We use Vanax and harden the steel directly at Uddeholm to about 58HRC.
Uddeholm hardens the steels in the HIP vacuum furnace, resulting in perfect micro grain retention.
This process is absolutely high-tech, unfortunately very expensive. That is one of the reasons for the high blade price.
Sharpest knife steel
You will not find this perfect and homogenous structure with any knife worldwide that a knife maker has hardened manually.
Not even with the broad mass of knives which were hardened in a continuous furnace and afterwards quenched in ice water.
The Vanax steel already has its optimum wear resistance at 58HRC.
A higher hardness would not achieve any improvement.