In the 2008 movie, Iron Man's suit is an alloy of gold & this metal
- Quora [PAR] Apr 29, 2015 ... Iron is very dense and heavy, it rusts and isn't nearly as hard as some of its own 
... Iron as a viable metal was discarded in the comics less than a year after the ... 
Iron Man 3 (2013 movie): If Tony's suits are a cocoon, is the butterfly Ultron?