CoCr-based milling blank

Cobalt based dental alloy for ceramic

DD Bio CW are CoCr-based milling blanks for the fabrication of metal frameworks for metal-ceramic crowns, bridges and fixed restorations. DD Bio CW blanks offer high processing reliability and guarantee precise milling results. The alloy is corrosion-resistant, biocompatible and free of tungsten, nickel, beryllium, indium and gallium.

Excellent results are achieved by using a veneering ceramic that is matched to the CTE of the material using long-term cooling. The bonding oxide formers contained ensure an optimum metal-ceramic bond.

Due to its low hardness (255 HV10), the material is easier to mill and can be polished excellently. This reduces wear on the milling cutters, resulting in longer tool life.


  •  Highly resistant to corrosion
  •  Free from nickel, beryllium, indium and gallium
  •  Better millability due to lower Vickers hardness 
  •  Very good polishing properties
Manual / Gebrauchsanleitung

Consult instructions for use

Physikalische Eigenschaften

Physical and mechanical properties
Density8.4 g/cmc
Solidus-liquidus termperature1307-1417°C
Melting point1470°C
Yield load strength (Rp 0.2)395 MPa
Percentage elongation at fracture11%
Modulus of elasticity233 GPa
Vickers hardness255 HV 10

Thermal expansion coefficient 25-500°C

14.3·10-6 K-1

Thermal expansion coefficient 25-600°C

14.5·10-6 K-1

Maximum firing temperature980°C
Suggested ceramicsVITA VM13
Cytotoxicity test according to ISO 10993-5Passed


DD Bio CW for open systems Ø 98,5 mm

Art. no. Height (mm)
G920 8
G921 10
G922 12
G923 13,5
G924 15
G925 18

Chemische Zusammensetzung [Gew.%]

Cobalt (Co)66
Chromium (Cr)27
Molybdenum (Mo)6
Others: Si, Mn 


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