M390. Your email address will not be published. >> See knives with M390 … I have previously shared a micrograph of Nitro-V that I took along with 41 other steels. Therefore the optimal austenitizing range for Nitro-V is 1900-1950°F because 1850°F leads to a reduction in both hardness and toughness and 2000°F led to excessive amounts of retained austenite. I recommend cryogenic processing for maximizing strength when heat treating. The 450°F temper led to a reduction in hardness and toughness, so it is not recommended. Buy Spyderco Manix 2 Lightweight Signature Folding Knife with 3.37" CTS BD1 Black Steel Blade and Black FRCP Handle - PlainEdge - C101PBBK2: Pocket Knives & Folding Knives - Amazon.com FREE DELIVERY possible on eligible purchases Presented by: Work Sharp Knife & Tool Sharpeners Hello and welcome: the Readers’ Choice Awards poll is open – check it out below! Pitting is particularly a problem in salt water. In Stock . Para™ 3 G-10 Dark Gray Maxamet. This shows how good Maxamet is at this one particular thing. CTS-XHP —A stainless, powdered steel from Carpenter that is becoming more popular with some knife companies and makers. Nice work. Maxamet’s distinguishing metallurgical characteristic is the high carbon content (2.15%) and the inclusion of 10% Tungsten. This significant increase in hardness means that Maxamet will be a very hard-wearing steel with off the charts edge retention. It has slightly lower toughness than AEB-L for unknown reasons. Spyderco’s opinion of the alloy is so favorable the company rushed to release the Maxamet Mule ahead of schedule. SALE* $339.95 $209.95 Both AEB-L and Nitro-V reach about 64 Rc, while 14C28N reached 63.5 Rc, though I didn’t austenitize high enough with 14C28N to see where the hardness begins to decline. The tradeoff is that those steels have much lower toughness than AEB-L and Nitro-V, of course. 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. I don’t normally use preheating as I only have one furnace so using a preheat ends up taking excessive amounts of time, preheating is to help with heating up the steel evenly to reduce warping and other issues. M390 hardens to 60-62 HRC. One question: you write that Nitro-V has “slightly” lower toughness than AEB-L, but if I read the graph right AEB-L has a toughness about a third greater at around HRC 61 (~33 ft-lbs vs ~22 for Nitro-V). Maybe you’ve had one… The steel was designed and produced in collaboration with Buderus Steel as a version of Uddeholm AEB-L modified with nitrogen and vanadium. Furhtermore, since AEB-L and Nitro-V have the same bulk Cr, to put more Cr in solution relative to AEB-L it would require a reduction in carbide content which would reduce wear resistance and slicing edge retention. Para™ 3 Lightweight Black Blade. Yesterday, Spyderco announced that the Maxamet Manix 2 will be available by the end of the month, and the Maxamet Native 5 by the end of the year. Nitro-V has a very fine microstructure and very good toughness when compared with other steels. Typically such small additions of vanadium are for the purpose of grain refinement in low alloy steels. The 300°F temper led to increased hardness with a reduction in toughness, as expected. If you are interested in trying out Maxamet but can’t wait for the Manix or Native, the MT24 is still available for purchase. The compositions of the two are similar and the micrographs also look very similar in terms of carbide content. Thor DS93X. $290.00 $203.00. When using a freezer instead of liquid nitrogen, the peak austenitizing temperature is usually reduced relative to liquid nitrogen treatments because the freezer is not as effective at reducing retained austenite. > > Keep your folders awesome. In Stock . Spyderco Para 3 Maxamet, S110V, M390 bonus LT Wright Bushcrafter HC. That said, S30V is a great steel! Peak hardness was achieved at 1950°F, and remained flat to 2000°F. It's cool to carry a knife made from Maxamet, M390, or CPM-S110V. The nitrogen addition, however, did not increase chromium in solution for enhanced corrosion resistance and the vanadium addition was insufficient for grain refinement according to simulation software. Spyderco Para Military 2 Knife. Required fields are marked *. 63-64 HRC. It is not intended for performance improvements and does not refine grain. 