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Although theoretical studies afford valuable information, simple practical tests are of marked assistance in predicting the resistance of materials to specific corrosive conditions. One of the oldest of these is the salt-spray. The authors believe much of its unpopularity results from uncontrolled variables and the lack of standardized procedures and they present data to show that the test is both useful and reliable when properly administered. The factors which they believe should be controlled are briefly discussed and “standard” conditions for each factor are suggested. However, the paper has been written to stimulate discussion of the test and promote more universal agreement on the testing methods used and is not intended as a “standard practice.”
Dix, E. H.
Chief Metallurgist, Aluminum Company of America, New Kensington, Pa.
Bowman, J. J.
Aluminum Company of America, New Kensington, Pa.