This lecture offers an example of product development. It imparts knowledge about the design possibilities inherent in aluminium sections and the choice of alloy. It gives insight into how to develop a product using the general specifications and the interaction between form, material and processing chain; the importance of being thoroughly familiar with the different design materials, their processing possibilities and properties. The lecture is recommended for those situations, where a brief, general background information about aluminium is needed as an introduction of other subject areas of aluminium application technologies. This lecture is part of the self-contained course "Aluminium in Product Development", which is treated under TALAT lectures 2101 and 2102.