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. 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. Comparing: CPM S35VN vs. CPM 20CV. In a smaller blade, like an everyday carry folder, 20CV is tough enough for most uses. M390 vs 20CV vs 204P - 3rd Generation Powder Metallurgy. It stays sharp for a long time, is stainless and extremely hard. Introduction to CPM S35VN Yeah, you can also add CTS-204P to that club. Press question mark to learn the rest of the keyboard shortcuts. Edge Retention. 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 … Source: Knife Steel Nerds. Edge Retention. Stainless/Corrosion Resistance. I have all 3 from the same brand (20cv and m390 PM2, 204p Military; and m390 and 20cv from Hinderer or ZT). CTS-204P. For that matter, most of the steels like Cruwear, K390, etc, derive reputations from being stable at high hardness. Data Sheets: 20CV Data Sheet CTS-204P Data Sheet M390 Data Sheet Many others have reported theirs being top notch in everyway also. Like you said, m390 and 204p (and also 20CV) are basically identical Scales are one thing, but let’s discuss the business end. This puts them comfortably in the middle-to-high-end of the hardness range for premium knife steels. Higher chromium amounts allows some of the metal to form a protective, passive film of chromium oxide that repels rust and prevents staining. CPM S35VN is made with 14% chromium to maximize stain resistance and corrosion without giving up too much toughness. CPM 20CV Steel is Crucible’s answer to Bohler’s M390 stainless steel. CPM 20CV is a steel created by Crucible to be excellent at resisting wear and corrosion, balanced with good toughness. 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]. This ZT flipper design comes acclaimed designer Dmitry Sinkevich. The CATRA test measures the sharpness and edge life of a blade by comparing it to 440C; CPM S35VN is 145% better. The CATRA test, which measures the sharpness and edge life of a blade by comparing it to 440C, rates CPM 20CV 180% better. 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. CPM 20CV is one of the best steels for retaining an edge. It is made up of 1.9% carbon, 20% chromium, 4% vanadium, 1% molybdenum and 0.6% tungsten. 7 thoughts on “M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology?” andre says: April 1, 2020 at 8:55 pm Very interesting insight into pm steels… one question, the appearance of 20cv and m390 microgaphs… It looks like there are a larger amount of smaller carbides as well as the ones that are … On the Rockwell Hardness scale, CPM S35VN rates 58-61 HRC. 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. Chromium is what gives steel its ability to resist corrosion, but it is less tough and wear resistant than other metals. 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. Your own use of the blade will determine which one is slightly better for your needs. On the Rockwell Hardness scale, CPM S35VN rates 58-61 HRC. The CATRA test, which measures the sharpness and edge life of a blade by comparing it to 440C, rates CPM 20CV 180% better. Just a great compromise of wear resistance, … 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. M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Both have exceptional edge retention, though I'd say m390/20cv/204p out lasts it from what I've seen in all the independent tests. Seems Spyderco just nailed that run. The addition of molybdenum increases the material's strength to properly hold the edge. For more info check Duratech 20CV … That’s part of why it’s so highly regarded, in the first place. If you’re looking for all all-around best knife steel, you’d be hard-pressed to find one better than Bohler Uddeholm M390. CHART 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. The combination of carbides in CPM 20CV makes the blade tough, but not as resistant to breakage or chipping as other premium steels. Spyderco planned its initial use of CTS XHP in the creation of a 5.3-ounce knife with a 3.13-inch skinner blade. CPM 20CV is one of the best steels for retaining an edge. 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. 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. CTS-204p which I have, out performed M390 by some degree in Jim Ankerson's edge retension testing. 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. Indistinguishable from the same brand as a user for me, but different when you go from Spyderco to Hinderer to ZT. Another consideration is corrosion. Zero Tolerance, Chris Reeve and Hinderer all make several popular models with S35VN blades. 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. Hardness Ability. Edge retention testing is continuing, we have now tested 18 different steels, and four of those steels with multiple heat treatments. If you'll be using a larger blade or need something that will work for frequent, heavy duty tasks, the toughness of the S35VN may make it a better choice. Ive only ever had 154cm and S30V from benchmade, and many other steels from different manufacturers, but I"ve never heard of M4 or 20CV. SOG then released the Team Leader model in Duratech 20CV. 