[MW:2761] Re: 2742] Weld Crack at Root trough weld metal

Dear Shiva,

 

As said by Mr Ali , you must do all the NACE test HIC , SSCC .

 

This 8010 Electrodes are with high level of Hydrogen more then 15 ml / 100 gm .

 

The weld has cracked due to delay cracking .

 

Hope you have done the batch test of the consumable you are using for NACE tests ,

 

AS suggested you can use 7010 Electrode's after batch testing .

 

The other optin is also to go for 7016 down hand electrode .

 

Regards,

 

Sujeet Sangle

 

0091 9987781204

 

On 7/22/09, Ali Varmazyar <av-ssg@msa.ir> wrote:

Surry, I forget to talk about your service. if your service is sour then you
must consider Nace MR0175/ISO15156-2 requirements too.

Best Regards

A.  Varmazyar

MSA -Welding Engineering Department
Msa,Arak,Markazi,IRAN - P.O. 148
Tel.: +988612172725~6
Fax: +988612172702


-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of shiva
Sent: Tuesday, July 21, 2009 6:04 PM
To: Materials & Welding
Subject: [MW:2742] Weld Crack at Root trough weld metal


We are using API 5L X65 grade material for sour environment. With
reference to our WPS we used (Ador electrodes) e 8010 for root and
8018 for hot fill pass.
We took NDT and its okay. But after 1 month 4 weld joints crack. We
checked the macro hardness for existing and cracked joint . There was
a high hardness eg 351, 329 on root and in weld metal cap side 280
above. Which is very high.

Can you please tell me for this material what type of electrodes to be
used? And why this occoured ?? And what may be possible reason for
this occourance?

Regards,
Y.C.Shiva,
QA/QC Engineer,
+974 6166465
Doha Qatar.


--~--~---------~--~----~------------~-------~--~----~
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/
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.
-~----------~----~----~----~------~----~------~--~---