My favorite SAK is a Vic Huntsman, but my EDC is a hunter green Classic with a stainless steel shamrock on the scale instead of the Vic cross.

From their website: All Victorinox knives are high carbon, stainless, first grade, A-quality stainless steel, x 50 CrMo. They are tempered to a 55-56 HRC hardness for optimum edge retention.

Here is a video showing how SAKs are made:

http://www.youtube.com/watch?v=CC78CMFIwnc&feature=related