dialong® is the ta-C DLC coating deposited at a temperature below 100 °C with a standard thickness of 1 µm (customised thicknesses are available on request). The dialong® coating has a sp3 percentage (typical of natural diamond) of about 75% and a hardness of about 52 GPa (5300 HV).

VDI abbreviation ta-C
Process PVD Arc
Structure Amorphous
sp3 fraction [%] 75
Color Black grey
Thickness 1 µm
Max. operating temperature [°C] 500
Hardness [GPa] 52
Friction coefficient 0.1

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.

High hardness: protection against abrasive wear, longer tool life, lower production costs.
High thermal stability up to 500°C: possibility of MQL and dry finishes.
Protection against adhesive wear: longer tool life and better quality of the machined component.
dialong® has proven effective on cutting tools for turning, milling, drilling, countersinking, reaming operations of non-ferrous materials such as:
- aluminum alloys up to 13% Si
brass, copper, bronze, silver, gold, platinum
- some types of titanium
- graphite, FR4 PCBs and composite materials
wood, plastic, epoxy resins



Flexibility at the service of the customer.


dialong® can be applied to a wide range of materials and the thickness can be customised according to the field of application. 

Circular saws.


With dialong®, the teeth of circular saws stay sharp for a very long time.