Abstract. The car industry uses a tremendous number of materials to build cars, including iron, aluminum, steel, glass, rubber, petroleum products, copper, steel and others. These materials have evolved greatly over the decades, becoming more sophisticated, better built, and safer. They've changed as new automotive manufacturing technologies have emerged over the years, and they're used in increasingly innovative ways. This article is devoted to systematization information on the introduction and application of modern materials in the automotive industry.Given both domestic and foreign sources of information, it follows that car manufacturers are constantly pushing to create the lightest cars possible to increase speed and power. Research and development into lightweight materials is essential for lowering their cost, increasing their ability to be recycled, enabling their integration into vehicles, and maximizing their fuel economy benefits. Light weighting without loss of strength and speed properties is the present, and the future, of the automotive manufacturing industry. It brings innovative materials to the frontline of design.

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In this work it is experimentally investigated a size effect in temperature coefficient of resistance (ТCR) of Ni films with Cu and SiO 2 thin overlayer. The parameters of electrical transfer (the mean-free path of electron, the reflectivity coefficient of the external surfaces, the reflection and transmission coefficients at the grain boundary) were calculations. Decreasing of the value of the reflectivity coefficient is due to the change of the surface microrelief. It is show that the value of TCR decreases caused by the conditions of scattering changes on internal and external boundaries.

Supramolecular structure and performance properties of activated matrix polytetrafluoroethylene, modified fiber filler and composites based on its are investigated. Shown that the energy influence contributes to transfer of the polytetrafluoroethylene matrix structure in nanoscale state. The technology of sequential mechanical activation of the ingredients composition before their mixing by the energy influence is developed. Nanostructured matrix, fragments of carbon fibers and their interface in the formed composite determine the unique physical, mechanical and operational characteristics of composite materials. As a result of research the material of new generation with maximum physical and mechanical and tribotechnical properties is developed.

From the great variety of methods to improve the efficiency of cutting tools, it is necessary to highlight the methods of applying wear-resistant coatings, which in recent years are increasingly used. Applying wear-resistant coatings on the cutting tool can significantly increase its efficiency and intensify machining modes. Mechanisms of strengthening the wear-resistant coating for materials have been analyzed under the impact of technological parameters of coating condensation process on its structure parameters and mechanical properties, formation of single and multi-element coatings based on titanium nitrides, aluminum, and silicon, the transformation of coating properties by obtaining complex coatings, and principles formation of complex coatings designed for different cutting tools. The influence of the coating on the mechanical properties of high-speed steel is shown. In the magnetron sputtering coatings on P6M5 steel samples, the microhardness of the coatings is TiN – 20–24 GPa, AlN – up to 16 GPa, TiAlN – up to 35 GPa, AlTiN – up to 32 GPa, TiAlSiN – 32–37 GPa, including while the microhardness of the substrate of steel P6M5 – 6–9 GPa. The microhardness of TiAlN and TiAlSiN coatings applied on an instrumental basis is 1,5 – 1,9 times higher than the microhardness of TiN, AlN coatings. It was found that the wear intensity of P6M5 steel without coating is 6 times higher than with AlTiN, TiAlN, and TiAlSiN coating, 3 times higher than with TiN and AlN coating. The coated tool is characterized by increased reliability and higher stability and allows the processing process with higher cutting modes.