The A No 1 in the WPSs and PQR with ER70S-6 is a common finding during ASME joint reviews. In such cases just insert a note in the WPS on Mn and Si max content
2016-09-19 3:05 GMT+03:00 John Henning <jhenning@deltak.com>:
--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 forTIG 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/ .MWHPR03MB281615CF5428E48D9F21C F18A1F50%40MWHPR03MB2816. namprd03.prod.outlook.com
For more options, visit https://groups.google.com/d/optout .
Dr. Georgios Dilintas,
Dipl. Ing. In Aeronautic and Space Engineering
Ph.D in Mechanics of Solids - Computational Mechanics
A.I.S, A.N.I, IRCA Lead Auditor
Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis
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/CAPOi40CA5w2m6sFNh6%3DR-wEg77tstGp2b1BtaZj6VDarmedoEA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
Comments