EXXTRAL®-plus, a coating based on aluminum-titanium nitride, for the highest requirements in cutting of hardened steel, in case of high-performance cutting with or without cooling lubricant.
The anthracite-coloured EXXTRAL®-plus is characterized by a very high hardness. The properties are retained up to high thermal and mechanical loads. EXXTRAL®-plus is highly inoxidizable and is provided with a low heat conduction coefficient.
Application of the EXXTRAL® layers is implemented by means of PVD technology. This allows the deposition of the layer on tool steels, HSS, cemented carbides or many other materials with temperatures less than 450° C.
|Material:||Aluminum-titanium nitride, AlTiN (stacked)|
|Microhardness HV 0.05:||3300 ± 300|
|Coefficient of friction against steel 100Cr6:||0,7|
|Layer thickness [µm]:||2 – 4 |
|Maximum application temperature:||800° C / 1470° F|
|General characteristic:||High hardness, high oxidation stability, low heat conduction coefficient|
|Preferred applications:||Processing of hardened steel; high-performance process, lubricated (KSS), semi-dry (MMS) or dry processing; Cutting oprations under in-service conditions, where other layers reach the limit of the thermal and mechanical stability|
 Dependent on tool size, also for micro-tools of less than 2 µm.