Cryo quenches only increase the hardness of the steel, sounds lovely until you need to temper it back down to 59 anyways, so you lose the benefit. Cryo was only intended to be used to increase the life span of machine tools that will never be resharpened.
Heat treatment for Elmax and RWL is straight forward enough. If you have the proper equipment.
Heat it up and hold at a certain temp for a certain amount of time, quench it, temper it to desired hardness (elmax requires 2x 2hr temper cycles, RWL only requires 1 x 2 hours)... job done. The temps can vary... for example, different hardening temps can be used to enhance certain properties of the steel... you can HT to either have the max levels of corrosion resistance, or maximum hardness (which won't be as corrosion resistant)
Heat treatment for Elmax and RWL is straight forward enough. If you have the proper equipment.
Heat it up and hold at a certain temp for a certain amount of time, quench it, temper it to desired hardness (elmax requires 2x 2hr temper cycles, RWL only requires 1 x 2 hours)... job done. The temps can vary... for example, different hardening temps can be used to enhance certain properties of the steel... you can HT to either have the max levels of corrosion resistance, or maximum hardness (which won't be as corrosion resistant)