In the aerospace industry, commonly used materials include metals such as aluminum alloys, stainless steel, titanium alloys, and high-temperature alloys, as well as plastics such as polyimides, polyamides, polytetrafluoroethylene (PTFE), and polycarbonates. These materials are chosen for their specific properties such as high strength-to-weight ratio, corrosion resistance, high-temperature stability, electrical insulation, and durability. They are utilized in the manufacturing of aircraft structures, engine components, spacecraft outer shells, insulation parts, electronic components, seals, and transparent panels, among others.