The present collection of papers from 12th International Conference „Local Mechanical Properties“ which was held on November 04.- 06.2015 in Liberec, Czech Republic presents current publications of conference participants from several countries . Besides the traditional research in area of mechanical properties of different metallic materials, composites, polymers was focused attention also on research of thin layers and nanomaterials. The significant potential of application of these new materials significantly affects on research activities of academia. Future application of innovative materials in different areas of human activities, already requires from researchers the definition of materials properties on atomic level. Conference by its content contributed to the deepening of knowledge about the internal structure of various materials, their mechanical and tribological properties.