You will also see I have two compositions listed for S110V, one labeled “patent” and one labeled “final.” The initial version of S110V was modified leading to the version that we have today. S110V has a similar Mo content as well so it should still have better corrosion resistance than S45VN. Regardless, the development of S30V and S125V meant that Crucible metallurgists were well aware that Mo could improve corrosion resistance with the same level of chromium. $145.00. The pocket clip, like all PM2 and Para3 clips is just terrible. P'Kal™ G-10 Red Trainer. So the amount of Ni and Mn needs to be kept to relatively low levels so that a good combination of hardness and corrosion resistance can be obtained. You’ll pay for it though, at roughly 1.5x the price. Understand that a keen edge requires a dimension of around 100nm (1/10 of a micron) and the vanadium-rich carbides in Maxamet, or S110V, or even the chromium carbides in ZDP189 are 1-2 microns in size. Subscribe to our newsletter to get a free guide on ”your subject”. Furthermore, there is some chromium present in vanadium carbide, further reducing corrosion resistance. It's cool to carry a knife made from Maxamet, M390, or CPM-S110V. I tested S45VN in my 1% saltwater spray corrosion test. In Stock . When knife steel is heat treated you have to heat it to high temperature to “austenitize” the steel prior to quenching to transform the steel to hard martensite. So being conservative we would say that S90V is tougher than S110V which has higher toughness than S125V. According to Zknives, ZT had trouble grinding the Maxamet blades after heat treat, and experienced issues with warping if they ground the blades before heat treat. Get Up To 95% Off Today! If you’re looking for an EDC knife with a Maxamet Steel, the NATIVE 5 is your choice. S90V and S110V both offer superior carbide structure and toughness when compared with M398. I prefer the S35vn blah on the LW scales. What is its chemical composition? $265.00. However, an increase in both Cr and Mo means a significant improvement in corrosion resistance for S110V. Pacific Salt™ 2. So sharpening these knives to a keen edge with ceramic involves crushing those carbides (near the apex) into “nano-dust” and burnishing the matrix around them. The Spyderco Para Military 2 - What more needs to be said? A smaller amount of harder carbides (like vanadium carbide) gives a better combination of toughness and wear resistance. I will use “0888” and “0888MAX” interchangeably throughout this article except for when specifically discussing the steel below. Micro Melt Maxamet Alloy can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. the effect of cobalt on raising martensite start temperature inspires me an idea . The primary difference is out-of-this-world edge retention at the cost of a minimal reduction in toughness. In my original edge retention article I speculated that perhaps the smaller carbide size was the difference and I made some comparisons with the size of the abrasive particles used in the testing. My edge testing shows how various steels retain absolute sharpness at the fine cutting edge vs man made materials, in this case, fibrous rope. The same knives in S110V are listed about 30% cheaper than the Maxamet knives of the same model. $236.00. $305.00. S110V Steel is more balance compared to the Maxemet, as you can see, Maxamet offers extreme edge retention in the cost of other criteria. S110V is a powder metallurgy stainless tool steel with very high wear resistance. No matter for me. Below I have plotted the steel also in relation to other stainless steels along with a hardness-toughness trendline from S60V. As a rule, the harder the steel, the easier it breaks, so the Maxamet steel is very hard steel that can break very fast, but it’s tough enough to handle some beating, damaging work. Or maybe they thought it gave a bit more “factor of safety” to ensure full austenitization would be possible. $216.00. If the carbides form in the liquid they are much larger then if they form during solidification of the powder. Micro Melt Maxamet Alloy can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. my original corrosion resistance experiments. This choice comes down to how important corrosion resistance is to the application. One of the major changes that was being made to S110V when compared to S90V/S125V was the addition of