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1) High noble alloys (Precious metal)

This group has a composition that is over 60% noble metal (gold, palladium and/or platinum), of which more than 40% must be gold.

Examples of high noble dental alloys.

  • Product: JRVT  /  Alloy Color: Yellow  /  Composition: 77% Gold, 13% Silver, 8.5% Copper, 1.0% Palladium, Less than 1% Indium, Iridium, Zinc
  • Product: Noble-Cast 67  /  Alloy Color: Yellow  /  Composition: 64.0% Gold, 23.4% Silver, 3.0% Palladium, 0.1% Platinum
  • Product: Encore (White High Noble)  /  Alloy Color: Silver (white)  /  Composition: 48% Gold, 40% Palladium, 4.3% Zinc, 3.9% Tin, 3.75% Indium, 0.05% Rhenium

2) Noble alloys (Semiprecious metal)

These alloys have at least 25% noble metal content.

Examples of noble dental alloys.

  • Product: Argenco 20  /  Alloy Color: Yellow  /  Composition: 20% Gold, 20% Palladium, 40% Silver, 18% Indium, 2% Zinc, Less than 1% Iridium.
  • Product: Argelite SR+  /  Alloy Color: Silver (white)  /  Composition: 79% Palladium, 8.4% Tin, 5.0% Cobalt, 5.0% Gallium, 2.0% Gold, 0.6% Ruthenium

3) Non-noble (Nonprecious metal)

These alloys are also referred to as base metals. Their noble metal content is less than 25% (they may have none). They often contain large percentages of nickel, cobalt, chromium or beryllium.

Examples of non-precious (base) dental alloys.

  • Product: Argeloy N.P. Supreme  /  Alloy Color: Silver (white)  /  Composition: 61% Cobalt, 27% Chromium, 6% Molybdenum, 5% Tungsten, 1% Silicon, Less than 1% Manganese, Iron, Carbon
  • Product: Argeloy N.P.  /  Alloy Color: Silver (white)  /  Composition: 54.0% Nickel, 22.0% Chromium, 9.0% Molybdenum, 4.0% Iron, 4.0% Niobium, 4.0% Tantalum, 3.0 % Trace elements.
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