Join knife companies and subscribe to the KnifeNews email. 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. 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. That said, S30V is a great steel! save hide report. Thanks Larrin. Made by Bohler in Austria. Spyderco Para 3 Maxamet, S110V, M390 bonus LT Wright Bushcrafter HC. 2) there is more scatter in results at higher values. Advantages: Extremely high wear resistance and corrosion resistance. I don’t know if a 400°F temper would see similar results. This Paramilitary exclusive is sure to turn heads with its red G-10 handle and all-around good looks all while performing like an all star with Bohler-Uddeholm’s M390 super stainless steel. 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. Sort by. New Spyderco Releases Just Put CTS Maxamet Super Steel on the Map, Tungsten contributes to the harden-ability, Millit Knives Stepping into the Spotlight in 2017, The X5 Flipper Breaks New Ground for Hogue, Sal Glesser Shares a Piece of Spyderco History on the Forum, ESEE Expands S35VN Lineup to Include Model 4, The 3rd Annual KnifeNews Readers’ Choice Awards are Here. Please vote in each of the ten categories... Another classic ESEE fixed blade is getting a variant made from powder metallurgy steel. M390 hardens to 60-62 HRC. 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. Typically such small additions of vanadium are for the purpose of grain refinement in low alloy steels. I agree it does depend on one’s definition of slightly. 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. Doug Ritter RSK® MK1-G2 Knifeworks Exclusive - Black / Stonewashed. Use 1900°F if using a freezer instead of liquid nitrogen. Thank you for the very detailed write up! How does 14C28N compare in toughness and edge retention? Bohler calls this steel “Microclean” and it can be polished to achieve a true mirror. Para™ 3 Lightweight Black Blade. I heat treated the specimens and Mike Pierce kindly machined them for me. The nitrogen content is the same as 14C28N, which may simply be due to limits in nitrogen additions with conventional steel production. Para™ 3 G-10 Digital Camo. The blade of this remarkable knife is crafted from Böhler-Uddeholm M390 particle metallurgy stainless steel. However, when comparing with AEB-L above, the hardness was not enhanced with Nitro-V. Nitro-V is a stainless steel sold by New Jersey Steel Baron which was first released in 2017 [1]. Nitro-V does indeed look very similar to AEB-L, having the same C, Cr, and Si along with a minor difference in Mn. 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. However there are a couple things that led me to make that statement: 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. You can read more about the history of AEB-L, 13C26, and 14C28N in this article. Very nice wtriteup, greatly appreciated. This appears to be significantly, not slightly, tougher. In stainless steels, the amount of retained austenite for a given amount of carbon in solution (hardness) is how much chromium is in solution (corrosion resistance). Presented by: Work Sharp Knife & Tool Sharpeners The Spyderco Nightstick is the KnifeNews Readers’ Choice for Best New Tactical Fixed Blade 2020! K390 VS Steel . share. Alongside the Maxamet models, Spyderco also announced a new “Zome” edition of the Delica 4 (shown below) and Endura 4. The ATAC, designed by legendary custom maker J.A. I used 4 specimens for each condition and these were machined by me. Because 14C28N has a similar nitrogen content plus higher chromium in solution it is expected to have superior corrosion resistance when compared with Nitro-V. Perhaps in the future we can test the corrosion resistance of Nitro-V to see how much of an improvement there is relative to AEB-L.
maxamet vs m390
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