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. Adding molybdenum increases the strength needed to hold the edge over time, and the added tungsten also helps keep the edge. These facts alone should tell you something. This powder metallurgy metal features vanadium-rich carbides for top use level of … If you’re looking for all all-around best knife steel, you’d be hard-pressed to find one better than Bohler Uddeholm M390. Molybdenum helps to prevent the pitting type of corrosion by lending the steel more strength. I wrote an article describing the difference in process between different powder metallurgy production companies making knife steels. 20cv is an improvement in my opinion. CPM stands for, “Crucible Particle Metallurgy” and is one of the single most coveted stainless “super steels” … 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. They're all corrosion resistant steels aimed at toughness and edge retention. Too common to be called "Hype". 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. This Zero Tolerance knife is made in the USA. Corrosion Resistance (out of 5) | 3.5 | 4. 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. Spyderco Paramilitary 2 Tan G-10 - 20CV Blade. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. 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. Molybdenum helps to prevent the pitting type of corrosion by lending the steel more strength. The downside is that 20CV can be extremely challenging to properly sharpen. I say go for it. The CATRA test measures the sharpness and edge life of a blade by comparing it to 440C; CPM S35VN is 145% better. Hardness Ability. The 20CV stainless steel retains sharpness extremely well and is … Another consideration is corrosion. sam says. The 0456 offers the premium cutting power for which ZT is well known in a knife with standout looks that are just waiting to be shown off. Post by Larrin » Mon Mar 30, 2020 3:16 pm . Hardness Ability. It is highly wear resistant so it will hold an edge for a long time. Given a good process, the M390/20CV/204P family can be plenty edge-stable (read as: not chippy or prone to rolling) at 62-64 hrc. CPM 20CV-steel. 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. Edge Retention. 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 levels of … This puts them comfortably in the middle-to-high-end of the hardness range for premium knife steels. For a heavy-on-the-science look at carbides, visit Knife Steel Nerds). It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Niobium | 0.5% | 0 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. Knifemaking & Materials M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Higher chromium amounts allows some of the metal to form a protective, passive film of chromium oxide that repels rust and prevents staining. Spyderco Paramilitary 2 Tan G-10 - 20CV Blade. The vanadium in the alloy works to create a fine grain structure that helps hold an edge. Zero Tolerance and Belarusian custom knife maker Dmitry Sinkevich have teamed up to produce the 0456. Comparing: CPM S35VN vs. CPM 20CV. It is one of the most coveted steels of the moment. They're all corrosion resistant steels aimed at toughness and edge retention. CPM-20CV is Crucible’s version of Bohler’s popular M390 steel which also influenced Carpenter to copycat with CTS-204P. I think 20cv has a very slight chemical composition difference and the powder technology is not as refined as m390. The ZT 0562CF is a sturdy folding knife that features a carbon fiber handle and CPM-20CV blade steel. The Griptillian has a CPM 20CV-steel blade. Your own use of the blade will determine which one is slightly better for your needs. -- | CPM S35VN Steel | CPM 20CV Crucible's goal was to create an even tougher steel that didn't sacrifice resistance to corrosion, and they did that by using niobium carbides in place of some of S30V's vanadium carbides. Stainless/Corrosion Resistance. For a heavy-on-the-science look at carbides, visit Knife Steel Nerds). 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. Carpenter CTS-204P is a powder metallurgy stainless steel. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Toughness (out of 5) | 4 | 3 Zero Tolerance: 0456 - Sinkevich Design Please note: our remaining stock is in the CPM-20CV blade steel (formerly listed as CTS-204P). You won’t have any regrets! That’s part of why it’s so highly regarded, in the first place. Given a good process, the M390/20CV/204P family can be plenty edge-stable (read as: not chippy or prone to rolling) at 62-64 hrc. If you'll be using a larger blade or need something that will work for frequent, heavy duty tasks, the toughness of the S35VN may make it a better choice. HRC | 58-61 | 59-61 � According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. 