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From: "pgoswami" <pgoswami@quickclic.net>
Sender: materials-welding@googlegroups.com
Date: Fri, 12 Apr 2013 21:53:10 -0400
To: <materials-welding@googlegroups.com>
ReplyTo: materials-welding@googlegroups.com
Cc: <mhaskar.aly@gmail.com>
Subject: [MW:17359] RE: 17336] Request to provide filler metal & Flux combination for SAW process for low temperature service with Heat treatment
Hi Aly ,
Attached please find some very relevant information on SAW wire and flux combinations guaranteed for good impact down up to -46 Deg C. If both impact and sour service hardness requirements are involved then EM12K would be the "most preferred option". However for this wire advise would be to get a weld metal composition so as to get "Mn" around 1.2% max.
Higher "Mn" SAW wires e.g EH12K is good to guarantee the UTS and impact after PWHT , however meeting NACE hardness could be a problem. If the material to be welded is SA 516/70, there should not be many issues, however while welding thicker sections of SA 537Cl1, EM12K sometimes may under match the UTS.
It would be advisable to get consumable manufacturer's recommendations meeting all the technical requirements.
I hope this would help you.
Keep posted.
Regards
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Aly
Sent: Wednesday, April 10, 2013 12:25 PM
To: materials-welding@googlegroups.com
Subject: [MW:17336] Request to provide filler metal & Flux combination for SAW process for low temperature service with Heat treatment
| Dear Experts, We are going to qualify welding procedure of following details 1. Welding with · GTAW with ER70S2 · SMAW with E7018-1 & · SAW 2. Heat treatment after welding at 620°C @ 200min 3. Impact testing after heat treatment at -46°C Kindly advise on filler metal & Flux combination for SAW process to achieve impact properties after heat treatment. Can F7A8 EM12K will this serve the purpose…!! Thanks & regards Ali Mhaskar, | ||
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