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Thread: 4130 Moly Links

  1. #1
    Join Date
    Oct 2013
    Posts
    1

    Talking 4130 Moly Links

    Hey guys I'm a little new to this TIG thing esp when it comes to picking fillers and tungsten. I did a search and couldn't find anything that was like what I'm doing so here it is... I have 2" OD 1/4" wall 4130 chromoly tubing for links on my mega truck and the weld in bungs are 4130 as well. I'm pretty sure to use the 2% correct? but what about filler? I've heard some people using a stainless rod on the moly. I know different applications call for different filler but I've also heard of people having luck with the er80s2. also the whole link bar is gonna be heat treated so will that change my use of filler? any help is appreciated.

  2. #2
    Join Date
    Jul 2008
    Location
    East Tennessee
    Posts
    614

    Default

    If it's gonna be heat treated weld it with 4130 if not use er80sd2
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  3. #3
    Join Date
    Oct 2012
    Location
    yuba city, CA
    Posts
    53

    Default "heat treated"

    ......and by "heat treat" you mean ?????

    normalize/stress relieve?

    full bore harden and temper?

  4. #4

    Default

    Right, it's not heat treating chrome-mo it's normalizing it. Er80s2 will be fine.especially with both parts in chrome-mo
    Quote Originally Posted by dave powelson View Post
    ......and by "heat treat" you mean ?????

    normalize/stress relieve?

    full bore harden and temper?

  5. #5
    Join Date
    Jul 2008
    Location
    East Tennessee
    Posts
    614

    Default

    Quote Originally Posted by Showdog75 View Post
    If it's gonna be heat treated weld it with 4130 if not use er80sd2
    I was referring to normalizing/stress relieving.
    Dynasty 200DX "Blue Lightning"
    Bernard 3500ss water-cooler
    Rockwell vertical mill
    Beverly Shear B-3
    Beverly Shear JR
    Home-made English wheel
    Milwaukee Porta-band
    " Sawz-all
    Tennsmith 36" stomp shear
    Fixer upper 1968 Redface Lincoln sa200
    Powcon 300st

  6. #6
    Join Date
    Nov 2003
    Posts
    3,165

    Default

    ER-70 S2... NOT ER-80....

    Please read this thread for clarity...

    http://www.millerwelds.com/resources...043#post314043
    .

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