Recent Examples of duralumin from the Web
The wings and fuselage were constructed from corrugated duralumin, a light, strong alloy of aluminum, copper, manganese, and magnesium, while the landing gear and bracing were all steel.
Close will take with her that ultra lightweight duralumin tray her mother received, made from the same material so much of the aircraft was to help keep it in the air.
Then came the PCA-1A, which cut weight using duralumin tubing instead of steel construction, and fabric covering the wings instead of plywood.
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