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What thickness or gauge is standard automotive sheetmetal

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  • What thickness or gauge is standard automotive sheetmetal

    What thickness or gauge is standard automotive sheetmetal on American vehicles, such as a door skin or fender skin. I'm practicing up on my Mig and am trying to determine settings, using ER70-6S and C25. The tables in my texts and on the machine reference gauge. Thanks for any info.

  • #2
    age ??

    it depends on the age mostly and some on the type.

    the newer cars will go 20 to 22 gage you might find it a bit thicker in a truck and my old 51 GMC 3/4ton is 16-18. seems like 14 gage

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    • #3
      Be aware that this metal will not likely be ordinary mild steel.

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      • #4
        The vehicle I'm planning to work on is a 1997 Jeep Grand Cherokee. I'm trying to do the work myself or myself with a few friends as a learning experience and to try to save some $. It's not my primary vehicle, so I'll take my time and see what happens. I am going to practice my welding on some scrap before I weld on the vehicle. I also bought a new Oxy/Acetylene kit today.

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        • #5
          Originally posted by INTP
          Be aware that this metal will not likely be ordinary mild steel.
          What would it be most likely?

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          • #6
            Originally posted by dcsound
            What would it be most likely?
            carbon steel, or a similar alloy. In the case of many gm vehicles it is also zinc washed

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            • #7
              Then maybe I should be using a different mig wire and gas combination?

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              • #8
                DC, for patch panels at the college autobody we use 18 ga. mostly but at times will use discarded hoods/fenders for patches, for your Jeep I'd use 18 ga. and we use .023 and C25 for all. Remember to clean w/wax and grease remover before ya start or grinding at the patch area has a possibility of contaminating w/silicons, and your paint will not like it.
                Good luck
                L*S

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