66% Score (below this but above 33% is a steel that scores a 1): 372 (66% of Maxamet's 563); CPM 10V at 389. Spyderco C101PGY2 Manix 2 Lightweight, 3.38" Maxamet Steel Plain Blade, Stone Gray FRN Handle. If they make a G10 maxamet I was unaware. I mostly carry a 154cm M390 or 20cv griptilian and never had a problem. Spyderco C101PBL2 Manix 2 Lightweight, 3.37" CTS BD-1,Translucent Blue FRCP Handle. Retained austenite in the right amounts can sometimes improve toughness, https://knifesteelnerds.com/2020/05/01/testing-the-edge-retention-of-48-knife-steels/. The peak hardness is limited by retained austenite rather than necessarily by how much carbon and nitrogen can be put in solution. Specs: Overall Length: 8.24" (209mm) The 1850°F austenitized led to reduced toughness relative to the 1900 and 1950°F conditions. WTS--Spyderco Mule blades (MAXAMET, K390, S110V, CTS-XHP and Cobalt Special) Prices reduced ... Not to be confused with the more popular M390, but has a great deal more edge retention. This high-performance alloy offers very high wear and corrosion resistance, yet remains extremely easy to sharpen and maintain. The peak austenitizing temperature of Nitro-V is a bit reduced relative to AEB-L. Nitrogen is typically added to steel in an attempt to improve hardness, corrosion resistance, or both. The similar peak hardness of Nitro-V and AEB-L may therefore indicate that the amount of chromium in solution is similar. You can read about why hardness is limited by retained austenite in this article on Vanax steel. Moderately difficult to sharpen, but won’t take you as long as with S90V. With significant amounts of Chromium, Molybdenum, Vanadium, and Tungsten, these steels are 100% ready for action. We report the latest news on new and popular knives, production knife companies, custom makers, innovations, and cover topics that are of interest to the knife carrying community. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Knifemaker Mike Pierce reported to me that he achieved peak hardness of 60.5 Rc from 1900°F without a cold treatment, which was increased to 63 Rc when going directly into the freezer after the quench. The only way it could help with grain size is if it helped with using a short high temperature hold. But, it’s not easy to work with, and few knife makers have been able to rise to the challenge of machining, grinding, and sharpening it. Presented by: Work Sharp Knife & Tool Sharpeners The Spyderco Nightstick is the KnifeNews Readers’ Choice for Best New Tactical Fixed Blade 2020! Check hardness and austenitize no higher than the peak hardness. Presented by: Work Sharp Knife & Tool Sharpeners The Mora Eldris LightDuty is the KnifeNews Readers’ Choice for Best New EDC Fixed Blade 2020! The nitrogen content is the same as 14C28N, which may simply be due to limits in nitrogen additions with conventional steel production. Retained austenite in the right amounts can sometimes improve toughness. “We also did extensive scientific testing on Maxamet’s performance, edge retention, and toughness and found that it easily rivaled the very best steels we’ve ever used,” they say. Here are all three below: The white particles are the carbides and the surrounding “matrix” is primarily martensite. For toughness testing I austenitized Nitro-V at 1850, 1900, and 1950°F for 15 minutes, followed by plate quenching and cryo, and then tempered twice at 350°F for two hours each time. No price has been announced for either the Maxamet Manix 2 or Native 5. Temper between 300 and 350°F depending on desired hardness. While there are some parallels, such an improving wear resistance, the analogy fails in the prediction that carbides can "pop out" of the matrix. 13C26 is nearly identical to AEB-L but produced by Sandvik. Dyes are hand-brushed on to the FRN scales, meaning that each Zome knife will be unlike any other. Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. best. 1) toughness is on somewhat of a log-scale, meaning 5 vs 10 ft-lbs is a bigger difference than 25 vs 30 ft-lbs. Carbides in steel are often compared to gravel in concrete. K390 VS M390. Model # SP-C255CMP . But grain growth with standard temperatures shouldn’t be an issue. I got good results in heat treating by austenitizing between 1900 and 1950°F for 15 minutes followed by a plate quench and a cryo treatment. Until Spyderco’s announcement, the Zero Tolerance ZT0888MAX was the only production knife made with Maxamet steel, and only 250 units were ever produced. That’s been tested in more recent articles: