The invention refers to the electrolytic deposit of a tin- and ruthenium-based alloy having good features of corrosion resistance. In particular, the invention refers to an ecologically compatible process to achieve the electrolytic deposit of the alloy and to the operative conditions to make the deposit. Moreover, the invention refers to the electrolytic bath from which the alloy is caused to electro-deposit. In particular, the electrolytic bath is advantageously distinguished by the total absence of toxic metals and cyanides. The invention refers also to the alloy obtained through that process, as well as to the object/manufactured article covered with the alloy obtained through that process.