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8670 heat treat. Use the chart below to select the tempering temperature. Does every oil quenching steel have scale that "pops off" from a successful quench? I have quenched a couple knives of 8670 so far, and the scale is solid black with little to no Why is 8670 so unpopular? For real. Stay tuned for more. See full list on popsknife. As my knife use runs more to the hunting, general purpose, and EDC realm, rather than hard use bushcraft, he was curious what my impressions were of it (from the user end), and specifically how it Feb 21, 2015 · Proper heat treatment and selection of the steel according to the desired task is very important, but in my opinion and experience the best steel in the world won't help you much if you don't design you blade properly and put the correct edge geometry on it for your desired task. His results are compelling. 2018 thread that lists good tests for this steel. Quench: Medium oil quench. I have a question about heat treating that does not seem to have many discussions. 1095 steel is easy to work with, and it can be hardened by heating it between 1475°F and 1650°F and then quenching it in oil. 8670 heat treat coupon results. Whether you’re making a bushcraft fixed blade or an everyday folding knife, heat treatment determines the knife’s hardness, toughness, and edge retention. So I can only get somewhat close, not exact. Sep 9, 2022 · Check out . 8670 benefits from some soak time at temp. Temper: Temper twice for two hours each time. Follow the heat treat recipe and the steel will harden. We did a study on how to optimize its toughness and hardness. 80crv2 typically needs to soak at temperature in the hardening stage (which can be difficult in a forge) but it is forgiving enough to do without. In Feb 1, 2020 · A couple of months ago, I had a conversation with @Cohutta about the relatively new 8670 steel. Easy to Read Font Water Resistant Printed on Vinyl Sticks to Smooth Surfaces Converts Between Inches and Millimeters Color Codes Inch Fractions 5. If you want you can send me a chunk of that and I will do a grain refine and heat treat on it free of charge and you can retest to see what the results are. [1] Carnes, Robert and Gary Maddock. OEM 8670 Heat Treat SupplierWe are proud to offer our high-quality heat treat services for OEM 8670 parts at Dongguan Hongrui Model Technology Co. Apr 23, 2025 · Heat treatment for 8670 and 1095 steels involves distinct processes tailored to their compositions and intended applications. If you use non food grade oil to quench your steels I SAE AISI 8620 Steel Properties The tables below summarize SAE AISI 8620 steel properties, and specification including chemical composition, mechanical properties, hardness, heat treatment, etc. These are 3/16" thick 8670 steel and will be full flat ground, with a taper down the length of the blade. MADE IN THE USA **These bars are not precision ground and are not guaranteed to be perfectly flat. 40mm and hammered through a nail will no deformation. Incredibly tough with great edge retention. So, why is this steel so uncommon? Jul 22, 2020 · For those of you who use 8670, do you do most of the grinding before or after heat treat? How is bad is 8670 to warp during heat treat? I grind after heat treat, worked with 3/32 up to 1/4 and no problem with through hardening. They're chart isn't getting anything near what you are. I’m in progress with my first knife and I would like to know how I can heat treat and get to critical temperature without a forge, what is the easiest and cheapest way I can do this with minimal materials? Mar 4, 2019 · I've gathered all of the information I have on AEB-L steel, including its history, toughness, edge retention, ease in sharpening, and other properties. Jun 27, 2019 · Q: “What is the best steel for knifemakers who want to do their own heat treating?” A: Here’s our list of the top 4 easiest blade steels to heat treat: 1084 15N20 8670 80CrV2 or Talonite is hard and does not require further heat treating. Basically any steel with 3% chromium or more. supplies A quick glimpse of my heat treat process for 8670. 8670 steel is austenitized at a lower temperature range of 1475°F to 1550°F and quenched in oil, making it relatively easy to heat treat. May 20, 2019 · What makes a steel easy to heat treat is strongly controlled by the heat treatment route. We were using 80crv2 before and never planned on switching. ” Advanced Materials & Processes June (2004): 37-40. Apr 26, 2021 · Andy and I both use Popsknifesupplies 8670. 80CrV2 steel also benefits from heat treatment, particularly in achieving high hardness and wear resistance. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket © 2025 Google LLC 8670 steel? If you know how to heat treat it well (which can be different for swords compared to knives, since toughness is more important), should be fine. Vanadium in 80CrV2 refines the grain structure during heat treatment, making the steel tough and wear-resistant. 