Plain bearings; multilayer materials for thin-walled plain bearings

This technical specification defines the requirements for multilayer metallic materials specifically designed for thin-walled sliding bearings. These materials typically consist of a backing steel layer bonded to intermediate and lining layers, often incorporating copper, tin, or other alloys to ensure optimal performance under varying operational conditions. The document outlines essential criteria regarding chemical composition, mechanical properties, and metallurgical structure necessary to guarantee the reliability and durability of such bearing components. It covers key aspects such as bond strength between layers, hardness distributions, and dimensional tolerances that are critical for successful manufacturing and assembly processes. Additionally, it addresses the material's suitability for high-load and high-speed applications where consistent friction control and wear resistance are paramount. The content focuses strictly on the physical and chemical characteristics of the materials themselves, providing a framework for quality assurance during production and inspection without detailing specific application scenarios or testing methodologies beyond general material validation.