Characterization of the mechanical behaviour of metals is key to predicting the performance of real-life components and structures, supporting the development of new materials, and optimizing processing steps in the manufacturing industry. However, conventional material testing practices require a large number of bulky specimens to fully identify the constitutive response of metals in terms of plasticity, damage, and failure. As a result, characterization potential is severely restricted when a limited quantity of bulk material is available, or when mechanical properties need to be probed at a very local scale. The proposed project aims to address this by substantially expanding the possibilities of material testing using miniaturized specimens. Based on the synergy between data-rich specimen designs, full-field measurement techniques, and inverse identification procedures, the study promises to drastically reduce material quantities required for full characterization – both in terms of specimen size and number of tests. Through a numerically and experimentally driven test campaign on four representative alloys, covering both quasi-static and high strain rates, the proposed study will generate fundamental insight into specimen scale effects, while developing novel testing methodologies. Throughout, strong ties with different societal and industrial actors will ensure maximum applicability of the research along the entire value chain.