dianoir® G3, deposited at a temperature below 190ºC, is ideal for coating complex shaped components and delicate materials that cannot be coated with traditional PVD technologies. dianoir® G3 is resistant to chemical products and acidic and alkaline solvents and is hypoallergenic; it is therefore highly valued for coating 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 data given are approximate values, depending on application, environment and test conditions. Coating hardness HIT [GPa] Measured by nano indentation according to ISO 14577. The hardness can be adapted to the application. Coefficient of friction (dry) versus steel determined by dry disc ball test with a steel ball according to ASTM G99. These values may be exceeded during run-in. Maximum service temperature [°C] These are approximate values.



dianoir®G3, which is particularly suitable for watchmaking components, has the following advantages:
- excellent adhesion on brass, stainless steel and titanium alloy 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 watch movement components that will benefit from an improvement in their tribological and decorative properties