You can not use ER70S-6 for GTAW welding since it contains higher Si content than ER70S-2. ER70S-6 can be used if your shielding is by CO2 (i.e. in GMAW process). Purpose of addition of si is to flux o2 from weld when co2 is used as shielding.
Regard,
Maulik Thakkar
Welding Engineer
On Tue, Mar 20, 2012 at 10:34 PM, Maulik Thakkar <mlkthakkar2@gmail.com> wrote:
Dear all,
You can not use ER70S-6 for GTAW welding since it contains higher Si content than ER70S-2. ER70S-6 can be used if your shielding is by CO2 (i.e. in GMAW process). Purpose of addition of si is to flux o2 from weld when co2 is used as shielding.
On Tue, Mar 20, 2012 at 3:32 PM, Kavin Murugam <kavin202082@yahoo.com> wrote:Dear Asrad Azmi,Additional to Mr. Arunachalam's commentsF7P8 EH12K (P= with PWHT) / essential variables as per QW404.9Kavin Murugam0126159644From: Arunachalam A <arunvani@gmail.com>
To: materials-welding@googlegroups.com
Sent: Sunday, March 18, 2012 12:04 AM
Subject: Re: [MW:13913] use of E 7018 -1 & ER 70S-6 to weld SA 516 GR 70 MATERIAL
--ER 70-S6 weld metal chemical analysis does not meet A No. 1.If you have qualified a WPS with Er 70-S3 etc, then this wire is not acceptable. ( Manganese content is more than 1.6% in weld metal)arun
On Sat, Mar 17, 2012 at 12:23 PM, asad azmi <azmiasadayub@gmail.com> wrote:
--Dear All,Vessel is being fabricated as per ASME SEC VIII DIV 1.Base material - SA 516 GR 70 HIC - 30 mm Thk. IMPACT TEST not required.normally we are using E 7018 for SMAW, ER 70S2 for GTAW & F7P8 EH12K for SAW Process to weld above base material.Can we use E7018-1 for SMAW, ER 70 S6 for GTAW & F7P8 EH12K for SAW for the above base material.Please Advice.Thanks & RegardsAsad Azmi
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Arunachalam.A,Give a Man some Money, you make him Beggar for a Day.Make him live on Welfare schemes, you succeeded in making him Beggar for life.
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