Re: Is Magnesium ok?
 

Alloys of various metals can have hugely differing properties in certain areas. throwing blanket statements about classes of materials isn't always appropriate. Please see the link below for some testing performed by the FAA in related to this very topic of conversation.

https://www.fire.tc.faa.gov/pdf/AR11-13.pdf

Knowing how badly it can go if not handled properly, I highly caution inexperienced users form considering magnesium in FIRST. That said, from experience, I can say that there is at least one Magnesium alloy that can withstand some impressively high temperatures after being machined into fine chips without burning

Re: Is Magnesium ok?
 

The alloy from my previous post is AZ91D

Re: Is Magnesium ok?
 

The supply system that I worked inside of had enough Halon to last for quite a long time, so acquisition was never a problem.

Also of note are some of the AFFF agents used in fighting large (and very hot) fires, but these are utterly impractical and too expensive for an FRC team.

The principle of operation is the same: Remove the access to oxygen as rapidly and thoroughly as possible.

USMC.