielding gas are you using?

 

Jim

--
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-weld...@googlegroups.com.
To post to this group, send email to material...@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/0969469b-fb7a-45b0-ab1d-515fbcad38c7%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Ramin Kondori]

Dear Abhishek

Please provide us with more info as following:

1. When did crack appear (immediately after welding or after a couple of days or in service...?)
2. A photo of the crack (is the crack in weld of HAZ...?)
3. Is the crack in root side of face...?
   
4. Thickness of material
5. Heat input during welding (KJ/mm)
6. Did you control inter-pass temp...?
7. Did you use any gas for back purge...?

Best Regards

Ramin Kondori

Sr. QA/QC engineer

Yadavaran Oilfield Project

SIPC (SINOPEC)

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/e21113463cf848afb6cbbccc2d641b7d%40POLARMAIL.PolarTank.local.