'Concept of Materials Science' refers to the field of a subject area that investigates the relationship between a material's composition and structure and its resulting qualities. Since the wide range of material characteristics cannot be grasped from the perspective of a single classical science, this field arose out of a synthesis of solid-state physics, metallurgy, and chemistry. Materials may be chosen or created for a vast array of purposes, from structural steel to computer microchips, with only a rudimentary grasp of the sources of qualities. Therefore, materials science is crucial to engineering endeavours including nuclear power, energy conversion, information processing, electronics, aerospace, telecommunications, and electronics. As this book, the understanding role that a material's processing history has in shaping its structure and, by extension, its qualities and performance is a fundamental focus for materials scientists. The materials paradigm is a way of understanding the connections between different types of processing, structural elements, and final product qualities. Nanotechnology, biomaterials, and metalwork- king are just a few of the fields where this framework has been applied to further our knowledge. This book covers major topics to understand the concept of material science such as the structure and bonding of atomic and crystal, imperfections in solids, and plastic deformation in crystalline materials. Further, understand the mechanical properties and diffusion of the metals in various aspects.