dianoir® G3, deposited to a temperature below 190ºC is perfect for coating components of complex shapes and soft materials that cannot be coated with traditional PVD technologies. dianoir® G3 is resistant to acid and alkaline chemicals and solvents and is hypoallergenic; it is, therefore, very appreciated for the coating of watch bracelets.

dianoir® G3

VDI abbreviation a-C:H
Process PACVD
Structure Amorphous
sp3 fraction [%] 40-60
Color Intense black
Thickness 2-3 µm
Max. operating temperature [°C] 400
Hardness [GPa] 19-24
Friction coefficient 0.12

All provided data are approximate values, depend on the application, environment and test conditions. Coating hardness HIT [GPa] measured by nano indentation according to ISO 14577. Hardness can be adapted to the application. Friction coefficient (dry) compared to the steel determined by ball-on-disc dry test with a steel sphere according to ASTM G99. During the running-in the indicated values may be exceeded. Maximum service temperature [° C] These are approximate values.



dianoir®G3, particularly suitable for watchmaking components, has the following advantages:
excellent adhesion on brass, stainless steel and titanium alloys components
homogeneous black color
- decorative and functional coating in one solution
- non-toxic process and biological compatibility are optimal properties for the use of dianoir®G3 in contact with the human skin
- ideal for all components of the movement of watches that will benefit from an improvement in their tribological and decorative properties