The journey of aerospace equipment into space relies heavily on the strong support of high-end materials behind it. From the high temperature and pressure during rocket launch to the space radiation when satellites are in orbit, these materials are not only the "bones and muscles" of the equipment but also the "armor" against extreme environments, and even the key for commercial aerospace to break the limits of cost and performance.
    Currently, commercial rocket bodies mainly adopt aluminum alloy materials, accounting for more than 70% of the rocket's weight. The 2-series and 7-series aluminum alloys produced by Nanshan Aluminum have passed aviation certifications from multiple countries and are widely used in domestic large aircraft and rockets. Some small rockets choose carbon fiber composite materials, achieving a weight reduction effect of 15%. The key components of engines depend on nickel-based superalloys, which can remain stable at temperatures above 1500 degrees Celsius. Their single-crystal turbine blades are manufactured through more than ten precision processes and are as valuable as gold.
    Satellite materials are also refined to the utmost. The shell uses magnesium alloy or carbon fiber composite materials to achieve lightweight and shock absorption requirements, and China's Beidou navigation satellites have adopted carbon fiber structures. Radiation-resistant materials such as boron-containing aluminum alloys and tungsten alloy shields effectively protect against space radiation, while solar panels use gallium arsenide cells with a photoelectric conversion efficiency of over 30%. In the field of thermal protection, ablative phenolic resin-based composite materials achieve heat insulation through "self-sacrifice". The modified material used in LandSpace's Zhuque-3 can withstand temperatures of 2100 degrees Celsius and be reused multiple times.
    Domestic materials have achieved multiple breakthroughs. The aluminum alloy thick plates from Nanshan Aluminum have filled domestic gaps, and Huayang Group mass-produces T1000-grade carbon fiber, breaking the monopoly of the United States and Japan. The recycling and reuse of materials have also become crucial for cost reduction. Aluminum alloy has low recycling cost and small performance loss, and the recycling technology of carbon fiber composite materials is gradually maturing.
    The innovation and application of these high-end materials not only ensure the safety and reliability of aerospace missions but also promote the high-quality development of the entire industry.


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