cpm vs 1095 lateral stress

[HepatitisJ]

how would a 1/4" thick 1095 knife stack up to a 3/16 thick 3v knife in a lateral stress test? how much tuffer is 3v? and we are assuming the knife is the exact same design. lets use a bk2 for example. if they made a 3v 3/16 version, would it be tuffer or wouldn't be able to compete with that little thicker 1095. could u get it down to a 1/8" in 3v and still be as tuff 1/4" 1095?

 

[hardheart]

A 1/4" bar of something is 2 times stiffer than a 3/16" bar of the same thing, so that is something to deal with before comparing alloys or starting to grind away metal. And are you concerned about flexing, bending, or fracturing?

 

[HepatitisJ]

im concerned with fracturing and bending to a point where it will not return to original state.

 

[james terrio]

Assuming all the usual things (proper HT, no pre-existing cracks, no stress risers etc), you'd have to try pretty hard to break a 5" blade of 3/16" or 1/4" stock, no matter which steel it's made of, except maybe by aggressively prying with the very tip.

3V is a good deal tougher than 1095 at the same hardness, so you might very well be able to achieve the same durability in 3/16", but I can't say for absolute certain. I do know that 3V at 3/16" thick with a full flat grind will take one heck of a pounding - far beyond what I would consider normal knife use - without breaking or taking a set . Honestly, I'm not entirely sure why any knife that short "needs" to be 1/4" thick.