Ryan8 said:
I'm completely lacking in information about it's actual performance, other than edge retention and my totally non-scientific experience. Do you have any good sources of info?
A good source for the info is the fact that it is 3% Carbon(hard) and 20% Chromium(hard). VS two steels reknown for their toughness(non-brittle) - 5160 and L6 which have only .60 -.70% Carbon and usually less than .8% Chromium. 440C, which isn't terribly tough at all and is nearly useless at an RC of 60(chips readily and is a complete pain to sharpen), is 17% Chromium and 1% Carbon. Physics is physics. In fact, if you look at all the steels famous for toughness, none have more than 7.5% chromium, with most at about 0-1%. Even CPM-3V is only .8% Carbon.
Hitachi, btw, did not answer the question regarding Charpy values in the cited example by Ryan8:
"What do the numbers 189
represent? Glesser said he does
not know. Chances are that few do.
He said that when he asked about
ZDPs charpy valuea measure
of the dynamic toughness of a
steelthe folks at Hitachi acted
like they didnt know what I was
talking about. We couldnt get a
good translation."
WYK