Re: [MW:13958] use of E 7018 -1 & ER 70S-6 to weld SA 516 GR 70 MATERIAL

Hi Murugam,

One can choose to weld with a electrode classified for PWHT applications, for welding non-PWHT applications, this is not an essential variable, however for SAW process - it's same in this case

Hi Asad,

You can replace E7018 with E7018-1 but not ER70 S2 with ER70 S6 due to change in chemical composition (high Mn content).


Regards
Manpreet Singh



Dear Asrad Azmi,
Additional to Mr. Arunachalam's comments

F7P8 EH12K (P= with PWHT) / essential variables as per QW404.9


Kavin Murugam
0126159644


From: Arunachalam A
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 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 & Regards

Asad Azmi
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