article_snippet.sent: However, Dr Raychelle Burks continued that it is later made of a nickel-titanium alloy called nitinol.
article_snippet.sent: It looked at the composition of Iron Man's suit - said to be a gold-titanium alloy in one of the movies - and Captain America's shield.
article_snippet.sent: There may also be some graphite reinforced with carbon fibre, which can take a lot of heat - useful if Iron Man doesn’t want to singe Iron Man feet using those rocket boots.
article_snippet.sent: In Iron Man 2 this uses palladium - but we soon learn this is poisoning and killing the character.