DENTAL ALLOY FOR REMOVABLE/FIXED DENTURES Russian patent published in 2023 - IPC C22C19/07 A61L27/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to alloys based on the Co-Cr system intended for the manufacture of removable/fixed, clasp dentures with high mechanical properties and an excellent combination of strength, ductility and hardness, as well as good reproducibility of these characteristics. Dental alloy based on cobalt and chromium for dentures, obtained by vacuum arc remelting, contains the following, wt.%: carbon 0.5, manganese 1, tungsten 1, chromium 29, molybdenum 5, silicon 0.7–1 and the rest of the alloy is cobalt, while the alloy was obtained by vacuum-arc remelting using cobalt, molybdenum, manganese, tungsten and carbon with a purity of 99.95%, chromium with a purity of 99.99% and silicon with a purity of 99.999%.

EFFECT: inventions allow to provide ultimate strength of 885–936 MPa, yield strength of 605–751 MPa and plasticity in tension of 9–13% at room temperature.

1 cl, 3 dwg, 1 tbl, 1 ex