CORROSION RESISTANCE OF ALUMINUM ALLOYS

Scientists of the United States National Bureau of Standards have found that some aluminium alloys can resist corrosion in either a marine or inland atmosphere for at least 20 years. These results were obtained in a long‐range study conducted by F. M. Reinhart and G. A. Ellinger, of the Bureau's staff, for the Navy Bureau of Aeronautics. Besides determining the corrosion resistance of a large number of aluminium alloys, the study also provides data regarding the effects of heat treatment and protective coatings on corrosion rates.