In the spirit of metal information, found this on blade forums:

S7 Impact toughness at Rc of 57 = 125 (ft-lbs)
CPM3V Toughness at Rc of 58 = 85 (ft-lbs)
CPM3v Imp.Toughness Rc of 60 = 50 (ft-lbs)
A2 Impact Toughness at Rc 60 = 40 (ft-lbs)
D2 Impact Toughness at Rc 60 = 21 (ft-lbs)


S7 really stands out! <img src="/ubbthreads/images/graemlins/eek.gif" alt="" />

JYD#10
Blade '08 - I challenge coined Dan Busse and WON!
Blade '10 - The score is now 2-0!