St-Etienne. and it does not go particularly well. The solution of the authors above is just to fill in numbers where they don’t know them. Those alloying elements lead to the precipitation of very tiny carbides that increase hardness in the high temperature tempering range. cobalt is not just very expensive , it is also known for its carcinogenic effect in presence of tungsten & all cobalt alloyed steels contain tungsten ! However, the use of PM technology allowed an increase in vanadium content. The answer is that S110V doesn’t get harder than 1075 because it has to do with how much carbon is in solution during the high temperature hardening/austenitizing treatment and must be balanced with all of the other elements in the steel. Yes, As you might know, the term toughness mainly associated with mechanical components and machines. So, REX 121 is a very hard steel, but it’s not so tough. For example, A2 and 3V, non-stainless tool steels, get the same score of “3” out of 5 as CPM-154 and VG-10 which are stainless steels and obviously are superior in terms of corrosion resistance. These predicted values would of course need to be experimentally validated. With steel element explanations and steel type descriptions that are straight up wrong, plagiarism from Cold Steel (that was assigned to the wrong steel), and plagiarized ratings I can’t recommend this article at all. Mo and W form the same kind of carbide on tempering so you can have one or the other or a combination of the two. The primary difference is out-of-this-world edge retention at the cost of a minimal reduction in toughness. 66% Score of Average of Top 5: 251; closest steel is CTS-XHP at 242 After all, they are designed to be heat treated to at least 67 Rc. [25] Maili, I., R. Rabitsch, W. Liebfahrt, H. Makovec, and E. Putzgruber. Купити Ніж Spyderco Manix 2 Maxamet Steel (C101PGY2) 871320 в інтернет-магазині ІБІС - найкраща ціна в Україні - 6530 грн. That seems like enough examples of poor ratings of steel. Your email address will not be published. Tool steel grades used in cutlery : A, D, O, M, T, S, L, W. See also AISI Tool Steel Grades. If you frequently use your knife to slice up cardboard, there may not be a better steel than CPM-S110V. Maxamet steel version of the Manix 2 with gray FRCP handle. The development of super hard and carbide replacement high speed steels came from a long history of continuous improvement in high speed steel design and production. I have rated their articles based on my own experiences, steel datasheets, and how I feel this morning. Deductive reasoning, almost like SCIENCE. Spyderco’s twenty-fourth Mule Team installment features Carpenter® steel's Micro-Melt® Maxamet® alloy—a super-hard high-speed powdered tool steel possessing properties that transcend conventional high-speed tool steels approach those of cemented carbides, the ultra-hard materials used to machine other steels. However, Rex 121 is at an even higher level of insanity in terms of wear resistance and would be expected to be another notch higher. Trans Tech Publications, 2007. But before we get to what exactly these steels are and how they work, it makes sense to look at what led to their development first. He next defines the effect of different alloying elements in steel. This expression of the Para 3 combines all the defining qualities of this best-in-class folding knife design with the extreme edge retention and toughness of Maxamet blade steel. This Para 3 features all the characteristics of the best-selling standard model, plus the supercharged edge holding and toughness of a Maxamet blade. With the introduction of powder metallurgy it was possible to increase the vanadium content to offer a combination of very high wear resistance and hardness. Corrosion resistance is expected to be similar to other high speed steels. Crucible researchers used … Same old , same old ! “420HC is a somewhat less expensive American-made stainless alternative to 440C. S110V gets only a “6” for corrosion resistance despite the steel being designed for high corrosion resistance. There was a rumor about a new Maxamet PM2 release this year. This steel combined 3% vanadium along with high carbon and cobalt to achieve these properties. One of my favorites “ D2 is a very tough steel” Micro-Melt Maxamet Steel: Produced by Carpenter as a high speed tool steel, Maxamet offers extremely high wear resistance with moderate toughness and a high level of hardness (67-69 Hrc). Where would Rex 45 fit into these steels?? So it was a good upgrade overall due to decreased cost and improved properties. He has some very pretty charts summarizing the ratings of all of the steels, which I have reproduced below: If you compare the ratings above with those from the Knife Informer ratings you will notice that they are nearly identical. This steel was eventually called ASP2060 by Erasteel and Vanadis 60 by Uddeholm. However, there are still easy things to point out in most of these, first here are the ratings themselves: 1050 gets a “1” for corrosion resistance while 1075 and 1060 get a “0” which he says is “because of the lower carbon content,” which wouldn’t make any difference in a steel with no chromium. The Manix 2 LW in Maxamet changed that, delivering