This research is concerned in showing the importance of material selection in production design stage, the factors that involved the material selection strategies and its criteria and the modern approach of materials selection since there are many techniques of material selection. The proposal work helps in choosing the following appropriate techniques from many quantitative ones. The following techniques (Geometrical approach, Algebraic Approach), were included in the work the developed system solves the selection techniques and introduce the best material from a database contains the steel family. The case study was examined from the real world of manufacturing and satisfactory results were obtained. The developed algorithm is being to build Material Selection Techniques system called MASTECH which incorporates making decisionon materials selection. In the research, MASTECH system has been developed to aid both designers and manufacturing engineers in choosing the most suitable material