Magnesium Board

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

 

It is basically a high end drywall.

 

I wonder what the fibrous reinforcement is, obviously not asbestos.

 

Fiberglass

 

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!

 

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.

 

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

 

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.