The conference topics cover lightweight materials such as Aluminum, Magnesium and Titanium, their processing as well as their specific technology and property features, which are involved in their use in modern transport systems and structural lightweight applications. LightMAT 2017 gives a deep insight into the basics, the specific requirements, how they can be met by each of the three modern light-weight materials, individually or in their combination in advanced multi-material design, including processing, joining and corrosion issues. Additionally, specific enabling technologies such as additive manufacturing will be highlighted. Plenary, Lectures and Poster presentations cover the following topics: A - Processing B - Applications C - Alloy Development D - Hybrid Materials and Multi-material designs E - Characterization and testing F - Computational materials design G - Sustainability AM - Special Topic - Additive Manufacturing ECAA - Special Symposium on Aluminium and Aluminium Alloys Additive manufacturing - the industrial version of 3-D printing - is already used to make some items, such as medical implants, and to produce plastic prototypes for engineers and designers. The special topic shall give an overview of advances on 3-D printing of extremely sophisticated applications made of light alloys. Furthermore, the session shall figure out both the current and the future challenges and opportunities of this promising technology on its way out of today’s niche market.