The chemical composition of the high melting CoCr alloy follows the international standard ASTM F-1537 with the following chemical composition:

COMPOSITION (%)

Cobalt 58 to 69 Chromium 26 to 30 Molybdenum 5 to 7 Nitrogen Max. 0.25 Carbon Max. 0.14

MELTING INTERVAL

1287 to 1378 °C (2348 to 2512 °F) Density: 8.28 g/cm3 Coefficient of thermal expansion: 14.2 μm/K (600 °C)

A compatible alloy must be chosen for the overcasting procedure that complies with ASTM F1537, ASTM F799, ISO 5832-12 or ISO 5832-4.

The thickness of the metal after overcasting must be at least 0.5 mm, which can be reduced during machining and finishing up to 0.3 mm.

Welds must be performed in the range of 1120 to 1150 °C (2048 to 2102 °F).

Cylinders for overcasting with prefabricated Cobalt-Chromium (CoCr) belts have good corrosion resistance in aqueous media and high mechanical resistance against occlusal loads.

This is an alloy that presents high biocompatibility and is simple to handle by TPD, with excellent acceptance in the application of ceramics for CoCr.

In addition, this alloy is in tune with one of the strongest trends in the health area worldwide due to the absence of Nickel in its chemical composition, resulting in lower risks of allergenic reactions when in contact with living tissues, such as the oral mucosa.

PRECAUTIONS

The restorative techniques required to create the implant-supported prosthesis are highly specialized and involve complex procedures.

Improper selection of prosthetic components may cause implant failure and loss of the prosthesis.