K1-MET is the COMET competence centre for metallurgical and environmental process development. The focus of K1-MET is on resource-efficient production of metallic materials with an emphasis on low-CO2 steel production technologies, process analysis and modelling, as well as on the energetic integration of heat and production processes. The methods used are based on close cooperation between industry and science with a mixture of basic research, modelling, laboratory experiments and operational trials that are ultimately implemented industrially.