Stalin loved to be seen as a man of infinite power. He wanted to show the world that he was capable of doing extraordinary thins with his country. Steel, in a way, describes Stalin as a person also. When you see the finished product it is a thing of beauty. However if you look to its beginning, steel is a combination of molten metal and fire. Stalin also has a very fiery and evil inside. He killed millions of people for no other reason than fear and cheated his way to the top through seduction and violence.
Stalin literally means man of steel and was chosen by Stalin to enhance his image.