SKYWALKER, EXPLOSION - CRASHED METAL SQUEAKING ACCENT

This's a Skywalker Sound sound effect. It's a series of metal crashing with various loud squeaks and screeches that is usually heard during an explosion.

TV Series

 * Star Wars: Clone Wars (Heard once in CHAPTER 25)
 * Star Wars: Rebels (Used often to help accent explosions)

Movies

 * Lorelei: The Witch of the Pacific Ocean (2005) (briefly/low volume)
 * The Terminator (1984) (Audio Restoration and Re-mixing) (Heard during the truck's big explosion)
 * Titan A.E. (2000) (Heard when the Drej's station is vaporized)

Audio Samples
The scene near the end of Titan A.E. is the best source for reference.