Classification of materials in machinery industry
Machinery industry materials are divided into two categories of metal materials and non-metallic materials, metal materials are divided into ferrous and non-ferrous metals; non-metallic materials can be divided into two categories of inorganic materials and organic materials. In mechanical engineering, there are many varieties which are more frequently used.
Belonging to inorganic materials are refractory, ceramics, abrasives, carbon and graphite materials, asbestos and other organic materials; it is wood, leather, adhesive and synthetic polymer materials, synthetic rubber, synthetic resin, synthetic fiber etc.; the reinforced composite material composed of resin matrix with non metallic fiber.