Anyone know anything about this TIG filler?

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I'm looking for info on a TIG filler called Tigtectics 680.  I am probably way off on the spelling since it was described but not spelled out over the phone.  Anyway, the application is welding heavy walled chromolly tubing, and that is what the previous welder was supposedly using.  He's moved away, and now I can have the job - and I was just trying to figure out what exactly he was using since it's worked well so far.  Anyone heard of this stuff?
Reply:Just forget all the brand names and so forth.Welding filler wires have the ANSI number and the AWS specifications,Good companies like Lincoln call the wire by those numbers and not some name they make up which causes more confusion. Like  Lincoln NR211MP which is a structurally rated wire and the MP means multiple pass. If the name says SP it means single pass, often put on small wire feed machines.To weld chromoly use ER70S2 filler wire .045 when using a 3/32 tungsten and it will be just right.The "ER" just designates that it is a cut length filler wire. they are usually sold in 3 foot lengths. Always bend a loop on the numbered end, otherwise it is possible to poke yourself in the face or eye when bending over to pick something up, or another person in the area. Also if you look very closely on one end of the filler wire there is a small flattened portion with a number stamped into it. It should read... ER70S2There are some specialty filler wire and electrodes for Aluminum and hardened or cast metals that do have WELDCO or other names.But names like "magic rod", "golden rod" or whatever is just marketing hype.
Reply:TF - found this for you while digging a little: >>Q. Another question on 4130. Andy, I am a certified welder at NASA in Houston. We never weld carbon steels. Recently an engineer came to me about welding/manufacturing an aircraft part out of 4130. My experience in the past is that 4130 filler metal does not perform or look very good. I read your past responses on this topic and you made reference to a preferred filler metal, but I don't think you gave the full name or number type for these filler metals. Could you be more specific so we can make this purchase?Also is it necessary to normalize the heat-affected zone with an open flame when you TIG weld 4130 with this wire? Thank you. (Submitted by: Alan Weible from ****inson , Texas )A. The 4130 filler I use is a Tig-tectic brand 680 stock number. They don't give the composition of the filler. However, it welds like a cross between ER 80S-D2 and a 312 filler. It has great appearance and great strength. Other good filler options are ER70S-2, ER70S-6 and ER80S-D2. These do not give as good of coloring as the Tig-tectic 680 but has good strength and elongation percentages needed for small aircraft and race cars. If your fit-up is tight enough you do not need to stress relieve the heat zone. Keep as tight of an arc length as possible to reduce total heat input to the parent metal. If you feel you need to stress relieve because of poor fit up or excessive heat input, use a 900deg. temp marker and mark about 3/4 to 1 " away from the weld area. Use a neutral flame and avoid any hot spotting.<<John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:er70 filler is not 'the' filler for welding chromoly but one of many suitable choices depending on the application of the partcourtesy of a quick google, here's the MSDS sheet for tigtectic 680...  http://www.eutectic-na.com/usamsds/6...sds%203-07.pdfappears to be a Cr Ni Mn alloy with pretty sloppy controls over content from the quick glance i tookwww.eutectic-na.com (the company behind it) will probably furnish more infoany more info about the application?
Reply:Here is a good reference chart for compatible or simliar filler types, SEE PAGE 77: http://www.chromate.com/AgentCatalog...ction%2040.pdf....7th line down, under heading Eutectic.John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Universal Stainless Steel bare rod. Yes Rod.  Tensile Strength: 86,000 psi, 45% elongationJohn -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:TIG 680 is "ER 312" and is TIG equivalent to stick electrode "E 312-16".Typical chemical composition is:- C=0.10 %,- Cr=30.0 %,- Ni=10.0 %.- Mn=1.5 %,- Si =0.40 %.All major suppliers should be able to offer this great austenitic-ferritic rod. Just ask for it. It would work fine at 4130 base materials as well as over the broad range of difficult-to-weld steels.Do forget any "super-secret" magic rods etc... No secrets in welding, just knowledge!
Reply:I think that is the same thing as super missile weld.
Reply:Thank you for all that information.  I use Eutetic 680 stick.  Its the best stuff to weld a nut to a broken off bolt.  Can't find it any more.  I will try to get some E 312-16 and see if it works the same.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Thanks for the info guys!  I just wanted to see what the previous guy was using.  I was going to use ER80S-D2 myself, but might see if I can find this 680 and play with it a little first.  The application is a sway bar for a sports car that is made from 1/4" wall chromolly tube.  There is a center section and then 2 sides are welded to it along with threaded bungs on the ends of the sides.
Reply:You can use 70S-2 with no problem whatsoever.. ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:obviously the method used works but anti roll bars are usually hardened and tempered (to around HRC 38-40) after fabrication. neither of the fillers mentioned will respond to PWHT.
Reply:Originally Posted by riley mcmillanI think that is the same thing as super missile weld.
Reply:A little more about chromally filler wires.Chromally is very hard and brittle so how you weld it and the filler will effectthe way it will acts when tested to destruction. Will it bend then let go, or will it crack etc.,. Yes there are choices.BTW 312 used to be used when stainless was welded to steel. First a ("buttering pass") was made with 310 then covered with 312. Very time consuming. That method was replaced with 309 in a single pass. Saved a lot of time.I can tell you from personal experience that Tubular engine mounts i built for aircraft were tested to destruction. They went 7 times past the 7G load limitat which time the static test was terminated for safety reasons. The structure was about 1/4 inch out of limits in one direction. No cracks.Yes I was nervous,The frames were welded with ER70s2. Not stressed relieved at that time.I was satisfied. So was the IA.Last edited by Donald Branscom; 01-09-2008 at 07:41 PM.
Reply:Originally Posted by Donald BranscomIt was around and popular for a while.Believe it was stick electrode for aluminum. You can goggle it and see what you come up with. It was PRE COMPUTER however so..???
Reply:Originally Posted by riley mcmillanEutectic 680 and the equivalent super missile weld are not for aluminum.  It is a recommended filler for different types of steel.  I have used a lot of it in the past and it is beautiful and lovely stuff.