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Precious Metals

Silver

Silver is a ductile and malleable metal featuring a typical white color. It is the best heat and electricity conductor available.

It can be easily combined to sulfur, chlorine, phosphor and vapors containing these elements or their compounds. Food containing sulfur compounds also generate pronounced blackening of silver caused by the formation of surface sulfurs.

Sulfurous anhydride itself, which is present in urban atmosphere, generates the blackening of silver items. Pure silver may liquefy considerable amounts of oxygen which during solidification may cause great porosity.

Silver combined to gold generates a full range of substitution solid solutions at all concentrations. If added to gold it can be used to create alloys with higher mechanic characteristics. It also tends to lighten the color of alloys and it is very effective in neutralizing the reddish color tone by copper.

The addition of palladium to gold alloys containing silver greatly improves their resistance to surface blackening.

It is therefore essential to had large amounts of palladium to these alloys (in some cases the ratio is 1:3 with silver).

8853 S.p.A. sells silver guaranteed not just by the 999 (three nines) or 9,99 (four nines) purity degree, but also for the part related to the impurities contained in the metal as it complies with the limits provided for by ASTM standards.
  • Chemical symbol: Ag
  • Specific weight: 10,49 g/cm3
  • Color: grey
  • Melting temperature: 960,80 C