CPM-S90V is a top-quality stainless steel that is produced using the Crucible Particle Metallurgy (PM) process. This steel is known for its exceptional ability to maintain a sharp edge for a long time, making it highly resistant to wear. Additionally, it offers corrosion resistance similar to that of 440C stainless steel. CPM-S90V strikes a great balance between toughness and edge retention, surpassing M390 in this regard. Its toughness is comparable to that of S30V and VG10. If you're looking for a knife that excels in both wear and corrosion resistance, CPM-S90V is an excellent choice.