I would probably say that AUS6 is a tougher steel than the blade on your SAK. I'm not sure of the exact steel used by Wenger and Victorinox, but since they are mass produced, I would think they must be made of an economical grade steel to meet production costs. AUS6 is not the best steel around but it is very servicible. I have to say that your Urban Shark is one of the best buys around. CRKT as a whole makes great knives for the money.
[This message has been edited by el cid (edited 03-01-2001).]