K390 knife blades are made from Böhler K390 MICROCLEAN® powder metallurgy steel, renowned for its exceptional edge retention, extreme wear resistance, and outstanding cutting performance. Thanks to its high carbon and vanadium content, K390 maintains a sharp edge significantly longer than most conventional tool and stainless steels. Professionally heat-treated and cryo-treated to 63.5–65 HRC, these blades offer superior cutting efficiency, excellent edge stability, and long service life. Ideal for hunting, bushcraft, outdoor, and high-performance handmade knives where maximum edge retention is required.