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The necessity of the metal industry in aeronautics

Despite the development of advanced composites, the aerospace industry still makes extensive use of aluminium- (Al), titanium- (Ti), magnesium- (Mg), and nickel- (Ni) based alloys. These are employed mainly in engine components and structural parts, being subject to extreme thermal and mechanical loads, unable to be borne by composite materials.

The above considerations, in combination with the Problem of the Ageing fleets, suggest that metal alloys will remain a subject of primary importance in aeronautics for many years to come.