Depends on how long the fire outside the safe burns . Safes are rated at 1 hour, 2 hours, and 3 hours resistance to fire.

I've used a hot air gun to flatten warped chips. It's the type used to shrink plastic tubing on cabling in electronics. I have the chip on a piece of tile and aim the air stream at it. I pick it up every few seconds and drop it on the tile. The sound it makes changes from a "clink" to a "clunk" as it softens enough to flatten. At that point, I hold it down on the tile with something flat, like a book.

When it clunks, it's still hot enough to handle but would be uncomfortable if held for more than a couple of seconds. I'd guess it starts to soften somewhere in the 150-200 degrees F range.

Here's a clip from a safe maker discussing fire ratings for safes:

1. What does it mean when it says "media" safe?

When the term media is used in describing a fireproof safe or cabinet it is referring to the material that is stored inside. Media is anything from computer disks to microfilm. Anything in this category needs to carry the UL 125 fireproof rating to be protected.

Examples of media included in this category are DDS-4 Tapes, DLT, LTO, LTO-2, AIT, AIT-3, SDLT, Ultrium 1,2,3 tapes, cartridges, CD's, microfiche, microfilm, photos, Open reel tapes, ZIP disks, JAZZ drives and discs, VXA, TK50, CD-R's, 8mm, 4mm, and Mammoth - YOU WILL REQUIRE the UL 125 fire safe rating to store the above items. This will ensure the inside temperature of the cabinet or safe will not exceed 125 degress F - keeping your data and media safe.