cpm3v is good stuff. Don't you worry.
There are destruction tests which you can understand and there are destruction tests you can't. This one I could not

I know for a fact that 3v steel is as good as it gets toughness wise.
I have quite a few Busse's and love them. I have two Kreins and love them. I have K9 and love it. I will not hesitate a sec relying on K9 for my life.
I can break anything and on opposite side I can use anything ...

and K9 you can use with no worries