Chrome Cobalt

Chrome Cobalt

Description

CC DISK NF CoCr - CoCr based disc for CAD/CAM system, free of nickel and beryllium which fulfils the requirement of the standard EN ISO 22674 for non-precious alloys and ISO 9693-1 for alloys intended for porcelain fused to metal restorations.

It is made of biocompatible alloy, which is easy to polish, has small amount of oxides and is therefore extremely suitable for porcelain. Ideal coefficient of thermal expansion allows usage of wide range of different ceramics.

You can use all types of porcelain you use for the classical veneering method on casted constructions, such as crowns and bridges, bars, Toronto bridges and other supra-structures.

The Vickers hardness 281 (HV10) value leads to good milling and drilling behaviour and gives a perfectly polished surface. Only few oxides are formed during ceramic firing.

Composition (m %): 

Co (Cobalt): 63.0 

Cr (Chromium): 24.0 

W (Tungsten) : 8.0 

Mo (Molybdenum): 3.0 

Si (Silicon): 1.0 

Nb (Niobium): < 1.0 

 

Technical Data: 

Type: 4 

Density: 8.3 g/cm3 

Coefficient of Thermal Expansion: 

  25–500 °C: 14.7 x 10^-6 K^-1 

  20–600 °C: 15.0 x 10^-6 K^-1 

Vickers Hardness (HV10): 281 

Yield Stress (Rp0.2): 478 MPa 

Tensile Strength (Rm): 581.5 MPa 

Modulus of Elasticity (E): ≈ 225.0 GPa 

Elongation after Fracture (A15mm): 10.4 %

 

Indications: 

Used for multiple-unit fixed dental prostheses for ceramic firing, including appliances with thin sections subject to high forces (e.g., removable partial dentures, clasps, thin veneered single crowns, full-arch prostheses, bars, attachments, implant-retained superstructures). 

Contraindications: 

Not suitable for patients with known allergies to alloy components. 

Intended Users: 

Dental professionals (dental technicians). 

Patient Selection Criteria: 

Totally or partially edentulous patients. 

Ceramic Firing: 

Use ceramics suitable for porcelain-to-metal restorations with appropriate thermal expansion coefficients (e.g., VITA, Ivoclar, Ducera).