Hard Coating Series
AlCr-based Coatings
AlCrN-coatings have a very high oxidation resistance combined with a very high thermal stability. The low affinity for cold welding and the high wear resistance allow a wide range of applications experiencing extended lifetime of tools.
The AlCrN-coatings are especially suited for the use on mechanically and thermally highly stressed tools and for dry- and wet machining at medium and high cutting speeds.
The AC+-coating is characterized by excellent hardness at high temperature and oxidation resistance. Its nano-structure improves the toughness and minimizes possible crack formations. The AC+ is the right coating for (dry) milling and drilling or hot stamping of sheet metal.
AlCrN-coatings are available in different compositions, i.e. the Aluminum content and the corresponding Cr-content can be widely varied in quantity. Ultimately the composition of the coating is determined by the application requirements.
If AlCrN-coatings are alloyed with certain elements, the lifetime can be extended considerably, e.g. for gear cutting tools.
We offer the following AlCr-based Coatings designed for your applications:
| Hardness (*) GPa |
max. service temperature °C |
Color | |
| AlCrN | 36 | 1,100 | light anthracite |
| AC+ | 36 | 1,100 | anthracite |
(*) Nanohardness, deviations +/- 3 GPa
Customized AlCrN-coatings are available on request.