This is the third out of five training webinars organized in the ToughSteel project. In this webinar, you will learn how fracture toughness measurements can help you in your day-to-day problems related to the edge formability of high-strength metal sheets. Different aspects of the experimental evaluation of fracture toughness in thin metal sheets will be addressed, and examples of industrial application cases will be shown. Furthermore, a new fracture mechanics-based damage evolution model to improve edge-cracking prediction in forming simulations will be presented.