1.1 This specification covers the requirements for a cadmium coating vacuum-deposited on iron and steel basis metals. The coating is especially beneficial to those ferrous metals, heat treated to 46HRC and higher or having an ultimate tensile strength This specification covers the standard requirements for cadmium coatings vacuum deposited with or without supplementary chromate treatment on iron and steel basis metals. The cadmium metal for the production of the coating and the resultant coating sha