The universal multiple-layer coating

A TiAlN-based hard coating, especially developed for drilling under extreme conditions.

Where is SUPRAL employed?

Exceptional results during drilling, also with inferior cooling and tools without inner cooling. Outstanding results also during milling and forming, as well as drilling.

General characteristics:

Preferred applications:

In numbers:

Hardness: 3.500 ± 500 HV
Maximum application temperature: 800°C / 1470°F
Coefficient of friction against steel: < 0.5
Layer thickness: 2-4 µm
Color: black

Datasheet as a PDF file
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The eifeler Group

Your competent partner for all coating demands.

Duderstädter Straße 14
40595 Düsseldorf

Phone: 0049 - 211 - 97076-0 - Fax: 0049 - 211 - 97076-955

E-Mail: gruppe {at}