1942 Alclad Marking Documentation: “The Aircraft Apprentice”

Further documentation of ALCLAD aluminum markings was published in the 1942 publication, The Aircraft Apprentice, Leslie MacGregor, Pitman Publishing Corp., 1942 (http://hdl.handle.net/2027/mdp.39015003323030).

From page 100 illustrated below: “It may be noticed that some codes are preceded by the letters ALC which signify that the alloy is covered on both sides with a coating of pure aluminum, and is known as Alclad. This coating prevents corrosion and amounts to approximately 10 per cent of the thickness of the sheet.”

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