Forty years ago, aluminum dominated the aerospace industry. the new kid on the block, it had been considered to be lightweight, inexpensive, and state-of-the-art. In fact, the maximum amount as 70% of an aircraft was once made from aluminum. Then other new materials like composites and alloys were also used, including titanium, graphite, and fiberglass, but only in very small quantities – 3% here and seven there. It is available as, aluminum was used everywhere from the fuselage to main engine components.
Aerospace manufacturing is exclusive among other volume manufacturing sectors, and this is often very true of aerospace engine manufacturing. The engine is that the most complex element of an aircraft, houses the foremost individual components, and ultimately determines fuel efficiency. The advent of lean-burn engines, with temperature potentials as high as 3,800°F (2,100°C), has helped drive demand for these new materials. Considering that the freezing point of current super alloys is around 3,360°F (1,850°C), the challenge becomes finding materials which will withstand hotter temperatures.
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