Superman's Cod Piece Was Made of Steel

Earlier, I posted that Superman got the name "Man of Steel" due to the fact that in the early TV shows he wore a steel suit underneath his exterior underwear to make him look muscular. Well, I found this information out by listening to a trailer for Studio 360, an NPR show. I finally got around to listening to the whole piece and I found out that his "cod piece" was made of steel. The actress that played Lois Lane would "ping on it" and the actor would get upset.