niobium. and again adding fine carbides will adds to both hardness and edge resistance . Through over a month of consistent use, my Paramilitary 2 blade was still sharp enough to slice through phone book paper and stick against my thumbnail. With increased Cr in solution, but decreased Mo, it is not clear which version would have superior corrosion resistance. most of these carbides are of M6C type while only 1.7% by volume is vandium carbides . What austenitizing temperature did you use? This is exactly why I don’t evaluate production knives to compare steels. Spyderco ParaMilitary 2 Dark Gray G10 Stonewash Maxamet C81GPDGY2 . Von Gesichtsrasur war ja ausdrücklich nicht die Rede. This is not scientific, bit here goes. Native® 5 G-10 Dark Blue CPM S110V. CPM-S110V exhibits many of the same qualities as S90V. 154CM, dating back to around 1959, had 4% Mo though the Mo addition was to maintain hardness at higher temperatures in bearing applications, not necessarily improved corrosion resistance. I'm still curious to see a custom knife made out of Maxamet though. 1 year ago. maybe if alloyed with niobium carbide the hardness will be raised somewhat . Typically instead the steel designer increases the level of carbon to the point that the steel can be austenitized. The blade features a full-flat grind, a distal taper, and an understated wedge. Try as I might, I can’t get S110 to push cut paper at right angles. So there is a maximum amount of niobium that can be used before this happens, somewhere in the 3-4% range. Thanks to Aaron @ Gough Custom, Aaron McVay, Mark Scott, Jeffrey St. Claire, Grant Seim III, and saiiiiiii1 for becoming Knife Steel Nerds Patreon supporters! All of this in combination with the powder metallurgy technology gives S90V a relatively fine microstructure for good toughness along with high wear resistance from the high vanadium content. Read more about niobium additions in this article. I have asked current Crucible metallurgist Bob Skibitski as well as the main inventor on the patent, Alojz Kajinic, and neither knew why the change was made as they were not directly involved with it. The Griptilian is comfortable but it feels totally different in your hands versus the PM2. this should be called “super steel” . Auch von einer Ruinierung der Schneide kann nicht die Rede sein. Its an extreme alloy with insane hardness and tremendous edge retention while still retaining a reasonable amount of toughness but at the expense of corrosion resistance (it’s not stainless). If you frequently use your knife to slice up cardboard, there may not be a better steel than CPM-S110V. Matching 316 corrosion resistance while also reaching 60+ Rc would be very difficult even with cobalt. Here is the datasheet. I am glad that I bought this one. With that said, the difference between the 2 is that the 0888 is uncoated and comes with a composite S110V and 14C28N blade, while the 0888MAX is black DLC coated and approximately half of the 0888MAX knives feature Maxamet steel, and the other half have M390 steel bl… They have the same blade grinds, and they are heat treated and processed by the same manufacturer, of course. The reasoning and test results seem totally convincing, but I can imagine companies preferring to stick with the steel makers reccomended heat treatments. Aber persönliche Erfahrungen und eine Sammlung detaillierter Informationen zu S110V. Spyderco ParaMilitary 2 Dark Gray G10 Stonewash Maxamet C81GPDGY2 . All PM2s are great at EDC tasks. FYI the maxamet manix is a lightweight without liners and is pinned. Read all 5 Reviews » Paramilitary 2 Series. Spyderco Paramilitary 2 vs Benchmade Griptilian : It’s no secret the Griptilian is one of my favorites but overall the PM2 is simply a better knife. Your email address will not be published. Both are capable of very high levels of hardness. However, a full replacement of vanadium with niobium is difficult to do. Und das ist definitiv falsch. the results says that the retained austenite was only 7% . Although Maxamet isn't stainless, but at the same time Maxamet is tougher compared to Crucible CPM S110V steel, which can result in better edge holding ability, and cutting performance with the right geometry and heat treatment. CPM-S110V. A similar comparison was made in the patent, as 11% V is roughly equivalent to the V-Nb combination in S110V. S110V's data sheet mentions, for