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Home > Precious Metals > Iridium

Precious Metals

Iridium

Iridium belongs to the group of platinic metals and is important for the preparation of dental alloys as it is a good grain refiner.

The addition of small quantities of iridium or ruthenium generates a higher number of crystallization nuclei during the solidification of the alloy, thus building a small-grain structure (from average diameters for the superior grains of 150 micron to 20-30 micron).

Such a processing generates a higher mechanical resistance of alloys, reduced formation of dendrites thus ensuring higher homogeneity, increased toughness and higher integrity of the thin borders and improved polishability.

8853 S.p.A. supplies iridium in POWDER form in bottles from 100 to 500 grams each.
  • Chemical symbol: Ir
  • Specific weight: 22,50 g/cm3
  • Color: grey
  • Melting temperature: 2454 C