8670 is a popular steel for being easy to work and heat treat. Use the graph below to select your temperatures: Heat Treatment for 8670 Carbon Steel Place blade in forge or Heat treat oven pre-heated to Austenitizing temp 1500°F (soak for 5 - 10 minutes if using a heat treat oven) Sep 23, 2021 · The method of heat treating normalized steel and checking with a magnet would not work for high alloy tool steels, high speed steels, stainless steels, etc. Mar 13, 2011 · A new article where we looked at a bunch of heat treating variables for 8670 to narrow down the best approach for heat treating it. The peak in toughness with 1500°F is particularly good information, and we know now that the prior processing used results in good final properties. 1084 is sorta in between medium and fast oil quench, where medium does fine for thin sections and fast is the go to for thicker sections. Click to expand Yes, 8670 purchased directly from the mill, treated by Peters. From Alphaknife From Pops 8670 Hardening Austenizing temperature - 1,550 Hold/Soak Time - 3-10 minutes Expected Rc (as quenched) - 63-65 Oil Quench - Parks 50 Tempering Oct 16, 2020 · It will work fine with O1 and 8670 but you may not get full hardness on 1084, especially with thick cross sections. Feb 17, 2016 · 8670, 80crv2, 1084. I honestly don’t know what the allure would be to 1095 over 8670 aside from ease of sharpening. Jan 17, 2004 · Expected Rc (as quenched) - 63-65 Oil Quench - Parks 50 Tempering Temper twice for 2hrs. I'm focusing on making it my go to steel as it seems best suited for outdoor/hunting knives of the simple steels I can heat treat in a forge. We switched for a few reasons. Then temper anywhere from 350-400 depending on use. Mar 8, 2020 · I found 15n20 to be the easiest for simple heat treatment and its great to work with. Experience quality and reliability! Feb 23, 2013 · We suggest heat treating temperatures recommended by the mill who made the steel. Looks like he spent a good deal if time and effort in playing to get those results Dec 22, 2024 · The heat treatment processes for 8670 and A2 steels differ primarily in their austenitizing temperatures, quenching methods, and tempering procedures. In a good propane forge (which I don't have), this isn Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Find our Suggested 8670 Heat Treat Here. I initially planned to use 8670 in only my Apr 30, 2025 · What Is Heat Treating in Knife Making? Heat treating knife blades is the critical process that transforms raw steel into a high-performance cutting tool. Jan 17, 2004 · A new article where we looked at a bunch of heat treating variables for 8670 to narrow down the best approach for heat treating it. Heat Treatment 1095 and 8670 steel require specific heat treatments to achieve their desired properties. Apr 26, 2021 · 8670 AKS from the Alpha Knife Supply website they give the following for a heat treatment protocol. Any of your 10## series steels can be easily tempered in a home oven/toaster oven. 8670 is an economy steel with very basic heat treat, while Z-Tuff requires a much more complicated heat treatment besides costing 3 times as much as 8670. Seems like tough stuff. Some alloys have additional heat treat recipes that are significantly different than the mill recommendations. After machining, the steel is heat-treated and quenched depending upon the type of steel being used. Aug 2, 2022 · Does heat treatment matter more than knife hardness? Can you have a bad heat treatment with good hardness? Where is the performance difference? Does edge retention suffer from a high hardness but Oct 27, 2023 · A quick glimpse of my heat treat process for 8670. The adhesive sticks to smooth surfaces. My recommended heat treatment is 1500°F for 10 minutes, quench in fast or medium oil, and temper between 300 and 450°F depending on the desired hardness. I have parks 50 and canola Mar 22, 2023 · 2) How to heat treat in a forge – includes the best thermal cycling to use prior to forge heat treating. Nov 28, 2020 · I’ve been getting pretty good results with 1084 but would like to try a different steel. AEB-L, 52100, 8670, and a bunch of Nitro-V. AISI 8670 / SKS 5 Low Alloy Tool Steel Richtanalyse / Chemical Analysis (in %) Wärmebehandlung / Heat Treatment Austenitisierungstemperatur / Austenitizing Temperature: 850-890°C / 1560-1635°F Abschreckmedium / Quenching Medium: Öl / Oil Anlassen / Annealing (Tempering): 70 Jan 29, 2010 · 1084, 1075/1080, 8670, 15n20, 80crv2, and 5160 are all much more forgiving in heat treat. Jul 25, 2007 · How do we reconcile these two? Why are springs tempered to 40s or 50s if optimal toughness is closer to 60RC for many steels? Why do saw manufacturers heat-treat 8670 to 52RC? 8670 is a popular steel for being easy to work and heat treat. Jan 5, 2021 · I decided, since the handle shape is booring, the pin holes are too small and in the wrong locations, and the heat treat is garbage, I would reforge the bushlore and then do a proper heat treat. Aug 28, 2017 · The steel is cut to size with a Lazer which hardens just the very edge an angle grinder works best to cut it, they are annealed and very fine grain for heat treating, 8670 is similar to 5160 for heat treating, bring up to 1525 and quench, hold for a minute or two if you want. We looked at Our 8670 has been properly annealed and is in the soft condition. (OC) comments sorted by Best Top New Controversial Q&A Add a Comment Heat Treatment for 8670 Carbon Steel Place blade in forge or Heat treat oven pre-heated to Austenitizing temp 1500°F (soak for 5 - 10 minutes if using a heat treat oven) 78 likes, 5 comments - 2arrow_knives on July 15, 2023: " My 8670 Heat Treatment process is not to the book Iv been told, it’s an