example, that it has better corrosion resistance than S90V. ... S110V. Manufacturing Technology - MM. This does not appear to be an issue of experimental variability as none of the tests performed on S110V resulted in as high values as the average result of S90V (each was tested 3 times). Making high corrosion resistance steels with high chromium in solution also leads to more retained austenite, as explained in this article on Vanax steel. I have 2 spydercos in 110 and maxamet as well, and they have crisp edges as well. My Native 5 in Maxamet is the only one of my 3 Native 5’s that I have had Rockwell tested and it came in at 67 HRC. The reduction in Nb may have led to the other changes in the steel. Native® 5 Salt® $186.00. Another benefit of a partial replacement of vanadium with niobium is that the carbide size is reduced. I used Jmatpro software to calculate a steel with the same compostion of 316 stainless steel : 18%Cr + 2%Mo but with replacement of nickel with only 5% cobalt and 0.5% carbon . The Spyderco Para Military 2 - What more needs to be said? Although Maxamet isn't stainless, but at the same time Maxamet is tougher compared to Crucible CPM S110V steel, which can result in better edge holding ability, and cutting performance with the right geometry and heat treatment. It’s was a belt for knives with a different chemical composition, it has a high volume of Tungsten and high in carbon which is revolutionary in the knife industry. Few steels can approach this level of hardness while remaining usable in cutlery applications. adding niobium carbide “if all regarding problems solved” to this steel can push hardness/edge retention to a very high numbers . S110V and M390/20CV/204P do have higher Cr in solution than S45VN. This was not necessarily a new discovery; it was long known in austenitic stainless steels that high Mo improved “pitting resistance,” and steels intended for seawater applications typically need high Mo. why didn’t just replace the nickel in 316 steel for example by cobalt to make such steel “hardenable” ? Para Military™ 2 Left Hand G-10 Black . So if you intend to use in humid environment, you better take care of your knife, other than that it’s a great steel of an EDC knife. For example, S30V had increased Mo over the earlier S90V/S60V for improved corrosion resistance, and that trend continued thereafter with other Crucible products. Wear Resistance: the wear resistance is excellent, due to the Tungsten, Vanadium, and Carbon, the Maxamet offers a great wear resistance. The Mule Team was set up with identical knife blade blank designs in different steels in an attempt to compare apples to apples when testing the knives. Und nach meinen Recherchen spricht einiges dafür, daß S110V zäher als S90V ist, also etwas weniger zu Ausbrüchen neigen sollte. $295.00. The Manix 2 LW is available at most retailers for around $80.00. (from my limited experience and the specific design goals for … $250.00. As mentioned in the niobium section, there are limits to niobium alloying with typical powder metallurgy steel production. To look at this difference I used ThermoCalc to estimate the amount of carbon, chromium, and molybdenum in solution with S90V, the patent version of S110V (2.8C-14Cr-9V-3.5Mo-3.5Nb-2Co), and then a modified version of S110V which has 11% V instead of 9%V-3.5%Nb (2.8C-14Cr-11V-3.5Mo-2Co). Your email address will not be published. Opus™ $218.00 SALE. Die Zähigkeit ist angemessen hoch, jedoch auf Kosten der Korrosionsbeständigkeit (nicht rostfrei). That article explores a lot of aspects about cobalt because there isn’t much of a good reason to be in VG10 at all. Elmax. In previous corrosion testing I performed, I found that the effect of Mo topped out at a certain level, but it would be surprising if Crucible also came to a similar conclusion. Opus™ $218.00 SALE. Sharpness: Sharpening Maxamet steel, unfortunately, will be a hard task, it’s very hard steel, so sharpening won’t be easy, also for grinding if you’re a knife maker you won’t enjoy grinding Maxamet steel. Eine extreme Legierung mit unglaublichen Härtewerten und einer atemberaubenden Schnitthaltigkeit. Metallurgy and Testing of Knives and Steel. Perhaps they identified high Mo as an issue as well, such as difficulty in annealing or excessive hardenability leading to cracking during cooling after forging. In Stock . $230.00 . If they found a small