Reminder chat that [fire safes](https://en.wikipedia.org/wiki/Safe#Fire-resistant_safes) are generally rated for how slow the thermal equalization between its outside and the insides takes, when exposed continuously to a heat source at a given specific temperature.
(The cheap affordable safe at the store very much can't do it well, and the expensive one probably isn't enough.)
Flash storage and harddrives can be damaged by *much* lower temperatures than paper (which autoignites at [451℉](https://en.wikipedia.org/wiki/Fahrenheit_451)/223℃ in some formulations) and the rating standards do not actively represent or acknowledge this (I fully expect all electronics to be dead at 100℃ if not actively igniting).
The embers of an "extinguished" house fire can stay very hot for a long time and you may not be able to dig out the safe from the wreckage for several hours after the fire has been extinguished.
The likelihood of your electronic storage being unharmed may be quite low.
LisPi
npub132…qgzqx
2026-10-20 03:28:11 UTC
Author Public Key
npub1326y4p8mw4l750yc8e52n0xguvcl5j0dn88ul5r2gjva2sh2ay7qjqgzqxPublished at
2026-10-20 03:28:11 UTCEvent JSON
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"content": "Reminder chat that [fire safes](https://en.wikipedia.org/wiki/Safe#Fire-resistant_safes) are generally rated for how slow the thermal equalization between its outside and the insides takes, when exposed continuously to a heat source at a given specific temperature.\r\n\r\n(The cheap affordable safe at the store very much can't do it well, and the expensive one probably isn't enough.)\r\n\r\nFlash storage and harddrives can be damaged by *much* lower temperatures than paper (which autoignites at [451℉](https://en.wikipedia.org/wiki/Fahrenheit_451)/223℃ in some formulations) and the rating standards do not actively represent or acknowledge this (I fully expect all electronics to be dead at 100℃ if not actively igniting).\r\n\r\nThe embers of an \"extinguished\" house fire can stay very hot for a long time and you may not be able to dig out the safe from the wreckage for several hours after the fire has been extinguished.\r\n\r\nThe likelihood of your electronic storage being unharmed may be quite low.",
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