Thank, I'll check it out.
I get all the latest info on knife steel from KnifeSteelNerds.com by Larrin Thomas who has a PhD in metallurgy from Colorado School of Mines. Larrin's father is a custom knifemaker and forges damascus steel so Larrin grew up going to knife shows with his father. Larrin has the equipment to do certified toughness, hardness and edge retention tests.