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. CPM 20CV(Latrobe) - Recently appeared in Latrobe steel listings, and coincidentally, Duratech 20CV steel has disappeared form the same listing, composition is 100% identical though, apparently just the technology changed to CPM. And thanks for the info. Introduction to CPM 20CV It's low maintenance and great at absolutely everything) M4 is not stainless, but it is tougher than the rest. Come to Patreon if you want updates on testing as it is … S35VN is a tougher steel, but falls short of 20CV in edge retention. This Griptillian has a blade of CPM 20CV-steel. Stainless/Corrosion Resistance. The finished S35VN steel is made of 1.4% carbon, 14% chromium, 3% vanadium, 2% molybdenum and 0.5% niobium. How Are The Two Steels Similar? To the compare by cts 204p vs m390 now the described the cts 204p.The nearly four-inch blade is created of fine-grained CTS 204P, a challenging, use and deterioration proof metal ready for hard-duty. Zero Tolerance, Chris Reeve and Hinderer all make several popular models with S35VN blades. S35VN is a tougher steel, but falls short of 20CV in edge retention. Zero Tolerance: 0456 - Sinkevich Design Please note: our remaining stock is in the CPM-20CV blade steel (formerly listed as CTS-204P). CPM 20CV Stahl ist die Antwort von Crucible Industries auf den Edelstahl M390 von Böhler.Er half Carpenter auch bei der Entwicklung des sehr ähnlichen CTS-204P.. Diese Fakten allein sollten dem Messerliebhaber schon eine Menge sagen. Reply. For use in a marine environment or other area where corrosion is a concern, the 20CV with its higher chromium content will resist rust and staining better than the S35VN steel. Edge Retention. The composition is almost identical to Bohler M390. Zero Tolerance Knives (ZT Knives) is a big name in the knife world, delivering an amazing line of high-quality, hard-use knives that are popular amongst law enforcement, military, and civilian knife users. CPM steht für “Crucible Particle Metallurgy” und ist einer der beliebtesten rostfreien … 20CV and M390 are shown in the table above for comparison purposes. CPM 20CV is a martensitic steel, which refers to its hard crystalline structure with lens-shaped or lenticular grains. Could be mistaken though. New comments cannot be posted and votes cannot be cast, Press J to jump to the feed. The original SOCOM has remained a highly popular folding knife since its inception in 1996. The two steels also have a similar hardness profile on the Rockwell scale - up to 61. CTS-204p is a fantastic super steel and the Paramilitary 2 is probably the highest performing folder for the money. This premium "super steel" is used in many Benchmade knives and several Hinderer and Zero Tolerance models. That's where m4 shines. The downside is that 20CV can be extremely challenging to properly sharpen. With significant amounts of Chromium, Molybdenum, Vanadium, and Tungsten, these steels are 100% ready for action. Martensite forms when austenite cools so quickly that … Adding molybdenum increases the strength needed to hold the edge over time, and the added tungsten also helps keep the edge. Too common to be called "Hype". The answer depends on what you'll be primarily using the knife for. CTS 204p Vs M390 CTS 204p. I have an esee izula for that, great little blade. It is made up of 1.9% carbon, 20% chromium, 4% vanadium, 1% molybdenum and 0.6% tungsten. Just a great compromise of wear resistance, toughness and corrosion resistance. I also did experiments to analyze the different products including carbide size, impurity levels, and inclusions. It also helped Carpenter to create CTS-204P, which is also quite similar. Its high austenizing … CPM 20CV-steel. From an elemental perspective, the two … Toughness. Crucible achieved the balance by combining a vanadium for edge retention with a high percentage of chromium. If it doesn’t have to be a folder I would recommend the Bradford guardian3, a small fixed blade that can be found in various steels like N690, M390 and vanadis 4E. Worth $200 bucks for a custom knife in 20CV then? Vanadium | 3% | 4% Hardness Ability. I dunno about you, but I can absolutely tell the difference in cutting ability between my Kershaw cryo (8cr13mov) and my sog … Chromium | 14% | 20% Crucible's goal was to create an even tougher steel that didn't sacrifice resistance to corrosion, and they did that by using niobium carbides in place of some of S30V's vanadium carbides. Which One is Better? Knife makers tend to love CPM S35VN, so if you've spent any time on knife forums, you're probably familiar with it -- or at least have heard about it in passing. But the question I have is which