Case TruSharp

[yoopernauts™]

Is Case TruSharp stainless steel cryo treated from the factory? If not, would it benefit from a cryolab treatment?

Also, can I cryo treat knives in a simple freezer? Will it have a noticable effect? How long will I need to freeze at only 31 degrees to get a worthwhile result?

And what about 420HC?

Any replies will be gratefully appreciated by me.

 

[FlaMtnBkr]

I am not an expert but I'm pretty sure cryo treatment needs to happen right after a metal is quenched/ hardened. And the temperatures need to be a lot lower than the freezing point of water. Sticking your knife in the freezer next to the ice cream isn't going to do anything.

 

[orca8589]

You can google cryotreatment of steel online, and you'll get some ideas of what would need to happen for a steel to benefit from it. From what I understand, you have to quench at minus-hundreds of degrees to get any true benefit from cryo. Your kitchen freezer won't work. I don't know what Case does to their stainless steel, but I have both CV and Tru-Sharp, and the Tru-Sharp doesn't hold up as well.

thx - cpr

 

[knarfeng]

Don't know enough to really render an opinion except that I know the process is dependent on temperature, not time. An infinite time at 31°F will have no positive effect on the performance of the steel. You would have to go far sub-zero (-100F to -200F) to make a difference, assuming the process actually works. Opinions of metallurgists seem to vary on that and I have little trust in information from the web sites of companies who perform the treatment. I have no opinion as I have no actual data and am an engineer, not a metallurgist.