Mr. Chakraborthy,
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 <ranendrac6@gmail.com>
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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 <ranendrac6@gmail.com>
To: materials-welding@googlegroups.com
Sent: Thursday, 10 January 2013 12:13 PM
Subject: [MW:16480] Using of ER70S-6 in place of ER70S-2
Sent: Thursday, 10 January 2013 12:13 PM
Subject: [MW:16480] Using of ER70S-6 in place of ER70S-2
Dear Expert,
Please guide whether ER70S-6 can be used in place of ER70S-2. Please give code reference.
Regards,
Ranendra
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.
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