Creep and tensile tests on refractory metals at extremely high temperatures

The need for mechanical properties at elevated temperatures is high for finite element modelling, process optimization, research and development or quality assurance purposes. Obtaining of this data is difficult, for refractory materials such as molybdenum or tungsten reliable data including precise strain measurement is required up to 2500 °C.Over the last years a cooperation between PLANSEE and the University of Applied Sciences, Jena, Germany was built up. Within the internal research program “Basisdaten” (basic materials data) creep data and mechanical properties of molybdenum, tungsten and their alloys at very high temperatures could be achieved.After a description of the unique test equipment at the University of Applied Sciences, Jena, the results of creep and tensile tests on molybdenum and tungsten sheet material are presented.