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Home > Precious Metals > Palladium

Precious Metals

Palladium

Palladium presents a white-grey tone, slightly darker than the color of platinum. Mixed with gold it produces a wide range of solid solutions in all possible concentrations and contributes to improve its hardness and mechanical properties.

It also contributes to extend the melting time interval of the alloy and lightens the color of gold conferring to it a warm grey tone.

In a liquid state Palladium can dilute substantial quantities of hydrogen and therefore requires great care and the implementation of all necessary precautions during the melting process.

PLATINUM and PALLADIUM bind easily with carbon producing the corresponding carbides (OtC2.Od2C5); these interstitial compounds penetrate the crystalline reticule of the alloy thus clearly modifying its original properties.

In a liquid state the formation of carbides depends from the period of contact of the metal with other compounds containing carbon.

The absorption of carbon during the melting of alloys containing Platinum and Palladium is directly proportional to the melting time, the metal-carbon contact surface and naturally the concentration of these two elements (there will be serious problems already with concentration in the alloy of over 60 ppm- parts per million of carbon).

The final effect will be great fragility of the alloy which will break or crack and cause heavy porosity of the metal-ceramic contact area resulting in its breaking off.

The contact with material containing carbon (melting pots or coatings containing graphite, etc.) must therefore be avoided when working on alloys with materials containing a high level of platinum or palladium in a liquid state. 8853 S.p.A. sells palladium guaranteed not only for a 999,5 purity degree but also for the part regarding the impurities contained by the metal, in compliance with the restrictions set forth by the ASTM standards.

It is supplied in the form of 250 or 1 kg plates or in Russian 999,7 bars/ cubes.
  • Chemical symbol: Pd
  • Specific weight: 12,02 g/cm3
  • Color: grey
  • Melting temperature: 1522 C