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Spot Welding Machine for ER70S-2 or ER70S-6 for TIG

Spot Welding Machine for ER70S-2 or ER70S-6 for TIG

Welding Automation for ER70S-2 or ER70S-6 for TIG

laser Welding Machine for ER70S-2 or ER70S-6 for TIG

Welding Automation for ER70S-2 or ER70S-6 for TIG

Welding Automation for ER70S-2 or ER70S-6 for TIG

Platform Spot Welding Machine for ER70S-2 or ER70S-6 for TIG

Platform Spot Welding Machine for ER70S-2 or ER70S-6 for TIG

ER70S-2 or ER70S-6 for TIG


Tue, 31 Aug 2021 15:28:16 GMT
I have noticed that the most common MIG wire is the ER70S-6 but my welding supplier has the -2 for TIG rod.  He can order the -6 but I am wondering which would be better for most mild steel welding.  Why the -6 for MIG but the -2 for TIG?  Which will provide the most strength and best appearance?  Most of my TIG welding is mild steel square tubing or DOM round tube.  I have used W-1200 for these applications and like how it welds but am wondering how that would compare to the other alloys mentioned above.  Maybe I should just call Harris?
Reply:I use 70S-2 mostly..If the LWS don't have any -2 then I get whatever is there..I see no difference in either filler.....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:Are Oxy-fuel 70S-2 filler rods  the same as Tig 70S-2?
Reply:The only difference between the two is designated by the S-2/6.  S-6 has higher silicon content making it better for welding in situations where there might be a little bit of contamination.  The silicon removes the impurities from the weld pool and traps them in the little slag islands that are more commonly seen with this wire.S-2 is more common for TIG because generally you should have all contaminates removed before hand.All ER70S filler is the same regardless of being in spool form or cut lengths.  Oxy-fuel filler designated RG-45/60 is not the same.Have we all gone mad?
Reply:I find s-2 has a slightly more sluggish puddle than s-6 with a slightly more fluid puddle. I prefer s-2 more for out of position work.s-2 is what we use for root welding in pipe for the most part.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:Originally Posted by fusmanAre Oxy-fuel 70S-2 filler rods  the same as Tig 70S-2?
Reply:Originally Posted by txcarbuilderI have noticed that the most common MIG wire is the ER70S-6 but my welding supplier has the -2 for TIG rod.  He can order the -6 but I am wondering which would be better for most mild steel welding.  Why the -6 for MIG but the -2 for TIG?  Which will provide the most strength and best appearance?  Most of my TIG welding is mild steel square tubing or DOM round tube.  I have used W-1200 for these applications and like how it welds but am wondering how that would compare to the other alloys mentioned above.  Maybe I should just call Harris?
Reply:For you application i would use s-2. I use both but  i like how s-6 wetts in better. Out of position work s-2 is much better.Ya gotta spend money to make money!
Reply:Thanks for the information.  Has anyone got any opinion about using bare rod for TIG rather than the copper coated?  My supplier has the coated rods but says he can order the bare.  In a welding book I have the author stated that he thought the bare rod was better as the copper could cause imperfections in the weld.  I figured it would get completely burned off during the welding process but maybe he feels that while it is burning it introduces some undesirable affects.
Reply:The copper coating is added to prevent rust from forming during storage, and will not contaminate the weld. If I am welding mild steel and am haveing problems with spitting and porosity due to the material not being properly cleaned, I will substitute 309L for the S-2. I normally don't do a lot of TIG welding on mild steel, so I don't keep ER70S-6 on hand.
Reply:Originally Posted by Donald BranscomYes they are the same. It is ER70S-2 The (ER) stands for cut lengths.But as mentioned before Oxy-actyelene requires copper coated steel filler wire (RG-45/60).
Reply:+1 for sn0boarder! the -6 has a higher silicon for slightly contaminated base metal (SLIGHTLY being key). If your metal is clean, as it should be, you should be using the -2, as the -6 can possibly cause problems if there is no contamination to scavenge. As for the ER, it is an AWS designator, the E designating Electrode (as in MIG welding) and the R designating Rod, as in TIG welding. That is why both processes can use the same filler. A stick electrode only has the E designator. The 70 (or whatever number it is) is the tensile strength of the weld metal in thousands of pounds per square inch. The S stands for Solid wire. If it were a T instead, that would mean Tubular, as in flux-cored wire. I know this was rather lengthy, but I hope it helps...
Reply:Originally Posted by VinnieThe er is not for cut length description. I have a roll of lincoln l-56 .035"mig wire on my bench as we speak its designation of ER70s-6 is clearly printed on the label lets not start a statement that er represents only cut lengths not true.Vinnie
Reply:I have cut some mig wire off my mig machine  (70S6)  and used it when I have had porosity problems with the material I was welding with S2......As mentioned it does wet out better but not sure it is as strong for tig use?  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:Originally Posted by B_CI have cut some mig wire off my mig machine  (70S6)  and used it when I have had porosity problems with the material I was welding with S2......As mentioned it does wet out better but not sure it is as strong for tig use?
Reply:Both have the "same" properties er70s6 is er70s6Vinnie
Reply:Got it........  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:thanks for the clarification guys

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