the steel in a utility-driven design for less than $200. He finishes out the article by describing Maxamet and CruWear but says that Maxamet is Carpenter’s answer to S110V. Like all CPM steels, CPM M4 is created using Crucible’s patented Crucible Particle Metallurgy process, which provides an extremely homogeneous, stable and grindable product compared to the traditional processes. O1 is not well known for being differentially heat treated, as it has relatively high “hardenability” which is a measure of how quickly it has to be quenched to achieve full hardness. The edge retention of 3V is too high at 4.5 out of 5 whereas D2 gets only a “3” despite the two getting a similar result in Bohler-Uddeholm CATRA testing [1]. Early PM high speed steels were simply taking existing compositions and producing PM versions of them, such as M2, M42, and T15. “Elmax – A third generation Austrian, powder-metal stainless steel that is noted for its fine carbide distribution with extremely low inclusion content.”, “O-1 is an ideal steel for edged weapons and tools because it is known for its ability to be differentially heat treated.”. [19] Makovec, Heinz, Ingrid Schemmel, and Ernst Putzgruber. Prioritize toughness for rigid prints. 1. At these elevated temperatures, alloying elements are able to move around in the steel, or diffuse. Could you provide a small table with some ‘simple’ choices, say… a recommended steel for ‘very low use, EDC to the office, open mail and slice fruit’, one for ‘general use around the house and garden, doing things with the blade, that shouldn’t be done with a blade (but the appropriate tool)’ and perhaps one for ‘backcountry, hard use, wet, beat up and put to use like a tool should be’, “I would say if it’s not broken it remains usable. Top Rated Plus. However, the toughness of cemented carbide is very low and the cost is high. I’m planning to make a gyuto out of HSS, but can’t decide between the selection that’s available. It was eventually supplanted by M2 which has a combination of both molybdenum and tungsten, as well as more vanadium than T1 (2% vs 1%). They are especially critical in survival situations. Nice article! I’d like an opinion on the graphs there. Compare T1 and T4 in the image below, for example, where T4 is identical to T1 but with 5% cobalt. 3, p. 1. These can include replacement machinery parts, toys, hinges, or outdoor signs. “PM Tool Materials: New PM Steel Grade S290 Microclean-the Bridge Material between Usual PM Grades and Cemented Carbides.” In European Congress and Exhibition on Powder Metallurgy. [2] Emmons, Joseph V. “Steel alloy and articles made therefrom.” U.S. Patent 1,937,334, issued November 28, 1933. To further distinguish it, its textured G10 scales are a distinctive dark gray color. 2002. The move to M2 was necessitated by tungsten shortages in WWII and the Korean War but it was also discovered that M2 had higher toughness, wear resistance, and potential hardness than T1. Spyderco was one of the only companies to successfully machine, heat treat and grind this advanced alloy for use in high-performance knife blades. Crucible Steel initially argued that higher than 3% was unnecessary and not found to be beneficial [17]; however, the continued existence of ASP60 and the development of higher vanadium high speed steels by Crucible since seem to contradict their initial arguments. We only need a few more for 150 supporters! Maxamet is a complex steel alloy that offers unprecedented toughness and edge retention. I appreciate both the mention and the analysis. [1] This Bohler-Uddeholm CATRA data is no longer available on the bucorp website. the toughness of silicon alloyed steel is also higher than the cobalt alloyed steel although higher hardness !! Steel is really the essence of the blade and primarily responsible for how the knife performs.” I think edge geometry and design is primarily responsible for how the knife performs not the steel, but maybe Matt is using hyperbole since this particular article is on steel. [17] Kasak, A., and E. J. Dulis. Sort by: Spyderco Manix 2 C101PGY2 Folding Knife, 3.375" Plain Edge Maxamet Blade, Gray FRCP Handle. However, he also says that, “Many people report that they are able to get knives using steels that contain vanadium such as CPM S30V sharper than they can non-Vanadium steels such as ATS-34.” I’m not sure I’ve heard anyone report that before, as the hard vanadium carbides typically make sharpening more difficult. Even where I criticize the articles that does not necessarily mean that I think the author is clueless, or that none of the articles are worth reading, or that they don’t regularly call their mothers like good boys should. - Duration: 12:29. Steel Chart. After that it will be interesting to test the edge stability and toughness with more controlled destructive edge testing. This will allow us to study the effects of steel, heat treatment, edge geometry, sharpness, etc. I don’t have any articles on how to determine steel toughness and edge retention, for example. Perhaps in the future Si will be explored more. To further distinguish it, its textured G10 scales are a distinctive dark gray color.

maxamet steel toughness

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