CPM-20CV is Crucible’s version of Bohler’s popular M390 steel which also influenced Carpenter to copycat with CTS-204P.  As a Powder Metallurgy (PM) tool steel, you get a combination of impressive wear resistance and edge retention plus the added benefit of being highly corrosion resistant due to high levels of chromium. It’s still fairly new in the market but makers like Benchmade are already using CPM-20CV in newer models like their 556-1 Griptilian. In fact, Benchmade claim their M390 is marginally tougher but 20CV has better edge retention.