This manual is intended for the training of specialists in materials science , , , , [ [ Selection of materials and technologies for their processing , [CM forming a structure and a complex of properties in details and products , applicable to the relevant engineering and metallurgical specialties . [DT Metallurgical bases of the choice of structural steels and toughening heat treatment are set out, the principles that should be followed when choosing metal alloys for various purposes, technologies of their thermal and chemical-thermal treatment. are formulated, and the principles that should be followed in the selection of metal alloys for various purposes are set out in the Metallurgical Basics ... The order of actions of the material scientist when choosing materials for specific products of mechanical engineering is considered. The recommendations available in the literature are generalized, based on the practice of using materials in modern mechanical engineering. The textbook is based on the course of lectures given by the authors on the academic disciplines of these specialties . The first volume includes materials related to the choice of steels and cast irons, in the second - alloys of non-ferrous metals. Sets of tasks for the selection of metal alloys and hardening technologies for typical parts of mechanical engineering are presented . The computer program of automated selection of materials and technologies in mechanical engineering and the methodology of practical use of this program is presented. The training manual is intended for students of engineering and metallurgical specialties, can be useful for engineering and technical workers of enterprises and research institutes .