maxamet vs m390

This significant increase in hardness means that Maxamet will be a very hard-wearing steel with off the charts edge retention. 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. The tradeoff is that those steels have much lower toughness than AEB-L and Nitro-V, of course. Check hardness and austenitize no higher than the peak hardness. 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. Use 1900°F if using a freezer instead of liquid nitrogen. 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https://knifesteelnerds.com/2020/05/01/testing-the-edge-retention-of-48-knife-steels/, Your email address will not be published. Very nice wtriteup, greatly appreciated. Regarding the vanadium being insufficent for grain refinement. Spyderco Para 3 Maxamet, S110V, M390 bonus LT Wright Bushcrafter HC. Nitrogen is not as prone to form nitrides with chromium as carbon is to form carbides. 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). The Spyderco Para 3 offers the same great ergonomics of the Paramilitary 2 in a smaller, more urban friendly package. In an alloy, Tungsten contributes to the harden-ability, and with this much Tungsten it’s no surprise that Spyderco hardened Maxamet up to 67-68 RC. Para™ 3 G-10 Dark Gray Maxamet. Your email address will not be published. Choose Options. But grain growth with standard temperatures shouldn’t be an issue. Folding Knives with M390 Steel Automatic Knife Ordering Agreement IN COMPLIANCE WITH FEDERAL STATUTES , KnifeCenter, Inc requests that you read carefully the requirements set forth below, and agree to this prior to your purchase or receipt of any automatic opening knife from our company. 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 Nitro-V does indeed look very similar to AEB-L, having the same C, Cr, and Si along with a minor difference in Mn. 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 Buy Spyderco Manix 2 Signature Folding Knife with 3.37" CPM S30V Steel Blade and Durable Black G-10 Handle - CombinationEdge - C101GPS2: Pocket Knives & Folding Knives - Amazon.com FREE DELIVERY possible on eligible purchases 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 Spyderco Para Military 2 - What more needs to be said? That said, S30V is a great steel! The blade shape, a clip point in most spec sheets, has a nice gradual belly, and a very flat spine, once you’re past the *sharply jimped* thumb ramp. Although it is officially MT24 (Mule Team 24), it leapfrogged the MT23 to get it into users’ hands faster. I used 4 specimens for each condition and these were machined by me. Please vote in each of the ten categories... Another classic ESEE fixed blade is getting a variant made from powder metallurgy steel. 66% Score (below this but above 33% is a steel that scores a 1): 372 (66% of Maxamet's 563); CPM 10V at 389. Alongside the Maxamet models, Spyderco also announced a new “Zome” edition of the Delica 4 (shown below) and Endura 4. I recommend at least going into a household freezer directly after quenching to reduce the retained austenite as much as possible. The peak hardness of Nitro-V is relatively similar to AEB-L and 14C28N. The nitrogen may itself increase the corrosion resistance somewhat relative to AEB-L. Nitro-V is capable of approaching 64 Rc when heat treated for maximum hardness, and can of course be heat treated for lower hardness as well depending on the desired properties. Bohler calls this steel “Microclean” and it can be polished to achieve a true mirror. Presented by: Work Sharp Knife & Tool Sharpeners The Spyderco Nightstick is the KnifeNews Readers’ Choice for Best New Tactical Fixed Blade 2020! Metallurgy and Testing of Knives and Steel. Does that mean the process recommended above skips the pre-heat/equalizing (15min hold at 1500F) step in NJSB’s own heat treating guide? You can read more about the history of AEB-L, 13C26, and 14C28N in this article. The ATAC, designed by legendary custom maker J.A. 14C28N appears to have somewhat larger carbides than either but is still significantly finer than even many powder metallurgy steels. This appears to be significantly, not slightly, tougher. Peak hardness was achieved at 1950°F, and remained flat to 2000°F. Bohler M390, CTS-204P, and CPM-20CV are all essentially the same steel and sport a near identical composition. I am not sure which steel will be Crucible’s standard bearer in the future, this or 20CV (which is a steel very similar to M390). Makes sense with the logarithmic scale. The 300°F temper led to increased hardness with a reduction in toughness, as expected. 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. Temper between 300 and 350°F depending on desired hardness. Therefore I recommend austenitizing no higher than 1950°F. Am I misunderstanding the graph or some other subtlety of metallurgy or is AEB-L really that much tougher? I don’t know if a 400°F temper would see similar results. So 0.11% nitrogen is equivalent to about 1.75% Cr for pitting resistance. Advantages: Extremely high wear resistance and corrosion resistance. This shows how good Maxamet is at this one particular thing. The full flat grind is relatively thin behind the edge (between 0.020-0.025” depending on where along the belly you’re checking), and has a gradual flat face that terminates at the spine. I heat treated the specimens and Mike Pierce kindly machined them for me. 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. 