Aluminum...
Atomic Number: 13 Atomic Radius: 143.1 pm
Atomic Symbol: Al Melting Point: 1220.576°F
Atomic Weight: 26.98154 Boiling Point: 4566.2ºF
Electron Configuration: [Ne]3s23p1 Oxidation States: 3
I don't think the fire could of gotten that hot, umm, but the fire dosn't need to be that hot to cause the temp of it to rise to that degree...