Bohler M390, comparable to CPM-20CV and CTS-204P, stands out as a superior powder metallurgy stainless steel, boasting an impressive carbide content. This composition not only ensures exceptional edge retention and remarkable corrosion resistance but also maintains ease of sharpening. Its popularity among high-end production and custom knife makers is well-deserved. However, it's worth noting that the relatively high volume of carbides and its coarse microstructure result in somewhat lower toughness.