steel would you recommend? Made by @Crucible CPM 20CV is a martensitic stainless steel high in Vanadium, Chromium, and Carbon for excellent wear resistance and corrosion resistance, it’s used for plastic injection feed screws, barrel liners, screw tips, mold cavities, and premium Knives.. Chromium is what gives steel its ability to resist corrosion, but it is less tough and wear resistant than other metals. Latrobe was purchased by Carpenter in 2011 [13] though Carpenter continued to sell their CTS-204P. All-Around: M390, CTS-204P, and CPM-20CV. (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 hasn't been around all that long -- it originated in 2009 as Crucible Industries' attempt to improve on their previous top steel, CPM S30V. They're all corrosion resistant steels aimed at toughness and edge retention. Made by @Crucible CPM 20CV is a martensitic stainless steel high in Vanadium, Chromium, and Carbon for excellent wear resistance and corrosion resistance, it’s used for plastic injection feed screws, barrel liners, screw tips, mold cavities, and premium Knives.. The higher percentage of vanadium in this steel creates a fine grain structure to better hold an edge. The m390 0562cf's are more expensive than the 204p version because they're more rare. Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. On the surface, the blade itself looks identical to that found on the original models. Tungsten | 0 | 0.6%. Stainless/Corrosion Resistance. CPM 20CV is a steel created by Crucible to be excellent at resisting wear and corrosion, balanced with good toughness. The two steels also have a similar hardness profile on the Rockwell scale - up to 61. You are viewing 20CV. All of the steels run sub $200, the kydex sheathes from Bradford are nice too and I would recommend them often the leather ones. Crucible achieved the balance by combining a vanadium for edge retention with a high percentage of chromium. Latrobe was purchased by Carpenter in 2011 [13] though Carpenter continued to sell their CTS-204P. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. CPM S35VN is made with 14% chromium to maximize stain resistance and corrosion without giving up too much toughness. On the Rockwell Hardness scale, CPM S35VN rates 59-61 HRC. All-Around: M390, CTS-204P, and CPM-20CV. Corrosion Resistance (out of 5) | 3.5 | 4 (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. ... Because the older run of the knife was with CTS-204P I called the company prior to purchase because I really wanted the CPM-20 CV. It's comparable to Bohler's M390 stainless steel or Carpenter's CTS-204P and, like those alloys, takes a mirrored finish well. Knife makers tend to love CPM S35VN, so if you've spent any time on knife forums, you're probably familiar with it -- or at least have heard about it in passing. I decided to pull the trigger on a custom benchmade griptillian, with a drop point blade. Winkler Highland Hatchet - Curly Oak Tomahawk, Chris Reeve Large Sebenza 21 Tanto - Micarta Inlay Folding Knife, Kurt Merriken Custom 3" Phantom San Mai Damascus, Brian Tighe - Tighe Down Integral - RWL34 & Carbon Fiber Inlay, Hinderer Extreme Duty Pen Copper - EDP Tactical Pen, Tuff Writer Precision Press Flamed Titanium Tactical Pen. Toughness. Still 20cv is supposed to be a good steel. Edge retention testing is continuing, we have now tested 18 different steels, and four of those steels with … Not sure yet on designs and colors. 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. The addition of niobium makes CPM S35VN about 15% to 20% tougher than CPM S30V without giving up any durability. Zero Tolerance and Belarusian custom knife maker Dmitry Sinkevich have teamed up to produce the 0456. The addition of molybdenum increases the material's strength to properly hold the edge. There are only a few hundred of the m390 0562s out there. I have a knife with m390 and love this steel 204p and 20cv are supposed to be US versions of bohlers m390. The remainder of the knife’s materials also consisted of Carpenter steels, including a … Toughness. Despite the good edge retention, S35VN can be a bit difficult to sharpen. At lower Rockwell's 20cv can be tough but not really at 60-62hrc. For that matter, most of the steels like Cruwear, K390, etc, derive reputations from being stable at high hardness. Along with CTS XHP, these include CTS 204P, CTS B70P, CTS B75P, CTS BD1, CTS BD30P, CTS 204P, CTS 20CP, and CTS 40CP. Carbon | 1.4% | 1.9% Knifemaking & Materials M390 vs 20CV vs 204P – 3rd Generation Powder Metallurgy Technology? Both m4 and 20cv are superior in the edge retention department compared to 154cm and s30v. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. Indistinguishable from the same brand as a user for me, but different when you go from Spyderco to Hinderer to ZT. SOG then released the Team Leader model in Duratech 20CV. The knife was originally in m390 but they switched to 204p because they were having problems getting m390. 