Compared with traditional metal materials, MMC has higher specific strength, specific stiffness and wear resistance; compared with resin-based composite materials, MMC has excellent electrical and thermal conductivity, good high-temperature performance, and can be welded; compared with ceramic-based composite materials Compared with other materials, MMC has the characteristics of high toughness, high impact performance, and small linear expansion coefficient. Practical MMC should exhibit low density and mechanical properties comparable to current engineering materials.

Composite materials refer to materials with new properties composed of two or more materials with different properties through physical or chemical methods at the macro (micro) level. Various materials complement each other in terms of performance, creating a synergistic effect, making the overall performance of composite materials better than the original component materials and meeting various different requirements. The upstream of the composite products industry is mainly glass fiber, resin and other industries, while the downstream is mainly wind power, automobile, engineering machinery, yacht and other industries. At present, the global composite materials market value and output have increased steadily in recent years.

Aerospace manufacturing is the most concentrated area of high technology in manufacturing and belongs to advanced manufacturing technology. The F119 engine developed by the United States Hewlett-Packard Company, the F120 engine of the General Electric Company, the M88-2 engine of the French SNECMA Company, and the EJ200 engine jointly developed by the United Kingdom, Germany, Italy and Spain.