Simbit can be purchased at simbit.com. This is a tile-based design but is not based upon CryptoSteel like all the others I’ve tested. Its web site states that “Simbit’s materials are rated to survive prolonged exposure to temperatures of up to 1700°F / 925°C. That’s 600°F hotter than a typical house fire. Simbit is constructed entirely in 316 marine grade stainless steel alloy, providing superior corrosion resistance to more common stainless steels.”
The tiles were nicely organized on a single metal sheet that you pried them off off, but they are so tiny it’s really annoying to actually work with them. Simbit provides an “assembly tool” which is a small sliver of metal that you’re supposed to attach putty on the end to get the tiles to stick onto, but I found this so annoying to deal with that I just resorted to my fingers and a tiny screwdriver to guide the tiles along the rails.
Heat Stress Test
No data loss.
Corrosion Stress Test
Surprisingly survive the corrosion test, which few tile-based devices do — hard to read but still legible.
Crush Stress Test
Surprisingly, no data loss! This was the only tile-based device to survive all of the stress tests. I suspect that this is due to how thin the tiles are and how tightly they fit in the rails — as such, when there was expansion / contraction / movement of the metal, all of the pieces remained together.