Don't you dare. The metal would have had to have gotten cherry red for the heat treat to be substantially changed. If the springs in the gun have any spring at all left in them then it didn't get too hot. Like previously suggested, most all the springs will have to be replaced, though.
I'd clean and inspect the bore first, and if it looks good, then everything else will probably be ok too.
Example: Customer walks in my shop with a Browning Hi-Power that had been through a fire. Grips were somewhat crispy and there was an even brown patina of rust on the entire gun. We got the grips off, scrubbed a little with a "Big 45 Frontier" metal cleaner, and it turned out that the rust had not eaten through the blueing yet, and it cleaned up and looked almost as good as new, when new grips were installed.