Press question mark to learn the rest of the keyboard shortcuts. CPM 20CV is a steel created by Crucible to be excellent at resisting wear and corrosion, balanced with good toughness. The addition of niobium makes CPM S35VN about 15% to 20% tougher than CPM S30V without giving up any durability. With the exception of the Doug Ritter Griptilian versions (previously offered in S30V, and recently in M390 as a limited edition), Benchmade has not offered the beloved … Niobium is even better than vanadium at keeping grain sizes small, so its addition to the alloy helps increase edge retention without giving up toughness or wear resistance. CPM 20CV-steel. Data Sheets: 20CV Data Sheet CTS-204P Data Sheet M390 Data Sheet Source: Knife Steel Nerds. CPM 20CV Steel Introduction. Zero Tolerance, Chris Reeve and Hinderer all make several popular models with S35VN blades. Its high austenizing … Another consideration is corrosion. Higher chromium amounts allows some of the metal to form a protective, passive film of chromium oxide that repels rust and prevents staining. The 20CV stainless steel retains sharpness extremely well and is … Image from a 2005 Blade Magazine [8] Carpenter steel introduced their copy of M390 as “Micromelt 20-4” in 2009 [10][11] and was renamed as “CTS-204P” by the beginning of 2010 [12]. M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Both CPM S35VN and CPM 20CV contain vanadium, which is valued for its ability to create a finer grain in the steel that typically improves its ability to hold an edge. Come to Patreon if you want updates on testing as it is … Martensite forms when austenite cools so quickly that … According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. CPM steht für “Crucible Particle Metallurgy” und ist einer der beliebtesten rostfreien … The Zero Tolerance 0456 is a high-quality American-made folding knife that carries many of the features of a high-end knife - top quality materials, high tolerance manufacturing, and a design that reflects modern aesthetics with an eye towards performance. They're all corrosion resistant steels aimed at toughness and edge retention. -- | CPM S35VN Steel | CPM 20CV Your own use of the blade will determine which one is slightly better for your needs. 20cv will hold an edge the longest, so if you don’t plan on beating on the thing I would go with that. Molybdenum helps to prevent the pitting type of corrosion by lending the steel more strength. Too common to be called "Hype". The knife was originally in m390 but they switched to 204p because they were having problems getting m390. They're all corrosion resistant steels aimed at toughness and edge retention. That’s part of why it’s so highly regarded, in the first place. Hardness Ability. What sets the 556-1 apart is the CPM-20Vsteel alloy which you won’t find on any of the previous Griptilian models. CPM 20CV Steel is Crucible’s answer to Bohler’s M390 stainless steel. Scales are one thing, but let’s discuss the business end. The addition of niobium makes CPM S35VN about 15% to 20% tougher than CPM S30V without giving up any durability. With significant amounts of Chromium, Molybdenum, Vanadium, and Tungsten, these steels are 100% ready for action. 20cv is an improvement in my opinion. The m390 0562cf's are more expensive than the 204p version because they're more rare. Corrosion Resistance (out of 5) | 3.5 | 4 The vanadium in the alloy works to create a fine grain structure that helps hold an edge. Latrobe was purchased by Carpenter in 2011 [13] though Carpenter continued to sell their CTS-204P. Yeah, you can also add CTS-204P to that club. Introduction to CPM 20CV Crucible's CPM melting process makes steel more uniform down to the microscopic level for very stable, tough steel that is resistant to cracking or breaking. Toughness. Another consideration is corrosion. So we can understand more the Steel, let’s see its chemical … I have an esee izula for that, great little blade. The high percentage of chromium with a bit of molybdenum makes 20CV one of the best high-end, corrosion-resistent steels used in knife blades today. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Many quality knife manufacturers use both types of steel in their offerings, so it's important to remember that both are good choices for toughness, wear and edge retention. No one type of steel is right for every knife, and by fully understanding the differences between popular types of steel, you'll be better able to make the right decision for your next big knife purchase. This Zero Tolerance knife is made in the USA. The answer depends on what you'll be primarily using the knife for. That’s part of why it’s so highly regarded, in the first place. Yeah, you can also add CTS-204P to that club. Your own use of the blade will determine which one is slightly better for your needs. (Carbides are hard particles comprised of carbon alloys in the steel matrix that indicate toughness and wear resistance but can be brittle in the wrong combinations. Along with CTS XHP, these include CTS 204P, CTS B70P, CTS B75P, CTS BD1, CTS BD30P, CTS 204P, CTS 20CP, and CTS 40CP. All of the steels run sub $200, the kydex sheathes from Bradford are nice too and I would recommend them often the leather ones. The original SOCOM has remained a highly popular folding knife since its inception in 1996. How Are The Two Steels Similar? All-Around: M390, CTS-204P, and CPM-20CV. S35VN is as tough on longitude as 420C (the hardest stainless steel), but five times tougher on transverse so it won't chip or break. This ZT flipper design comes acclaimed designer Dmitry Sinkevich. Carpenter CTS-204P is a powder metallurgy stainless steel. (Carbides are hard particles comprised of carbon alloys in the steel matrix that indicate toughness and wear resistance but can be brittle in the wrong combinations. CPM S35VN is made with 14% chromium to maximize stain resistance and corrosion without giving up too much toughness. Hardness Ability. Adding molybdenum increases the strength needed to hold the edge over time, and the added tungsten also helps keep the edge. Which is bull, anybody who knows anything about knives will tell you a quality fixed blade is inherently sturdier than a folder, since there's no lock to fail on you. Indistinguishable from the same brand as a user for me, but different when you go from Spyderco to Hinderer to ZT. Reply. From an elemental perspective, the two … The PM process combined with the high chromium content imparts M390 / CPM 20CV with good grindability and excellent polishability. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Hey all, this is my first post, though I've been lurking around for awhile now. I would recommend keeping your M4 blades with a thin coat of oil on them when not in use to prevent them from corroding. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. On the surface, the blade itself looks identical to that found on the original models. CPM-20CV is Crucible’s version of Bohler’s popular M390 steel which also influenced Carpenter to copycat with CTS-204P. New comments cannot be posted and votes cannot be cast, Press J to jump to the feed. HRC | 58-61 | 59-61 When choosing between CPM S35VN and CPM 20CV, the first question to ask is whether you value toughness, or the blade's ability to keep from breaking, over edge retention, or the blade's ability to stay sharp. In a smaller blade, like an everyday carry folder, 20CV is tough enough for most uses. For that matter, most of the steels like Cruwear, K390, etc, derive reputations from being stable at high hardness. The CATRA test, which measures the sharpness and edge life of a blade by comparing it to 440C, rates CPM 20CV 180% better. Niobium | 0.5% | 0 It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. The composition is almost identical to Bohler M390. CPM S35VN hasn't been around all that long -- it originated in 2009 as Crucible Industries' attempt to improve on their previous top steel, CPM S30V. Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. It is made up of 1.9% carbon, 20% chromium, 4% vanadium, 1% molybdenum and 0.6% tungsten. Higher chromium amounts allows some of the metal to form a protective, passive film of chromium oxide that repels rust and prevents staining. Molybdenum | 2% | 1% I have all 3 from the same brand (20cv and m390 PM2, 204p Military; and m390 and 20cv from Hinderer or ZT). CTS-204P/CPM-20CV/Bohler M390 (Same steel, different companies, imo the best balance of edge retention, toughness, and stainless without compromising anything, it really doesn't get better than this. Just a great compromise of wear resistance, … Still 20cv is supposed to be a good steel. You are viewing 20CV. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. But my employer frowns upon fixed blades because they're "more likely to be used violently or injure you on accident". Edge Retention. The combination of carbides in CPM 20CV makes the blade tough, but not as resistant to breakage or chipping as other premium steels. Of the three PM2's I have had, it was the only one out of the box that the knife was just flawless in every aspect. 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. Both CPM S35VN and CPM 20CV contain vanadium, which is valued for its ability to create a finer grain in the steel that typically improves its ability to hold an edge. Like to force the patina with the high chromium content imparts M390 / CPM 20CV with grindability. 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