The molten aluminum being poured out onto the thin black fabric is bubbling at a scorching 1500 degrees Fahrenheit.
The fabric doesn’t catch fire, it doesn’t get burned through and there’s not a single hole in it.
Explains National Geographic’s “The Showdown of the Unbeatables”:
“CarbonX is an acrylic fiber that is partially charred in an incinerator, a carbon sheath forms around an unburned acrylic core. When this charred fiber is exposed to heat, the acrylic core burns completely, absorbing the heat energy of the flame.”