This sound is from Iron Man Soundboard

Tony Stark was portrayed by Robert Downey Jr. in the films Iron Man, The Incredible Hulk, The Avengers and The Avengers. The character has been a founding member of the superhero team the Avengers. He has been featured in several incarnations of his own comic book series.
See also: Iron Man (2008 film), Iron Man 2, Iron Man 3, Tetsuo: The Iron Man, Iron Man (TV series), Iron Man's armor,