The chair of metallurgy of iron and steel of the Institute of Iron and Steel Engineering plans the Aachen steel Colloquium, which will be held on June 35, 2008. Times brings together science and studies from the RWTH Aachen and the economy of the steel industry. The current challenges are numerous, the developments varied, sometimes apparently contradictory. Raw material supply, climate change and the switch-over to renewable energy sources are moving us as well as the promotion of young employees by the incoming steel engineers. In order to be future-oriented in these areas, the symposium will take place this year under the motto "Metallurgy for sustainable steel".