The Udylite process is a process for the electrodeposition of metallic cadmium on metals. Zinc plating has been and is an extremely valuable method of retarding the corrosion of steel parts of airplanes and will, no doubt, continue in use for this purpose. Cadmium is not better than zinc from the erosion standpoint, but has greater resistance to corrosion from atmospheric and salt-spray exposures and will give equivalent protection with a thinner plate. For this report, many specimens of cadmium-plated steel sheets were prepared with coatings varying in thickness from 0.0001 to 0.001 inch. These were subjected to atmospheric and salt-spray exposure and to physical tests to ascertain some of the properties such as ductility and bond and to obtain a practical plate thickness which would offer sufficient corrosion resistance.