At least in the US and, I believe, in Europe both types are readily available in cut lengths for GTAW. Although ER70S-2 is more commonly available at non-traditional outlets. Procurement of ER70S-6 has not been a problem for my company.
Perhaps ER70S-6 cut length for GTAW is not common elsewhere; I would not know that.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan
Sent: Sunday, September 18, 2016 8:59 PM
To: materials-welding
Subject: Re: [MW:25421] Re: Using of ER70S-6 in place of ER70S-2
Generally ER 70S6 is not coming in Rod forms unless specifically asked for and ER 70S2 is coming in coil form unless asked for it. Since pure argon is being used in GTAW, Mn and Si are to be controlled as John said, otherwise we may face hardness problem. If ER70S2 is in coil form, most of Ti will get deoxidized in the arc and less will get transfered to weld metal. Adding Ti to coil form will not give any yield
On 19-Sep-2016 5:36 am, "John Henning" <jhenning@deltak.com> wrote:
Your comment on ER70S-6 is most certainly untrue. GTAW with ER70S-6 will yield superbly clean welds and exceed all X-ray requirements provided the base metal is clean to start with. The bonus is that ER70S-6 will have significantly better impacts than ER70S-2 especially when PWHT is required. In my experience, welders seem to like the flow and wetability characteristics of the -6 over the -2. The downside of -6 is that as the Mn and Si are higher, it is more difficult to reduce the hardness of the weld. Also, to meet many petro-chem requirements for A1 chemistry limits for carbon steel filler metals, one often has to specify a maximum of 1.6% Mn and 1.0%Si. This typically is not a problem for filler metal suppliers.
Triple deoxidized ER70S-2 is often preferred for the first pass of an open root joint. But the presence of these deoxidizers leads to welds with far more inclusions (microscopic SONIMS) than with -6. The plethora of SONIMS results in the overall poorer impact performance.
Enjoy -
From: 'c sridhar' via Materials & Welding <materials-welding@googlegroups.com>
Sent: Saturday, September 17, 2016 6:10 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:25410] Re: Using of ER70S-6 in place of ER70S-2
You have not mentioned the welding process in use at your end
If it is TIG, flat no. as 70 S2 contains triple deoxidisers Al, ZN & Ti and used with argon gas.
ER 70S06 does not have them and will not give x-ray quality welds.
If it is MAG/CO2 process or with argon gas, you can go ahead.
Ti addition alone with 70 S6 do not help. S6 also contains excessive Mn & Si and not used for
TIG process.
Sridhar.
From: sanjeev singh <sanjeevsinghfbd@gmail.com>
To: Materials & Welding <materials-welding@googlegroups.com>
Sent: Thursday, 15 September 2016 11:40 AM
Subject: [MW:25396] Re: Using of ER70S-6 in place of ER70S-2
Please guide- If we add Ti in ER70S-6 in range of 0.011%, what will be the effect during CO2 welding?
regards,
Sanjeev
On Thursday, 10 January 2013 12:13:36 UTC+5:30, Ranendra Chakraborty wrote:
Dear Expert,
Please guide whether ER70S-6 can be used in place of ER70S-2. Please give code reference.
Regards,
Ranendra
--
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.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/07c21334-a631-40b0-b66e-65075cde9914%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
--
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.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/81069408.169321.1474110634168%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.
--
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.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/MWHPR03MB281615CF5428E48D9F21CF18A1F50%40MWHPR03MB2816.namprd03.prod.outlook.com.
For more options, visit https://groups.google.com/d/optout.
--
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.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4eNhdnUk3qX%2BQ%2Bf_vo940-TSiW_OjzoWzW249VakzxVOqQ%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
No comments:
Post a Comment