Guess we can trade pics all day of consumed and melted alum.
And I do have personal experience with aluminum Semi catastrophic fires.
"The propellant mixture in each SRB motor consists of an ammonium perchlorate (oxidizer, 69.6 percent by weight),
aluminum (fuel, 16 percent), iron oxide (a catalyst, 0.4 percent), a polymer (a binder that holds the mixture together, 12.04 percent), and an epoxy curing agent (1.96 percent)."
https://space-shuttle.com/srb.htm#:~...6%20percent%29.