See all the Iron Man Suits.
Origin & Use
The Mark 6 go back to the usual Red/Gold color scheme. Tony built this armor after fixing his palladium poisoning problem by creating a new ARC Reactor powered by a new element : Vibranium. When Tony created this new reactor, he adopted a triangle design that is reflected on the Mark 6. This is the only Iron Man suit with a triangle chest design.
This suit also includes silver parts on the arms and knees.
There are no equivalent of this armor in the comics.
Here are all the costumes related to Mark 6.
Helmet by Rubie’s costumes
Helmet by Disguise Costumes