Re: [MW:18070] RE: 18059] ER316LSi

Dear Mohamed Elsayyid:

What Was you client's reasoning for rejecting ER316-Si...?

There Should be either a clause in your specification (or applicable standard) or there is some background.

It largely depends on application. I remember a client specifically asking for Si-alloyed SS-fillers. The job was fabricating pressure vessels for a chocolate factory. They required smooth weld beads (though they asked for buffing in the end...!!!).

Please find out their point and update your query.

Regards

Ramin Kondori

Sr. QA/QC Engineer

SINOPEC

r.kondori@petroyada.com
+98-2123592322
+98-9132150320

On Mon, Jul 1, 2013 at 9:41 PM, John Henning <jhenning@deltak.com> wrote:

Please see the following from Praxair, Gas Metal Arc Welding of Stainless Steel:

 

Silicon – Silicon acts to deoxidize the weld

puddle. Silicon reacts with oxygen in the

weld puddle before metallic elements such

as iron and chromium. This deoxidation

cleans the puddle, and silicon dioxide impurities

float to the surface of the puddle.

They then freeze (along with manganese

dioxide) to form slag islands. Silicon is also

added in higher concentrations to some

filler materials to improve the fluidity of

the puddle. When silicon reacts with oxygen,

heat is released (exothermic reaction)

which makes the puddle more fluid. High

silicon wires can create more slag islands

that may cause more grinding in multipass

weldments. High silicon wires are not

recommended for joints under extreme

restraint as the crack resistance of the

standard filler metals is superior.

 

My opinion is that it would be suitable for your purpose with the knowledge that your weldors may have to pay more attention to removing any silicon islands that form between passes.

 

John A. Henning

Welding & Materials

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of
mohamed elsayyid

Sent: Sunday, June 30, 2013 10:24 PM
To: materials-welding@googlegroups.com
Subject: [MW:18059] ER316LSi

 

Dear Experts,

 

   the subject filler ER316Lsi was rejected by the client at Kazakhstan can you explain the silicon factor and can i use it on 316L stainless steel lines that we use for sewage water treatment ? please advise.

 

Best Regards,

Eng. / Mohamed El Sayed                                                                      

 

 

 

--
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/groups/opt_out.
 
 

______________________________________________________________________
The information in this email is confidential, and is intended solely for the addressee(s). If you are not the intended recipient of this email please let us know by reply and then delete it from your system; you should not copy this message or disclose its contents to anyone. The internet can not guarantee the integrity of this message. HAMON (and its subsidiaries) shall (will) not therefore be liable for the message if modified.
______________________________________________________________________

--
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/groups/opt_out.
 
 

--
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/groups/opt_out.