The knife was originally in m390 but they switched to 204p because they were having problems getting m390. Or even between those two steels and steels like 154CM or VG-10 for that matter. Edge retention testing is continuing, we have now tested 18 different steels, and four of those steels with multiple heat treatments. The knife was originally in m390 but they switched to 204p because they were having problems getting m390. Is there a reason people prefer M390 over CTS-204P? Rather than pouring liquid steel into a mold and letting it slowly cool, the liquid is passed through a gas spray which rapidly solidifies small particles, creating a steel powder. I have a Benchmade Ritter Mini-Grip in M390 and a Spyderco Southard in CTS-204P, and as far as I can tell they are very similar. Carpenter CTS-204P is a powder metallurgy stainless steel. Many steels are high hardness (ZDP-189, M390) and many are high toughness (3V, INFI, and Vanadis 4 Extra) but no steel really matches M4 in its combination of the two. I have learned more from Knife Steel Nerds than I have from any other site we share. I doubt anyone can tell the difference between the two in regular use. They are effectively the same steel. I'm thinking that Carpenter makes more 204P than Bohler makes M390. Source: Knife Steel Nerds. I have an M390 0652 and my serial number is 0957, aren't they stamped numerically? All things pocket knives. The carbides (white particles) are finer and more uniform in the powder metallurgy version. I would recommend keeping your M4 blades with a thin coat of oil on them when not in use to prevent them from corroding. For example, the ZT0562CF is worth a lot more in M390. With significant amounts of Chromium, Molybdenum, Vanadium, and Tungsten, these steels are 100% ready for action. CTS 204P is a premium stainless steel that offers high performance, and the closest equivalents I can think of would be the two following steels; M390 from @Bohler and the CPM 20CV from @Crucible, they are premium steels with close chemical composition and both contribute in making high-end knives (with a little differences in edge retention, hardness, and toughness). Beyond that example, they're almost identical. CTS-204P Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Worldwide Knifemaker Database and Directory, 5 from the Grinder – Michael West (Westknives), 2020 Black Friday/Cyber Monday Deal Thread, Making Known the Unknowns: Case Fixed Blade Patterns Revealed, 5 from the Grinder: John D Dennehy (Dan-D Knives), Tony Bose, legendary slipjoint maker, passes away at 74, Weekend Over Open Thread: Better late than never…. M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Either that or im making a couple in CPM m4 or m390. CPM-M4 is a bit of a different animal though, it's harder and tougher than m390, CPM-20CV or CTS-204P, but it's a lot less corrosion resistant than any of those three. ), New comments cannot be posted and votes cannot be cast. Comparing: CPM S35VN vs. CPM 20CV. Overall it’s a popular choice thanks to its high wear and corrosion resistance, it’s premium steel and because of that its a great pick for high end or limited-edition knives. M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? I would say that the difference in edge retention and corrosion resistance between S90V and M390/204P/20CV is pretty insignificant. I'm people and I don't prefer M390 over CTS-204P. Save my name, email, and website in this browser for the next time I comment. It is highly wear resistant so it will hold an edge for a long time. Edge retention testing is continuing, we have now tested 18 different steels, and four of those steels with multiple heat treatments. Press question mark to learn the rest of the keyboard shortcuts. The composition is almost identical to Bohler M390. KNIFE Magazine is an oversized, full color, glossy print publication — 50% larger than a standard magazine and dedicated to serving collectors, knifemakers and other enthusiasts. IMHO, M390 is a true super steel whilst s30v is simply a very good steel. Below shows a comparison between CruWear (conventional) and CPM CruWear (powder metallurgy). Composition Comparison Graph For The Knife Steels Carpenter CTS-204P, Latrobe DuraTech 20CV, Bohler-Uddeholm M390 Version 4.36 From specs, they seem to be almost exactly the same steel. Type and hit enter to display search result. M390 is a huge improvement over s30v. Advantages: Extremely high wear resistance and corrosion resistance. (Granted, heat treat might be a little different, but we're talking Benchmade and Spyderco, here, so they'll both be very good. That is if you can put aside personal bias. There are only a few hundred of the m390 0562s out there. Supply and demand. Someone probably made a decent-sounding argument, and then everyone else just bought into it because it sounds good. There are only a few hundred of the m390 0562s out there. Composition Comparison Graph For The Knife Steels Carpenter 20CP, Latrobe 20CV, Carpenter CTS-204P, Bohler-Uddeholm M390, Crucible S90V Version 4.36 An alternative to r/knives. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. In the Comparison on cts 204p vs m390 steel that M390 is first and foremost an awesome edge retention steel. Toughness Test K390 vs Cruwear vs S110V. Data Sheets: 20CV Data Sheet CTS-204P Data Sheet M390 … KnifeMagazine.com is our online presence, offering news, events and other information to all visitors and a wealth of information to Premium Online Members including information on historical knife markings, knifemaker markings, about 500 magazine issues, and more! March 30, 2020 Larrin. Thanks to Josh Warren and Alex K for becoming Knife Steel Nerds Patreon supporters! They are both pretty much the same steel. Your email address will not be published. While they have similar histories and composition, there are a few. There are relatively few 0562cf made in M390, so they're valuable simply for the rarity/collectability. M390 has been around a bit longer (at least so it seems) and you have more knives in it. 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. Who uses it: Benchmade, Zero Tolerance. If you were comparing CPM-M4 to CPM-3V for such a tool the decision would be far more difficult. They are more similar than they are different in terms of performance. 20cv: Lower toughness, lower edge stability, higher wear resistance, likely higher corrosion resistance If 3v microchips when treated by Survive Knives then 20cv should be a relative nightmare. You won’t see much wear at all from the thing even through some pretty rough use. The ingot has a very small level of porosity, which is eliminated in the forging and rolling process. Press J to jump to the feed. 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. It's a cutting beast, not a hard use product. In my experience, it takes a keener edge, holds it much longer, and is not markedly more difficult to sharpen. Like you said, m390 and 204p (and also 20CV) are basically identical I wrote about how powder metallurgy steel production works and the history of it in this article. Required fields are marked *. Aug 21, 2017 - CTS 204P are the one kinds of best knife steel in knife industry.And the comprasion of cts 204p vs m390 steel.Deaits in which is the best supersteel. I'm sure this question has been answered somewhere, just wondering if anyone knew offhand :). CTS-204p is simply Carpenter's version of M390, and is US-made so many US knife manufacturers are switching to it because it's cheaper and more readily available here. The M390 knife steel is identical to the CPM 20CV or the CTS-204P in comparison of hardness (62HRC). I love my CTS204P Para2 which is the same alloy as M390 but made by a different foundry. The m390 0562cf's are more expensive than the 204p version because they're more rare. 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. It also has some pretty respectable toughness, and can take a good hard beating. So surprised how CTS-204P fails to be recognized as the M390 Equal. All about that third generation powdered metallurgy. Your email address will not be published. M390. Disadvantages: Relatively difficult to sharpen. M390 exhibits excellent edge retention, corrosion resistance, and high level toughness. The rapid cooling to produce powder rather than slow cooling to form an ingot leads to less segregation of alloy in the steel and a finer microstructure. In this case, there is a lower supply of M390. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Unless of course, you would like to force the patina. Latrobe 20CV alone has proven sharper smoother subjectively almost Cruwear like cutting right out of the box. 20CV and M390 are shown in the table above for comparison purposes.
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