https://knifesteelnerds.com/2020/05/01/testing-the-edge-retention-of-48-knife-steels/, Your email address will not be published. Doug Ritter RSK® MK1-G2 Knifeworks Exclusive - Black / Stonewashed. Maxamet is made by Carpenter Technology, a company best known among steel snobs for its CTS-XHP, which made appearances on the Spyderco Techno, Slysz Bowie, and Chaparral among others. Maxamet is made by Carpenter Technology, a company best known among steel snobs for its CTS-XHP, which made appearances on the Spyderco Techno, Slysz Bowie, and Chaparral among others. That said, S30V is a great steel! After successful internal testing and positive feedback from some hardcore fans, Spyderco is preparing to roll out a Manix 2 Lightweight and a Native 5 Lightweight in Maxamet super steel. If you can get past that, which should be less of a hurdle than it would be on, say, Maxamet, then you should be fine. To check your heat treatment against mine, it is best to perform heat treatments from a range of austenitizing temperatures and going straight into the cold treatment used, whether freezer, dry ice, or liquid nitrogen. K390 VS Steel . I believe that Nitro-V and AEB-L are both available up to 1/4″ so unless all of that is sold out thickness shouldn’t need to be a deciding factor. Retaining the intuitive and strong compression lock, the Para 3 is a reliable EDC tool that will offer all day comfort at just 3.4 ounces. Here is a chart showing the relative position of AEB-L to get an idea of where Nitro-V likely sits: Nitro-V looks very similar to AEB-L with a nitrogen and vanadium addition. So 0.11% nitrogen is equivalent to about 1.75% Cr for pitting resistance. I next produced toughness specimens using the 1950°F austenitizing temperature plus cryo but tempered at 300 and 450°F to test the effect of tempering temperature. [1] https://www.bladeforums.com/threads/something-new-from-the-baron.1469387/. Overall the properties of Nitro-V are expected to be similar to AEB-L with perhaps an improvement in corrosion resistance. AEB-L and Nitro-V have a similar volume of carbide, approximately 4-6%. This could be due to insufficient dissolution of carbide (carbides are bad for toughness), or possibly because increased austenitizing temperatures led to more retained austenite despite the use of cryogenic processing. 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. The positive feedback from Mule Team mainstays probably had something to do with Maxamet’s quick move to production models, but Spyderco has also been testing it in-house for some time. You can get Nitro-V in 1/4″ though. Buy SPYDERCO SP81GPDGY2 for $217.00 with free shipping - Spyderco C81GPDGY2 Paramilitary 2 Folding Knife 3.47 inch Maxamet Satin Blade, Dark Gray G10 Handles at KnifeCenter Harkins, offers users a... Steel Will Screamer is First out of the Gate for 2020, Spyderco Voted Best Overall New for 2019 Lineup, Benchmade 980 Turret Voted Work Sharp Knife of the Year, Cold Steel AD-15 Voted Most Innovative New Knife 2019. So nitrogen can sometimes be added for improved hardness without a sacrifice in corrosion resistance. Another obvious comparison is with 14C28N which was designed as a version of 13C26 modified for improved corrosion resistance. It will be interesting to see what sort of a premium these new versions will command. $140.00. Choose Options. I recommend at least going into a household freezer directly after quenching to reduce the retained austenite as much as possible. Does that mean the process recommended above skips the pre-heat/equalizing (15min hold at 1500F) step in NJSB’s own heat treating guide? Maxamet is not stainless and requires proper maintenance to prevent rust and corrosion. $295.00. Makes sense with the logarithmic scale. I also have micrographs of AEB-L and 14C28N. More testing needs to be done in terms of corrosion resistance and edge retention to confirm the steel behaves in the expected range I proposed based on its composition and microstructure. Bohler calls this steel “Microclean” and it can be polished to achieve a true mirror. Nitrogen is not as prone to form nitrides with chromium as carbon is to form carbides. 33% Score (below this is a steel that scores a zero): 187 (33% of Maxamet's 563); closest is 3V at 198. Maxamet’s distinguishing metallurgical characteristic is the high carbon content (2.15%) and the inclusion of 10% Tungsten.

maxamet vs m390

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