http://www.cutleryscience.com/reviews/blade_materials.html

It's interesting to read about the S30V. Lots of problems with heat treatment, lots of mixed feelings on how effective it is and I especially like the comment about the green beret having edge retention comparable to a Buck 119...a knife I bought at Walmart last year for under $20. It seems that there are many reports of 'gross fractures'...that's what I'd call what happened in the video regardless of the 3 lb. hammer.