JEWELLERY ALLOY BASED ON PLATINUM Russian patent published in 2012 - IPC C22C5/04 

FIELD: metallurgy.

SUBSTANCE: invention refers to alloys based on platinum, which can be used for manufacture of jewelleries of rate 990. Platinum-based jewellery alloy containing the following, wt %, is proposed: platinum - 99.0-99.5, iridium - 0.1-0.7, cobalt - 0.1-0.5, and gallium is the rest.

EFFECT: obtaining platinum-based jewellery alloy allowing to use it at manufacture of jewellery of rate 990 by means of micro casting on molten models, and by using plastic deformation at manufacture of chains, including by machine method.

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