This brand VALE is Ranked 2 in the series. Here is the list of the top 10 Iron and Steel Companies in the world 2016. The Iron and Steel industry has grown over the decades to be largest sectors and businesses in the world. The top iron steel companies are Arcelor Mittal, VALE, Nippon Steel Sumitomo Metal, POSCO JFE Steel along with brands like Baosteel, TATA Steel, Steel, .