I wouldn't think the SG of the materials would differ substantively...nor would it really tell us much. That said, I would love to know the Youngs Modulus and relative stress/strain curves for each. Throw in a phase diagram too <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

I would suspect that the YM for SR101 would be slightly higher than SR77....yielding a harder, yet less ductile material. Let us also not forget that there is a price difference between the two, and that to say SR77 is a better chopper is hard to substantiate. Anyone had a Battle Rat fail at chopping?

JYD #121
The chief cause of unhappiness and failure is trading what you want most in life for what you want at the moment.