Building Basics: Gauging Aluminum

ist in nature as a free metal, but aluminum oxide, the raw material needed to produce .... Weight & Balance. • Inspection & Testing. NON EAA MEMBERS $389.
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Building Basics ALUMINUM is AN EXTRAORDINARY material, and without the "wonder metal" it could easily be argued that aviation would still be in the Dark Ages. Relatively inexpensive compared to other lightweight metals, aluminum possesses an outstanding strength to weight ratio. It doesn't exist in nature as a free metal, but aluminum oxide, the raw material needed to produce alumina, is found

Gauging Aluminum Aviation's wonder metal H.G. FRAUTSCHY

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in one of the world's most common ores, bauxite. Higher-grade bauxite ore contains

45 to 60 percent alumina, which is refined using a complex series of steps into pure molten aluminum, which is then cast into ingots or billets. Manufacturers then process the pure aluminum by melting it and adding alloying elements such as copper, manganese, silicon, magnesium, zinc, and other elements to get the desired mechanical properties. (If you're interested

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FLUSH RIVETED SHEET ALUMINUM ISO MPH \ AIRPLANE. FIRST U.S. AIRCRAFT TO HAVE STRESSED SKIN MONOCOQUE CONSTRUCTION

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