dropless® 5000

dropless® 5000 is the ta-C DLC coating deposited using Argor-Aljba's patented dropless® technology at a temperature of less than 100 °C with a standard thickness of 0.5 µm. The dropless® 5000 coating has a very high sp3 percentage (typical of natural diamond) of about 85% and a hardness of about 48 GPa (5000 HV).

VDI abbreviation ta-C
Process PVD Arc
Structure Amorphous
sp3 fraction [%] 85
Color Rainbow
Thickness 0.5 µm
Max. operating temperature [°C] 500
Hardness [GPa] 48
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.
Dropless® deposition technology does not alter surface roughness and, under certain conditions, helps to reduce it. dropless® 5000 lends itself to a wide range of applications:
- cutting tools for turning, milling, drilling, countersinking, reaming of non-ferrous materials
- particularly suitable for micro-tools
- watchmaking components