This article is taken from Chapter 5 of Principles of Brazing. The chapter is titled ''Filler Metals for Carat Gold and Hallmark Silver Jewelry." Brazes for jewelry, silverware, and objets d'art merit separate consideration from I industrial brazing alloys because, in addition to providing joints that are mechanically durable (in terms of their strength, ductility, and wear resistance), they must satisfy two additional and fundamentally different criteria specific to this usage: They must match the caratage and the color of the components. The surface texture of the solidified filler metal and its resistance to corrosion also must not differ greatly from that of the joined parts, so that any joints remain essentially invisible to the naked eye (Fig. 1).
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