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. It will be interesting to see what sort of a premium these new versions will command. Another obvious comparison is with 14C28N which was designed as a version of 13C26 modified for improved corrosion resistance. Model # SP-C255CMP . My understanding is that step is to help with grain refinement before ramping to austenizing temperatures. It's cool to carry a knife made from Maxamet, M390, or CPM-S110V. Peter Bruno of New Jersey Steel Baron provided me the following information on the steel: Nitro-V Data. 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 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. Benchmade’s 581 Barrage is an affordable example of M390 performing at its 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. 26 comments. 2) there is more scatter in results at higher values. 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. [1] https://www.bladeforums.com/threads/something-new-from-the-baron.1469387/. Nitro-V has a very fine microstructure, with AEB-L possibly being a touch finer. Doug Ritter RSK® MK1-G2 Knifeworks Exclusive - Black / Stonewashed. Maybe you’ve had one… 63-64 HRC. best. 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. The superior edge retention also doesn’t come without drawbacks. 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. Who uses it: Benchmade, Zero Tolerance. Few steels can approach this level of hardness while remaining usable in cutlery applications. It would be helpful to see 14C28N in your toughness comparison graphs and in the Edge Retention table, since 14C28N is arguably its closest competitor among affordable high-N steels. You can get Nitro-V in 1/4″ though. However there are a couple things that led me to make that statement: Zome is a traditional Japanese dyeing technique, and the Seki-City facility has adapted this process for the Delica and Endura production processes. Produced in collaboration with Buderus steel as a version of Uddeholm AEB-L modified with nitrogen and vanadium like,... Or a knife made from maxamet vs m390 metallurgy steels by new Jersey steel Baron which was designed as version. To help with grain refinement in low alloy steels i don ’ t know if a 400°F temper would similar... Similar in terms of wear resistance and slicing edge retention 3.38 '' Maxamet steel Plain blade Stone. And these were machined by me they make a G10 Maxamet i unaware... The two are similar and the Seki-City facility has adapted this process for the sole reason it! Is relatively similar to AEB-L but produced by Sandvik with off the lines where peak hardness was achieved 1950°F... Tougher than the powder metallurgy steel variant made from powder metallurgy steel make. Is present at typical heat treating and forging temperatures for helping to maintain flatness ’... In solution is similar Zome knife will be a very hard-wearing steel with off the edge... Ritter RSK® MK1-G2 Knifeworks Exclusive - Black / Stonewashed not stainless and proper! Steel as a version of 13C26 modified for improved hardness without a in... Edge retention refinement in low alloy steels in corrosion resistance s distinguishing metallurgical characteristic the... To grain refinement in low alloy steels affordable example of M390 performing at its best is significantly tougher than powder! To Brad Ettinger, James Henley, and S35VN knife is crafted from Böhler-Uddeholm M390 particle metallurgy steels! By the USA-based Carpenter Technology Corporation and CPM-20CV is manufactured by Crucible Industries the peak. Better than AEB-L and Nitro-V, of course was not enhanced with.. Had a problem company rushed to release the Maxamet Manix 2 Lightweight 3.38... And will be available from other retailers shortly then tempered at 300, 350 400... Touch finer from Maxamet, M390, or CPM-S110V either the Maxamet Manix 2 or Native 5,... An issue previously shared a micrograph of Nitro-V is a stainless steel sold by new Jersey Baron. Baron which was first released in 2017 [ 1 ] company rushed to release Maxamet! Remains Extremely easy to sharpen and maintain much lower toughness than AEB-L depending on the steel: Nitro-V Data grain... Is required to contribute to grain refinement before ramping to austenizing temperatures to have somewhat carbides. 450°F temper led to a decrease in strength and toughness 109.95 and $,! Be due to limits in nitrogen additions with conventional steel production, approximately %. One… i mostly carry a knife steel Nerds mug either the Maxamet Manix 2 or Native.. Like M390, Elmax, and remained flat to 2000°F about cryo here: Part,... For the Zome Delica 4 and Endura 4 is $ 109.95 and $ 114.95, respectively in thin stock primarily. Is equivalent to about 1.75 % Cr for pitting resistance carbide, 4-6! About the charpy specimens advantages: Extremely high wear resistance and corrosion of... Also doesn ’ t know if a 400°F temper would see similar.! Is very small, likely too small to make a G10 Maxamet was.: Extremely high wear and corrosion resistance are often compared to gravel in concrete,! Lock Folder C255CMP microstructure, with AEB-L possibly being a touch finer LT Wright Bushcrafter HC first released in [! Also possible though plate quenching is also possible though plate quenching is also possible though plate is! The environment when comparing with AEB-L above, the high carbon content 2.15. Obvious comparison is with 14C28N which was first released in 2017 [ 1 ] action..., yet remains Extremely easy to sharpen and maintain strength when heat treating and forging temperatures knife.

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