General observation.... 75% aluminum body

  1. RichD

    RichD Well-Known Member

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    Am I the only one that didn’t realize that the skin of the JL is 75% aluminum? I knew the doors and hood were, but was surprised that the front fenders, cowl, window frame, and A pillar are also aluminum. (killing some time, playing around with a magnet in the garage). The rear tub, B & C pillars and a portion of the rocker is steel.
     
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  2. MrMischief

    MrMischief Well-Known Member

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    Within the first week or two of owning my JL I had about 4 different people tell me I should buy some of that magnetic armor to help protect the paint on the trails. All four of these guys I'd consider "Jeep People" and one had actually owned his JLU for about a year at that point. So no, I would say you're certainly not alone.
     
  3. chacomaya

    chacomaya Well-Known Member

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    I did not know all of those things were Al. Thanks for pointing that out. Also, I believe the tailgate is magnesium, or at least parts of it are.
     
  4. mwilk012

    mwilk012 Well-Known Member

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    The body of the tailgate is cast magnesium, with an aluminum skin.
     
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  5. javelina

    javelina Well-Known Member

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    I think our Jeeps are aluminum alloy...

    Beer cans are aluminum.

    Aircraft fuselages are made with aluminum alloy. Big diff, and super strong for their weight/strength ratio.

    I'm sure a resident metallurgist will step in and correct.
     
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  6. mwilk012

    mwilk012 Well-Known Member

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    Beer cans are about .004” thick aluminum. Pure aluminum is very strong, if it’s thick enough. Even 1/16 of an inch is significantly thicker than a beer can.

    http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MA7075T6

    Aircraft aluminum is mildly alloyed, but it’s still considered aluminum.
     
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  7. javelina

    javelina Well-Known Member

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    Hola, understood. I'm not speaking about thickness. Heck, we could have a 1" thick AL sheet.... When people hear AL, they think in terms of beer cans. I've worked in Aerospace, AL-alloy is awesome.

    I'm just trying to clarify. That our Jeeps are made of AL-Alloy, and not straight AL. There is a diff. If you have further info clarifying, please do share. Honest, I'm looking forward to learning more.

    gracias!
    -Jav
     
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  8. mwilk012

    mwilk012 Well-Known Member

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    Yea all I know is what FCA has put out in press releases, they always just call it aluminum. I’m sure it’s an alloy of some sort, practically everything is.
     
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  9. chacomaya

    chacomaya Well-Known Member

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    Festivus poles are made from aluminium. That's good enough for me. ;-)
     
  10. ToolMan514

    ToolMan514 Well-Known Member

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    The cowl piece is actually plastic. Some of the colours (like my Sting-Gray) show a slightly different shade on this piece. It doesn't bother me, I have decals there.

    The amount of non-steel panels means we have limited options for temporarily mounting a CB or ham antenna. The only flat magnetic place is the bolts on the hood hinges.
     
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  11. Rahneld

    Rahneld Well-Known Member

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    I heard the motivation for this was to keep vehicle weight as low as possible without sacrificing other things. Perhaps that, the fuel savings it accrues, and the ability to better make the doors mobile played into the mix. : - )
     
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    OP
    RichD

    RichD Well-Known Member

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    I'm fine the heavy use of aluminum and plastics. I agree that from an engineering standpoint it makes sense. Heck, Teslas are all aluminum. I was just surprised, haven't seen much talk about it.
     
  13. ozzysjeep

    ozzysjeep Active Member

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    It's Festivus for the rest of us. Now we share our grievances with each other! I'll start, get a job.
     
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  14. D60

    D60 Well-Known Member

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    I just assumed everyone knew. I too took a magnet to the body around the second day of ownership....day 1 was yanking the horrid Rubi sticker off the hood ;)

    It would seem I schedule large projects per day, eh? ;)
     
  15. mwilk012

    mwilk012 Well-Known Member

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    To be honest, I’d never heard of magnetic trail armor before this thread.

    The aluminum body of the JL was one of the big marketing points before release.
     
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