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  • Which type of gas to use? Beginner.

    Hi, I am new to the site and also to welding. I have a question about which type of gas to use with different materials. How do you know which type of gas to use with a specific metal? Such as stainless steel, or regular steel, and so on? Does it just take experience working with those types of metals that you eventually learn what goes with what? I am confused by this. Thanks a lot and I hope to here from some of you..

  • #2
    Originally posted by Baktc88 View Post
    Hi, I am new to the site and also to welding. I have a question about which type of gas to use with different materials. How do you know which type of gas to use with a specific metal? Such as stainless steel, or regular steel, and so on? Does it just take experience working with those types of metals that you eventually learn what goes with what? I am confused by this. Thanks a lot and I hope to here from some of you..
    The Praxair Shielding Gas Manual..

    will explain the why's and wherefores of gas selection...

    here is the link to download the PDF..

    http://www.prest-o-sales.com/other_l...n%20Manual.pdf
    .

    *******************************************
    The more you know, The better you know, How little you know

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

    Comment


    • #3
      Reading the Praxair guide can be like drinking from a fire hose. Also, their proprietary shielding gas names and mixtures can be confusing at first.

      Here's another, more basic discussion with a simplified shielding gas chart that might get you going faster:

      http://www.lincolnelectric.com/en-us...c-welding.aspx

      Across the top of the table are the welding processes and the column on the left are the common materials.

      HTH,
      Mike

      Comment


      • #4
        Too Simple to be useful...

        Originally posted by SdAufKla View Post
        Reading the Praxair guide can be like drinking from a fire hose. Also, their proprietary shielding gas names and mixtures can be confusing at first.

        Here's another, more basic discussion with a simplified shielding gas chart that might get you going faster:

        http://www.lincolnelectric.com/en-us...c-welding.aspx

        Across the top of the table are the welding processes and the column on the left are the common materials.

        HTH,
        Mike
        Sometimes "simplified" removes the meaning of the lesson...

        that chart loses the "WHY" as to the use of the various gasses and mixes...

        it is very useful for the weldor to understand at least a little of the physics of the interaction between gas and metals being welded..

        Keep a copy of the manual for reference... no need to swallow all of it in one sitting... that is part of the beauty of having free PDF technical downloads..

        AND...

        as far as tradenames... it seems that the suppliers like the confusion for marketing purposes...

        However... simple solution is yet another Free PDF download... "Cross Reference"....

        http://www.aoc.com.mx/biblioteca/tab...PROTECCION.pdf

        that should remove a lot of the mystery...
        .

        *******************************************
        The more you know, The better you know, How little you know

        “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

        Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

        My Blue Stuff:
        Dynasty 350DX Tigrunner
        Dynasty 200DX
        Millermatic 350P w/25ft Alumapro & 30A
        Millermatic 200

        TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

        Comment


        • #5
          Certainly no arguments from me. Fundamentals is fundamentals, and understanding the "why" is usually the key to figuring out and solving problems.

          That cross reference .pdf is very nice. Thanks for that link!

          Comment


          • #6
            Just give him the dam answers to his questions
            Mig welding.>>
            Stainless steel uses trimix gas.
            Aluminum uses argon. And
            Mild steel uses 75/25 argon co2 mix. .
            On aluminum dont forget to swap your polarity

            Tig all straight argon. 100%
            .
            Miller Bobcat 225NT onan
            Millermatic 211
            Spoolmate 100
            (Retapped to fit regular mig tips)
            Work better & less parts to stock.
            Miller 130xp
            T/A Dragster 85 (portability 11 pounds)
            Oxygen/Acetylene torch set 50'
            2. 4-1/2" grinders
            1. 9" grinder
            14" Makita chop saw
            1/2" Aircat impact gun 900#

            Comment


            • #7
              Originally posted by eecervantes83 View Post
              Just give him the dam answers to his questions
              Mig welding.>>
              Stainless steel uses trimix gas.
              Aluminum uses argon. And
              Mild steel uses 75/25 argon co2 mix. .
              On aluminum dont forget to swap your polarity

              Tig all straight argon. 100%
              You must live in a very simple world...

              too bad the real one is not always that straightforward...
              .

