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7018 vs. 7018-1?

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  • 7018 vs. 7018-1?

    Can anyone explain the difference between the "normal" 7018 I've been using (Atom Arc 7018-H4R, Lincoln Excalibur 7018 MR) and 7018-1? Is the 7018-1 supposed to be easier to run off position?

    I tried a few sticks of 7018-1 at school and it ran terrible. (I think it was McKay brand). I'm not sure whether it was because it was stale rod, operator error, or there's something else I'm missing.

    Thanks, Matt
    2007 Miller Dynasty 200 DX
    2005 Miller Passport 180

  • #2
    mr 57 i cant help you with your question, but was wondering what made you come up with < mr 57> for your name on this forum. three years ago i bought a 57 chev wagon, thats where 57belair came from. its a project car.

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    • #3
      Originally posted by MR.57 View Post
      Can anyone explain the difference between the "normal" 7018 I've been using (Atom Arc 7018-H4R, Lincoln Excalibur 7018 MR) and 7018-1? Is the 7018-1 supposed to be easier to run off position?

      I tried a few sticks of 7018-1 at school and it ran terrible. (I think it was McKay brand). I'm not sure whether it was because it was stale rod, operator error, or there's something else I'm missing.

      Thanks, Matt
      The (-1) = low temp impact
      H4 or H8 is Hydrogen content (4ml/100g)
      R= meets moisture test.

      See AWS A5.0

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      • #4
        Originally posted by FATFAB View Post
        The (-1) = low temp impact
        H4 or H8 is Hydrogen content (4ml/100g)
        R= meets moisture test.

        See AWS A5.0
        Hey that's interesting, thanks for posting that up. That explains why almost all the 7018 here is -1, a person pretty much has to go out of their way to find non -1 7018.
        hre

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        • #5
          FatFab - Thanks, I'll look it up the AWS ref. and see if I can decipher it. The H4R designation I knew, but I still don't know what "low temp impact" is supposed to mean.

          Originally posted by 57Belair View Post
          mr 57 i cant help you with your question, but was wondering what made you come up with < mr 57> for your name on this forum. three years ago i bought a 57 chev wagon, thats where 57belair came from. its a project car.
          MR is my initials, 57 is a street address. Short and easy to remember.
          I had a '56 1/2 ton truck for a little while, but that's the closest I've come to owning a tri-5 Chebby. Prices have just gotten too crazy in the last 10 years. Barrett Jackson maybe to blame?
          2007 Miller Dynasty 200 DX
          2005 Miller Passport 180

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          • #6
            Originally posted by MR.57 View Post
            FatFab - Thanks, I'll look it up the AWS ref. and see if I can decipher it. The H4R designation I knew, but I still don't know what "low temp impact" is supposed to mean.
            it has to do with the ductility of the weldment when very cold (though I don't know the spec. temp).
            Bobcat 225NT
            Cutmaster 52
            Lincoln Weld-Pak 100 buzz box
            Caterpillar TH63
            '07 Kawasaki ZZR600

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            • #7
              From looking at Lincoln's data:
              7018 Charpy V-notch is done at -20F
              7018-1 Charpy V-notch is done at -50F (brrr! that's cold!)
              2007 Miller Dynasty 200 DX
              2005 Miller Passport 180

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