Using of ER70S-6 in place of ER70S-2
Ranendra Chakraborty
c sridhar
You have not given the process details. Is it MIG or TIG process.
In general:
For TIG process, we use ER 70S-2 for CS welding. The shielding gas used will be Argon. Radio graphic
quality is assured due to addition of Ti, Zn & Al which removes Oxygen by forming faster oxides with it
along with Mn.& C. ER 70S-6 is available in spool form ( 15 kg or so) and not used for TIG process as it
can not provide X-ray quality welds
For MIG process, ER 70S-6 is generally used with Carbon-DI-oxide as shielding gas. ER 70S-6 has
excessive Mn & Si (1.85 & 1.15 % respectively) compared to 1,4 & 0.7 % in ER 70S-2 filler wire,
Additional Mn, & Si will remove oxides form CO2 gas to give good weld quality, but consistency to
provide x-ray quality is a question mark. ER 70S-2 could also be used but, only with Argon gas.
Sridhar.om: Ranendra Chakraborty <ranen...@gmail.com>
Sent: Thursday, 10 January 2013 12:13 PM
Subject: [MW:16480] Using of ER70S-6 in place of ER70S-2
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kannayeram gnanapandithan
nithind...@gmail.com
--
regards,
Dsilva
Sent from my iPhone
kannayeram gnanapandithan
the trailing mail. I do not think that ER70S2 is available in spool
and hope that manufacturer of welding consumable who are in this forum
may give their comments pl
Pandithan
Welding consultant
prem nautiyal
On special request and order, consumable manufacturer can provide ER 70S-2 in spool form. I have used ER 70S-2, size: 1.2mm in spool form for automated TIG applications in past.
Regards
Prem Nautiyal
9769316004
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Dindo
kannayeram gnanapandithan
understand the logic behind it which i have already explained
Pandithan
Welding Consultant
sanjeev singh
c sridhar
From: sanjeev singh <sanjeev...@gmail.com>
To: Materials & Welding <material...@googlegroups.com>
Sent: Thursday, 15 September 2016 11:40 AM
Subject: [MW:25396] Re: Using of ER70S-6 in place of ER70S-2
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John Henning
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 -
Sent: Saturday, September 17, 2016 6:10 AM
To: material...@googlegroups.com
Subject: Re: [MW:25410] Re: Using of ER70S-6 in place of ER70S-2
Kannayeram Gnanapandithan
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
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
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.
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
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c sridhar
From: John Henning <jhen...@deltak.com>
To: "material...@googlegroups.com" <material...@googlegroups.com>
Sent: Monday, 19 September 2016 5:35 AM
Subject: Re: [MW:25420] Re: Using of ER70S-6 in place of ER70S-2
John Henning
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: material...@googlegroups.com [mailto:material...@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" <jhen...@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 -
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dilintas
Kannayeram Gnanapandithan
What are you saying doesn't make sense at allWhy you need deoxidizing agents in a process with inert shielding?Sent from my Samsung Galaxy smartphone.-------- Original message --------From: 'c sridhar' via Materials & Welding <materials-welding@googlegroups.com>Date: 17/09/2016 14:10 (GMT+02:00)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 endIf 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.
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
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George Dilintas
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
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.
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
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sanjeev singh
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Diganta Sarma
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Janette M
Pieper QSI
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PGoswami
You may look at Sec-II, Pt-C, SFA 5.18, Annex, A-7 for broad descriptions of both type of consumables. ER-70S-6 is more formulated for GMAW, while ER-70S2 is more formulated for GTAW. ER-70S-6 contains more Mn and Si than ER-70S2.
A switch would be possible, when there’re no restrictions on the intended services such as :impact(notch toughness) or Environmental Assisted Cracking(EAC)as described in NACE RP-0472.
A few tips for wire shortlisting:-
· Ensure chemical analysis and mechanical properties to SFA 5.18
· Recheck the above with weld test pads as describes in SFA 5.18, if required.
· Buy from reputed vendors and or authenticated suppliers.
· Do not buy in loose packing or cut pieces from coils.
· Ensure fillers are clean and free from any chemicals & mill rust and are uniformly coated to protect against rusting.
Thanks.
P.Goswami.P.Eng, IWE.
Welding & Metallurgical Specialist
Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/
From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Pieper QSI
Sent: June 8, 2018 2:57 AM
To: material...@googlegroups.com
afghike
Janette Michelle
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