1943 Alclad Marking Documentation: “Aircraft Production Standards”

Additional documentation of ALCLAD aluminum markings from the 1943 publication Aircraft Production Standards, Stuart Leavell and Stanley Bungay, McGraw-Hill, 1943. (http://catalog.hathitrust.org/Record/001040026)

The entire text is not currently available online, but Google Books allows viewing of snippets of the work including the following: “A typical identifying code such as 24ST ALC may be used for an example. This group of numbers and letters will be found stamped repeatedly across the surface of sheet metal. Here the numerals 24 indicate a specific alloy. By referring to the table on page 253, it is possible to find the materials and their percentages used in the composition of this alloy.”

(Source: http://www.google.com/search?amp;channel=sb&tbm=bks&q=%22A+typical+identifying+code+such+as+24ST+ALC+may+be+used+for+an+example.%22)