I read a ton of different opinions on other forums. Those CH3002, and 3507 are extremely high quality, and have stood the test of time. As for the cpm 20cv i know it has a high corrosion resistance but lacks the toughness the cpm 3v has. Take, for instance, CPM 20CV … RBid. What it is: M390 stainless steel, a powder-metallurgy material produced by Bohler-Uddeholm, is widely regarded as a "super steel" for its properties and performance. CPM-20CV is Crucible’s version of Bohler’s popular M390 steel which also influenced Carpenter to copycat with CTS-204P. CPM 20CV Steel Introduction. Sep 9, 2018 #19. CPM stands for, “Crucible Particle Metallurgy” and is one of the single most coveted stainless “super steels” … I've just never actually used s90v so I wastn't sure. So I am stuck in a hard place between these two steels. Everybody just seems to love M4 and M390 for stainless because they're in a sweet spot for all the attributes. M390. Who uses it: Benchmade, Zero … With significant amounts of Chromium, Molybdenum, Vanadium, and Tungsten, these steels are 100% ready for action. The s35vn, and M390 hold an edge forever, but are not the easiest knives to sharpen. #1 ... so I did get them in 20CV and M390 formats. But I have folders that are top shelf for me, user wise, in the CPM20CV / M390 ! The 801 is like a higher priced 9103 with a flipper tab, and extra blue annodized hardware and slightly better 14c28n steel vs the 12c27 in the land. Martensite forms when austenite cools so quickly that … CTS-204P is made by the USA-based Carpenter Technology Corporation and CPM-20CV is … In a carbon-rich alloy like CPM 20CV, the process of austenitization heats the steel until its crystalline structure changes to become austenite instead of ferrite. Advantages: Extremely high wear resistance and corrosion resistance. I’ve used both quite a bit, on cardboard, zip ties, … Apr 6, 2014. 1,674. 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 … These facts alone should tell you something. The steel saw little use in knives until Latrobe steel copied M390 and sold it as 20CV, which then became popular with several production knife companies. Its high austenizing temperature imparts M390 … When you produce a larger knife you need a type of steel that is a lot tougher, something M390 simply does not excel at. The PM process combined with the high chromium content imparts M390 / CPM 20CV with good grindability and excellent polishability. CPM 20CV Steel is Crucible’s answer to Bohler’s M390 stainless steel. It also helped Carpenter to create CTS-204P, which is also quite similar. I prefer M4, as I would guess the majority of people on BF would. M390 was developed by Bohler in the late 1980s as a modification to K190, which in turn was a powder metallurgy version of D7 tool steel. #6 comis, May 13, 2014. amdmaxx likes this. On a chemical level there are a couple types of steel that closely resemble M390. I think the difference is experienced on paper more than it is in common use. CPM 20CV is a martensitic steel, which refers to its hard crystalline structure with lens-shaped or lenticular grains. I've always loved m390/20cv more than any other steel, well except for maybe 154cm from my noob days, so I'll probably stick with the 20cv. Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. M390 / CPM 20CV is a PM stainless steel that offers good wear resistance with excellent corrosion resistance through the use of high chromium and vanadium content. Its brother, N690 is then a much better option. Thanks for the input. I would think M4 is tougher, have slightly less edge retention, is easier to sharpen, and is less corrosion resistant compared to CPM-20CV. Any input from knife fans out there would be greatly appreciated. Types of steel that closely resemble Böhler M390. Disadvantages: Relatively difficult to sharpen. 20CV is objectively better in most categories than S35VN.

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