CPM 121 REX - red-resistant steel (Crazy Ultra Hard Knife Steel (CPM REX 121). Removes chips from N690.) The CPM Rex 121 tool steel composition was developed in Sweden in the middle of the 19th century. The American company Crucible Industries LLC produces a powder high-speed cutting alloy.
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Concluding the conversation about S125V steel, it must be said that it remains an infrequent material in the knife industry due to its high cost and high processing costs. However, if you want to have a model with exceptional qualities in your knife arsenal, then the CPM S125V is not a worse choice. After all, CPM S125V steel still remains one of the strongest and most reliable materials for making knives. Its resistance to corrosion, high hardness and excellent strength incline those who are looking for high-quality and durable knives, able to serve the owner for many years, to buy swords.
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CPM S90V® is a unique tool steel made by the Crucible Metallurgy process. It is a martensitic stainless steel with a high volume of vanadium carbides for exceptionally good wear resistance. S90V offers substantial improvements in wear resistance over 440C and D2, and other high chromium tool steels. Its corrision resistance is equal to or better than 440C. High vanadium content favors the formation of hard vanadium carbides instead of chromium carbides for wear resistance, leaving sufficient chromium in the matrix to provide good corrosion resistance.
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