Corrosion Embrittlement of Duralumin V : Results of Weather-Exposure Tests Page: 2 of 30
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N ASA Technical UbrI - - - -
3 1176 01425 6326
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS.
TECHNICAL 1NOTE NO. 304.
CORROSION EMBRITTLEMENT OF DURALUMIN.
V. RESULTS OF WEATHER EXPOSURE TESTS.
By Henry S. Rawdon.
Light aluminum alloys of the duralumin type, that is, high-
strength wrought alleys whose properties can be improved decid-
edly by heat treatment are of very great importance, especially
in the form of sheet and tubes, for aircraft construction. The
permanence of such materials when exposed to corrosive condi-
tions such as may obtain in aircraft service should be known,
however, with a high degree of certainty and precautionary meas-
ures taken to guard against any possible serious deterioration
in service. To obtain reliable information along this line an
investigation, the results of which form the basis of this ser-
ies of reports (Reference i), has been carried out at the Bureau
of Standards in cooperation with the National Advisoxy Committee
for Aeronautics, the Bureau of Aeronautics of the Navy Depart-
ment, and the Army Air Corps. The leading manufacturers have
also participated in the investigation by furnishing practically
all of the materials needed. The investigation, which was start-
ed in the latter part of 1925, is still in progress and final
and complete answers have not been reached on all points concern-
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Rawdon, Henry S. Corrosion Embrittlement of Duralumin V : Results of Weather-Exposure Tests, report, February 1, 1929; (digital.library.unt.edu/ark:/67531/metadc53984/m1/2/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.