amount of ferrite in S110V that would have contributed to the decision to increase Co, of course. Using the numbers 0.5% carbon and 18% Cr Ms is too low for avoiding excessive retained austenite. Yes, it does, it’s not a stainless steel Knife (It has only 4% of Chromium in it), so if you use it as a kitchen knife, hunting knife, or diving knife, make sure to take care of it to keep it in shape. Few steels can approach this level of hardness while remaining usable in cutlery applications. According to the chemical composition and the HRC of the Maxamet steel, it offers the following features: Edge Retention: With a hardness above 65HRC, due to the high amount of Tungsten, Vanadium, and Carbon, the Maxamet steel knife has the best edge retention. With S110V having quite a bit of each of those elements the steel cannot be fully hardened when it has no cobalt in it. I have a spreadsheet of all of the heat treatments I have done in the past along with ThermoCalc estimates of elements in solution. The s110v blade of this Manix 2 blurple is very very sharp so be careful with it. Not as sharp as steels like AUS8, but pretty sharp. These two factors mean that using niobium instead of vanadium can lead to a steel with high wear resistance from hard niobium carbides, while having high corrosion resistance because there is little interaction between chromium and niobium, leaving the chromium alone to contribute to corrosion resistance. Maxamet ist der neueste Pulverstahl von Carpenter (auch bekannt als CarTech). $217.00. The test produces a number for each steel of rope cuts made, so steels can be placed in a hierarchy where the interested person can get a decent idea of where one steel might sit against another. All of the following experiments were performed on the later version of S110V, as that is all that is available to purchase. If you find trouble understanding the meaning of hardness or HRC, here you can find a blog post explaining it. There is hardenable stainless steels with just 0.03% carbon . The Mule Team was set up with identical knife blade blank designs in different steels in an attempt to compare apples to apples when testing the knives. As you can notice, it has only 4.75% of Chromium, which means its not stainless steel, and it’s very high in Vanadium and Tungsten, which makes a tough alloy with excellent wear resistance. The obvious answer is Yes, its prey good for knives, especially if you’re looking for a knife with excellent edge retention and very high wear resistance, Maxamet is a “Super steel” for your knife, but it’s not a stainless steel, it has only 4% of chromium in it, so it’s not so great concerning corrosion resistance. S110V is essentially S90V with more C, Cr, Co, Mo, and Nb, and it is difficult to think of scenarios where adding more of those elements would lead to reduced edge retention. Para Military™ 2 G-10 Digital Camo. Buy Spyderco Native 5 Signature Folder Knife with 2.95" CPM S30V Black Steel Blade and Black FRN Handle - CombinationEdge - C41PSBBK5: Pocket Knives & Folding Knives - Amazon.com FREE DELIVERY possible on eligible purchases I didn’t mention clogging of the nozzle in this article as that is not the only issue. P'Kal™ G-10 Black. I previously wrote about cobalt additions in this article about VG10. And other questions). I have the Maxamet LW version, the pink S30v, the Satin blade natural G10 with M4, and the original (discontinued) G10 with liners and S35vn. This behavior was seen with M390 when austenitizing too high. The matrix of high speed steels contains only between 0.4-0.6% C , so 0.5% C seems to be enough for reaching high hardness . This is the only example of using cobalt for this purpose in a stainless tool steel that I am aware of, and is one of the biggest innovations of S110V in my opinion. However, this steel has high hardness and corrosion resistance which can mean excess retained austenite which sometimes leads to inflated toughness values. If you are unfamiliar with the Para Military 2, this will help you get a better understanding of one of the most popular knife designs in the past 10 years. I imagine a steel combining the corrosion resistance of marine-grade 316 stainless steel with the edge resistance of M4 , 15V or even Rex121 in the near future . regarding the problem of formation of large carbide particles , isn’t ball milling considered the most effective