Analysis of the submarine outer hull material for restauration purposes

Restoration of any museum display implies use of authentic materials and technology. Technical Museum in Zagreb is in the process of restoring small Italian submarine form the year 1943. During restoration in order to achieve maximum authenticity it was necessary to determine submarine's outer hull material as well as weld material. Metallographic analysis was conducted on the hull's material and weld material in order to determine materials structure. Next step was determination of materials' chemical composition using scanning electron microscopy.