Alloys and accessories for the manufacture of spectacle frames, accessories and other metal parts, spectacle frames and parts thereof, and intermediate products and raw materials for such products

摘要

A copper-manganese-zinc-aluminium alloy, especially for production of spectacle frames, jewellery and other body-contacting metal parts which are worn on the body or attached to clothing, has the composition (by wt.) 3-7 (preferably 4.5-5.5)% Zn, 8-13 (preferably 10-11)% Mn, 0.5-3.5 (preferably 1.8-2.3)% Fe, 4.5-8.0 (preferably 6.0-6.5)% Al and balance Cu. Also claimed are jewellery, spectacle frames or frame components, metal parts for clothing, and semi-finished products or stock material (especially wire, strip or bar) produced from the above alloy.