Copper-zinc-manganese alloy for the production of articles coming into direct and prolonged contact with the human skin

摘要

An alloy suitable for replacing Cu-Ni-Zn alloys for use in spectacles and other opticians' products, jewellery and cutlery, with substantially the same aesthetic characteristics and workability but without the risk of the release of noxious elements; the alloy has the following nominal composition by weight: from 50% - 70% Cu; from 8% - 25% Mn, from 0.05% - 1% Sn, the rest being Zn with possible small additions of Mg (from 0.01 - 0.1% by weight).