              *******************************************
              The more you know, The better you know, How little you know

              “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

              Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

              My Blue Stuff:
              Dynasty 350DX Tigrunner
              Dynasty 200DX
              Millermatic 350P w/25ft Alumapro & 30A
              Millermatic 200

              TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

              Comment


              • #8
                Originally posted by eecervantes83 View Post
                Just give him the dam answers to his questions
                Mig welding.>>
                Stainless steel uses trimix gas.
                Aluminum uses argon. And
                Mild steel uses 75/25 argon co2 mix. .
                On aluminum dont forget to swap your polarity

                Tig all straight argon. 100%


                Im I missing something? swap your polarity for aluminum? Did you mean flux core wire?
                sigpic

                Dynasty 200 DX
                Millermatic 350P
                30A Spoolgun
                Lincoln Pro Mig 140
                Hypertherm Powermax 30
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                40 ton press brake
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                1x42 / 4x48 belt grinder

                Comment


                • #9
                  Originally posted by ja baudin View Post
                  Im I missing something? swap your polarity for aluminum? Did you mean flux core wire?
                  you are correct...

                  maybe his world is flipped ....
                  .

                  *******************************************
                  The more you know, The better you know, How little you know

                  “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                  Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                  My Blue Stuff:
                  Dynasty 350DX Tigrunner
                  Dynasty 200DX
                  Millermatic 350P w/25ft Alumapro & 30A
                  Millermatic 200

                  TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

                  Comment


                  • #10
                    Originally posted by H80N View Post
                    Sometimes "simplified" removes the meaning of the lesson...

                    that chart loses the "WHY" as to the use of the various gasses and mixes...

                    it is very useful for the weldor to understand at least a little of the physics of the interaction between gas and metals being welded..

                    Keep a copy of the manual for reference... no need to swallow all of it in one sitting... that is part of the beauty of having free PDF technical downloads..

                    AND...

                    as far as tradenames... it seems that the suppliers like the confusion for marketing purposes...

                    However... simple solution is yet another Free PDF download... "Cross Reference"....

                    http://www.aoc.com.mx/biblioteca/tab...PROTECCION.pdf

                    that should remove a lot of the mystery...

                    Yea I would like to know why which gas works best with which material and understanding why it is that way! I will download both PDF's! Thanks for the help!

                    Comment


                    • #11
                      Just Curious...

                      is

                      "Baktc" for "Back to Sea"......
                      .

                      *******************************************
                      The more you know, The better you know, How little you know

                      “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                      Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                      My Blue Stuff:
                      Dynasty 350DX Tigrunner
                      Dynasty 200DX
                      Millermatic 350P w/25ft Alumapro & 30A
                      Millermatic 200

                      TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

                      Comment


                      • #12
                        Thanks Ja for the correction.
                        .
                        Miller Bobcat 225NT onan
                        Millermatic 211
                        Spoolmate 100
                        (Retapped to fit regular mig tips)
                        Work better & less parts to stock.
                        Miller 130xp
                        T/A Dragster 85 (portability 11 pounds)
                        Oxygen/Acetylene torch set 50'
                        2. 4-1/2" grinders
                        1. 9" grinder
                        14" Makita chop saw
                        1/2" Aircat impact gun 900#

                        Comment


                        • #13
                          Originally posted by H80N View Post
                          Just Curious...

                          is

                          "Baktc" for "Back to Sea"......
                          yes it is! lol

                          Comment


                          • #14
                            Originally posted by Baktc88 View Post
                            yes it is! lol
                            COOL,,,,,
                            .

                            *******************************************
                            The more you know, The better you know, How little you know

                            “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                            Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                            My Blue Stuff:
                            Dynasty 350DX Tigrunner
                            Dynasty 200DX
                            Millermatic 350P w/25ft Alumapro & 30A
                            Millermatic 200

                            TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

                            Comment

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