way to refine the carbides down to optimum size for edge retention/toughness combination ? The Griptilian is comfortable but it feels totally different in your hands versus the PM2. This dimension of sharpenability strongly affects my choice of steels. So I was I the same position as you and did many kinds of research about the Maxamet steel, and I answered many questions that may be very useful for you (What is it? Spyderco Military Left Hand Black G10 Plain Edge Satin C36GPLE . CPM-S110V exhibits many of the same qualities as S90V. $200.00. I would estimate more like 0.3% carbon would be the limit with that much chromium. I was curious to have first hand experience with this steel. I tested two conditions of S110V, one austenitized at 2050 and another at 2150°F, with both tempered at 500°F. $160.00. there is no doubt that if all of these 10% carbides are vanadium or niobium carbides instead of mostly M6C carbides which are much softer the hardness will be increased slightly , while the edge resistance will be increased greatly and still retaining the same toughness . S30V is not in the same wear resistance class as the other steels, but the design of that steel may have influenced the others so I included it. I won’t buy S110 anymore even though I admit it is good on paper. If you’re interested in the Maxamet steel for your knife, and still have doubts, I would like to assure you that’s it’s a great steel for your knife, depending on your usage, its has an exceptional edge retention and excellent wear resistance, but it’s low on corrosion resistance, so if you’re an EDC user (you like to have a tactical knife on you, for opening boxes and canes or whatever your bare hands can’t handle) it’s a great knife for you! Native® 5 FRN Dark Blue CPM S110V. Spyderco Native 5 Lightweight Dunkelblau Klappmesser Taschenmesser C41PDBL5 CPM-S110V 4,4 von 5 ... vs the Sage 5, but not enough to stick with the lock back. Para™ 3 G-10 Dark Gray Maxamet. I find the same edge retention results as Larrin, the S90V edge retention is better than the S110V. I use very high temperature of 1220°C (2228°F) to ensure all carbides are all dissolved . The results can be seen below. Because niobium is a strong carbide former, it wants to form carbides at very high temperatures, often in the liquid steel. Become a patron and gain access to awesome rewards including early access to articles or a Knife Steel Nerds mug! If you frequently use your knife to slice up cardboard, there may not be a better steel than CPM-S110V. With S110 you have to battle burrs just like S30. But not S110. According to @Cartech, the Maxamet has a maximum hardness of 70HRC. These heat treatments all included a cryo step after quenching. TWISTED SISAL MERCH - THANKS TO MISHEARDKNIFEREVIEWS: https://teespring.com/twisted-sisal-merch Remember to subscribe for more lunacy - hit the bell etc! 1 year ago. Maxamet is a powder steel from Carpenter, an American steel company. I tested S45VN in my 1% saltwater spray corrosion test. Go buy one for yourself, and everyone you know, as a Christmas present. But the chromium increase was more than was necessary to achieve a similar amount of chromium in solution (see the table below), and they also decreased the Mo content by a similar amount to how much the Cr was increased (from 3.5 to 2.25%), so the reason for that change is not completely clear to me. I did a large number of edge retention experiments which were summarized in this article, and I also added M398 which was discussed here. They have the same blade grinds, and they are heat treated and processed by the same manufacturer, of course. The cobalt content was increased from 2 to 2.5%, likely based on updated estimates of how much austenite stabilization is necessary after the changes to Nb, Cr, and Mo. Native® 5 FRN Pink. Same techniques and tools – DMT plates, ceramic rods, diamond paste strops. Manufacturing Technology - MM. If you ever wanted to own or buy a knife with excellent edge retention, I m sure someone already recommended the Maxamet steel as steel for your knife, and if you’re reading this blog post, it means you wish to know more about it. Native® FRN Grey Maxamet. I have 3 spyderco Native 5’s in S110V, S90V and in Maxamet. Native® 5 G-10 Black. All of the steels that you mention are great knife steels, and they all are super steels, they just are not quite a super as Maxamet.