Medical cannulas have proven their importance in everyday medical practice with the outbreak of the Covid-19 pandemic. This disposable medical product is increasingly used for vaccinating, injecting liquid medicines or drawing blood and must not cause any reaction when exposed to human tissue or body fluids. Therefore, cannulas are subject to several standards and regulations. The aim of this work was to investigate the material of different cannulas in addition to examining the regulations. By means of scanning electron microscopy, energy dispersive X-ray spectroscopy as well as light microscopy and small load hardness testing, the material of five different cannulas was examined and then compared with the literature. Using the steel key, the high-alloy austenitic steel 1.407 or X2CrNi18-9 could be identified. This austenitic steel, often used for medical products, with its alloying elements chromium and nickel fulfils the specifications of the standard to be a non-rusting steel. Furthermore, the corrosion resistance test was carried out according to ÖNORM EN ISO 9626. All the cannulas examined also fulfilled the requirements of this test.