S90V Chopper

[BluntCut MetalWorks]

Those are really good results, Luong. I didn't know S90V could be that robust, much less at that hardness and geometry.

Thanks J! You are right, S90V under standard/control ht is prone to chipping even at lower hardness. Large and numerous carbides can't(hardly able to) move/displace in martensite matrix (control ht), thus instant pile-up dislocation = where carbide sharp (low bending curvature) edge will nucleate/initiate crack which lead to fracture/chip.
BCMW HT which to produce martensite matrix facilitates carbide displacement/plastic in yielded condition.