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In modern times, high-end composite materials have been used in the civil airliners that everyone takes to ensure excellent flight performance and sufficient safety. But looking back at the entire history of aviation development, what materials were used in the original aircraft? From the point of view of meeting the factors of long-term flight and sufficient load, the material used to manufacture the aircraft must be light and strong. At the same time, it must be convenient for people to transform and process, and meet many requirements such as high temperature resistance and corrosion resistance. It seems that choosing the right aviation materials is not an easy task.

With the continuous development of aviation materials science, people began to use more and more composite materials, using two or more composite materials, combining the advantages of different materials, but also offsetting their respective disadvantages. Unlike traditional alloys, the composite materials used in aircraft in recent years have mostly used a lighter resin matrix mixed with carbon fiber or glass fiber components. Compared with alloys, they are more convenient for transformation and processing, and the strength of different parts can be determined according to the design drawings. Another advantage is that they are cheaper than metals. The Boeing 787 passenger aircraft, which has been highly acclaimed in the international civil aviation market, uses composite materials on a large scale. 
There is no doubt that composite materials are the key research direction in the field of aeronautical materials science in the future. The combination of several materials will create a result of one plus one greater than two. Compared with traditional materials, it has more possibilities. Future passenger planes, as well as more sophisticated missiles, rockets, and spacecraft and other space vehicles, all have higher requirements for the adaptability and innovation of materials. At that time, only composite materials could do the job. However, traditional materials will certainly not withdraw from the stage of history so quickly, they also have advantages that composite materials do not. Even if 50% of the current passenger aircraft is made of composite materials, the remaining part still needs traditional materials.