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3.5 Nickel Electrode

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  • 3.5 Nickel Electrode

    Could you please write if the electrode for welding 3.5 Nickel A333 Gr3 material is stopped from production and is not available in the market? Electrodes 7018-C2L / E8016-C2 are designated in our specification. If these electrodes are not available then what is the alternative electrode that can be used as the impact test requirement is -101 deg.C. Can 7018G be used ?
    Please advise on an urgent basis.

  • #2
    Try Lincoln's knowledge base. If you can't find the answer there you can email them and they will give you an answer.
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    • #3
      3.5 Nickel Electrode

      Thanks Rogers!
      I have written to Lincoln, Esab, Oerlikon and Kobe Steel and yet to receive any reply from them.

      Comment


      • #4
        llalbabu 3.5 Nickel Electrode

        --------------------------------------------------------------------------------
        Could you please write if the electrode for welding 3.5 Nickel A333 Gr3 material is stopped from production and is not available in the market? Electrodes 7018-C2L / E8016-C2 are designated in our specification. If these electrodes are not available then what is the alternative electrode that can be used as the impact test requirement is -101 deg.C. Can 7018G be used ?
        Please advise on an urgent basis.


        You can use one of these 8018 - C1
        designed for welding 2% to 4% nickel bearing steels for low temperatures

        OR

        8018 C- 2
        designed for welding 2% to 4% nickels steels also designed for low temerature

        I cant find a 8016 -C2 or 7018 - C2L

        Comment


        • #5
          3.5 Nickel Electrode

          Hi
          Here my contractor is planning to weld with E7018G which has only 0.5% Nickel for root and the rest of passes with E 8018-C2. But can E 7018G be used for welding A333 Gr3 material?
          They say that the dilution effect of hot pass will blend the metallurgical properties of E 7018G and hence can be used.

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          • #6
            Originally posted by llalbabu View Post
            Hi
            Here my contractor is planning to weld with E7018G which has only 0.5% Nickel for root and the rest of passes with E 8018-C2. But can E 7018G be used for welding A333 Gr3 material?
            They say that the dilution effect of hot pass will blend the metallurgical properties of E 7018G and hence can be used.

            Okay this A333 Gr3 material the only thing that comes close to this is

            Nickel steels are 2015,2115,2 1/2% ni steel,2315,2320,2330,2340.

            and

            medium nickel - Chromium steel and they are 3115,3125,3130,3140,3150,3215,3230,3240,3250,3315, 3325,3435,3450.

            I would have to say NO.

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            • #7
              3.5 Nickel Electrode

              Darmik
              Thanks for throwing some light on the subject.
              API RP 582 restricts welding 3.5 Nickel to 3.5 Nickel material with E80XX-C2 or E70XXC2L.
              It also seems that E7018G is limited to impact toughness upto -46 Deg.C

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