Sub-Zero Treatment

It is a cryogenic (sub-zero) cooling process applied to remove the retained austenite remaining in the microstructure after hardening heat treatment and to transform the structure into more stable, wear-resistant martensite.

Retained austenite can lead to dimensional changes and microstructural instabilities over time, shortening tool life. Thanks to sub-zero treatment, the wear resistance of steels is increased and its dimensional stability is 100% guaranteed.

It is widely applied in precision measuring instruments, broaches, drills and hot and cold work tool steels requiring high performance.