Magnesium Board

Discussion in 'Materials' started by Doc FJ, Apr 22, 2020.

  1. Doc FJ
    Joined: Apr 2020
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    Location: Nebraska

    Doc FJ New Member

    Anyone have any experience or information about marine applications for Magnesium Board (MGO Board)? Came across it while researching engine room sound and fireproofing, and it sure holds promise:
    1. Fireproof
    2. Waterproof
    3. Cuts with standard tools
    4. Comes in standard plywood sizes
    It would be interesting to build a test-hull out of it. Can't find anyone using it on boats, but maybe my google search skills are failing me. Here's a link to basic specs: http://magnumbp.com/Files/PDF/Short-Form-Specification-071515-1345.pdf
     
  2. gonzo
    Joined: Aug 2002
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    gonzo Senior Member

    It is basically a high end drywall.
     
  3. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    I wonder what the fibrous reinforcement is, obviously not asbestos.
     
  4. gonzo
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    Location: Milwaukee, WI

    gonzo Senior Member

    Fiberglass
     
  5. kapnD
    Joined: Jan 2003
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    Location: hawaii, usa

    kapnD Senior Member

    I wonder if it has enough structural value to use as a hull sheeting or coring in thin sheets?
    It might be a great material to use as a sacrificial forming material for stringers and like, as it won’t rot, mold or mildew, and is not affected by water.
    Definitely a step up from a drywall boat!
     
  6. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    Drywall, as you folk call it, (known as Gyprock or plasterboard out here), is a four letter word that starts with ess, and ends with tee. Any exposure to water, it is wrecked. This Magboard presumably doesn't dissolve at the sight of water, and I suspect is what is used in bathrooms. But it would have limited use in boats.
     
  7. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    It is used in wet locations like shower stalls as a backer for tile.
     

  8. Doc FJ
    Joined: Apr 2020
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    Location: Nebraska

    Doc FJ New Member

    I found a few issues: the magnesium is mainly mined in China, with restricted exports, so no US manufacturers; and quality can vary from factory to factory. One building in Denmark had millions in damage due to water absorption: Dokk1 - Wikipedia https://en.m.wikipedia.org/wiki/Dokk1#Wind_Panel_Scandal

    Well, I guess another "miracle" material that is lacking anything miraculous.
     
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