20cv will hold an edge the longest, so if you don’t plan on beating on the thing I would go with that. This grade is equal to CTS-204P and Böhler M390 steel. Toughness. 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]. The answer depends on what you'll be primarily using the knife for. Molybdenum | 2% | 1% The combination of carbides in CPM 20CV makes the blade tough, but not as resistant to breakage or chipping as other premium steels. I have all 3 from the same brand (20cv and m390 PM2, 204p Military; and m390 and 20cv from Hinderer or ZT). This premium "super steel" is used in many Benchmade knives and several Hinderer and Zero Tolerance models. November 22, 2014 at 7:56 pm. So we can understand more the Steel, let’s see its chemical … The 0456 folding knife blade is constructed of USA-made CPM-20CV … For use in a marine environment or other area where corrosion is a concern, the 20CV with its higher chromium content will resist rust and staining better than the S35VN steel. 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. The addition of molybdenum also helps to keep away corrosion, specifically the type that causes pitting in the steel. It is one of the most coveted steel types of the moment. According to some manufacturers and knife makers, the 20CV is the best of the three at holding an edge. Choosing the best steel for your everyday carry knife or another blade that you'll be relying on for a specific task can require some research. It is a bit trickier to sharpen (we recommend diamond stones) but once it is sharp it stays … Choosing the best steel for your everyday carry knife or another blade that you'll be relying on for a specific task can require some research. How is the corrosion resistance on 20cv? The PM process combined with the high chromium content imparts M390 / CPM 20CV with good grindability and excellent polishability. 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 … The finished S35VN steel is made of 1.4% carbon, 14% chromium, 3% vanadium, 2% molybdenum and 0.5% niobium. Benchmade has a really nice section on all their blade steels in the back if their catalogue, you can get a free pdf from their website. The only m4 I generally see tested is from Benchmade or spyderco, some custom makers take it to a higher Rockwell. 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. On the Rockwell Hardness scale, CPM S35VN rates 59-61 HRC. Yeah, you can also add CTS-204P to that club. 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. Hey all, this is my first post, though I've been lurking around for awhile now. Yeah, you can also add CTS-204P to that club. Been lots of talk about M390/20CV/204P, about there HRC, about how HRC is relevant to edge retention, and how relevant my … Despite the good edge retention, S35VN can be a bit difficult to sharpen. Composition Comparison Graph For The Knife Steels Carpenter CTS-204P, Latrobe DuraTech 20CV, Bohler-Uddeholm M390 Version 4.36 CPM 20CV Steel Introduction. One of the top tier steels you’d want on a nice knife. The higher percentage of vanadium in this steel creates a fine grain structure to better hold an edge. But my employer frowns upon fixed blades because they're "more likely to be used violently or injure you on accident". 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 is Crucible’s version of Bohler’s popular M390 steel which also influenced Carpenter to copycat with CTS-204P.. 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 levels of chromium. Be first to receive news about sales, coupons & new promotions. So we can understand more the Steel, let’s see its chemical composition. CTS-204P is made by the USA-based Carpenter Technology Corporation and CPM-20CV … Unless of course, you would like to force the patina. The addition of molybdenum also helps to keep away corrosion, specifically the type that causes pitting in the steel. interestingly, Crucible doesn't list CPM 20CV steel on their website. The addition of niobium makes CPM S35VN about 15% to 20% tougher than CPM S30V without giving up any durability. This steel type is equal to CTS-204P and Böhler M390-steel. In a smaller blade, like an everyday carry folder, 20CV is tough enough for most uses. 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. The vanadium in the alloy works to create a fine grain structure that helps hold an edge. The 0456 offers the premium cutting power for which ZT is well known in a … Edge Retention (out of 5) | 4 | 5 March 31, 2020. 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. The SOCOM Elite® Manual sets the standard for tactical/utility cutlery. I would recommend keeping your M4 blades with a thin coat of oil on them when not in use to prevent them from corroding.
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