odd way to do it. Mar 23, 2023 · Knife steels with significant nickel additions are surprisingly rare, though there are a few key steels, especially “low alloy” steels typically used for forging and pattern-welded Damascus. Temper: At least one temper for 30 minutes. Jun 2, 2025 · The heat treatment process for 8670 typically involves quenching and tempering, which enhances its strength and durability. The steel must be heat treated to get to a hardened state. If you overshoot the maximum temperature by a small amount, toughness will go down dramatically. It has very good toughness as well. 88 Si: 0. But it works for I don't use 8670 a lot but this is the procedure that I use. 8670 post heat treat. “Tool Steel Selection. Not long, 10 mins or so, but still some soak time. Heat treat involved soaking at ~1630 for ~7 minutes then quenching in canola oil, tempering x2 at 235° for 2 hours. , Ltd. 43 Mn: 0. Done right, it should be a tough steel, somewhat tougher than it's plain carbon steel equivalents. Would either of these steels be good for heat treating in my home forge and quenching in canola oil? Thanks Josh Feb 24, 2021 · Austenitize: Heat to 1,560°-1,635° and hold for 5 minutes. Skip it—or do it poorly—and even the best design won’t stand up to use. 50 Ni: 0. Common Applications and Performance Considerations Typical Applications for 8670 Steel 8670 steel is known for Sep 7, 2021 - 8670 is a popular steel for being easy to work and heat treat. Each will perform much better with precise heat treat, but they will harden in a forge with a short soak, and quenched in warmed canola oil. Fractions are color coded to easily lookup values by fraction increments (1/2, 1/4, 1/8 etc. #handmade #knifemaker #workinprogress Knife Steel Nerds How to Heat Treat 8670 New Apr 24, 2021 6 8 Share Locked By becoming a member, you'll instantly unlock access to 297 exclusive posts 1 Image 9 Polls 254 Writings 33 Videos By becoming a member, you'll instantly unlock access to 297 exclusive posts Knife Steel Nerds Larrin article on 8670 heat treat, Pop's A Seedy Lot Apr 26, 2021 2 3 Replies 71 Views 5K Jun 3, 2021 08H3 Tops Bushcrafter Kukuri sheath mod Edgewalker May 8, 2021 2 Replies 39 Views 1K Jun 2, 2021 Rockfarm Handles Gil P. 8670 Testimonial by Paul LeBatard and Seth Borries Nov 23, 2021 · How to Heat Treat 8670 - Knife Steel Nerds 8670 is a popular steel for being easy to work and heat treat. And my “foolproof” method for getting consistent results with forge heat treating One of the steels I tested with the forge heat treating method I developed was 8670 where I achieved very similar results to the furnace heat treating: Jun 25, 2020 · The ideal temp for when the blade hits the oil is 1525 so bring it up to around 1550 cause it will lose some heat in between your oven and quench tank you don’t need a full 5 minute hold or soak with 8670 2-3 minutes is fine. Jun 2, 2018 · Warren, I like using the 8670, but I'm puzzled by either the numbers you're getting or what AKS has on their site for heat treating results. It's in my plans to test though. As a leading supplier in the industry, we utilize advanced heat treatment processes to improve the mechanical properties of the material, such as hardness and strength, while maintaining the overall integrity of the part, Our team of 8670 is a popular steel for being easy to work and heat treat. I recently discovered it, and it’s an awesome steel! Better edge retention than 1095, tougher than 5160, cheaper than dirt, and as easy as it gets to heat treat. 5" Inch Sticker This Unit Conversion Chart is printed on water resistant vinyl. Chuck at AKS has used 8670 at high hardness with great results. Dec 21, 2006 · Im making a nice backpacking chopper out of this steel, and looking for extreme durability. used to have 1-brick forge and canola oil on hot plate. Mar 26, 2012 · Of the "easy to heat treat" steels, 15n20 has been my go to steel. has anyone else tried this steel? any heat treat tips? Here is composition: C: 0. Jun 23, 2022 · How are you supposed to heat treat 80CrV2 when there are so many conflicting recommendations? Is the steel any good in the first place? Whether used for creating blades and knives or contributing to the efficiency of cutting tools, 8670 steel continues to play a vital role, embodying toughness, wear resistance, and overall excellence. The reason for the nickel additions is an increase in toughness. This makes it suitable for applications requiring durability and wear resistance Oct 10, 2018 · Good afternoon, everyone. What's the deal with that? I can't post the picture of the chart, but as quenched at 1600 puts the HRC at barely over 61, then descends rapidly with tempering. You do not have to do any non-standard wasteful processes before heat treating. the old sailor That is if your Apr 1, 2019 · How does the toughness of 5160 compare with other knife steels? How do you heat treat 5160 to ensure that the properties are maximized? Grinding before or after heat treat? Currently finishing up the rough profile of my first two chef knives (actually my first knifes in general) and I'm wondering how far do I take the grinding before heat treat. Should I just use the standard 1500/400 with this steel? What kind of soak times? I’m heat treating it in an atlas mini forge. Knife Steel Nerds Link And this one Heat treating 8670 Jan 10, 2013 · I would heat treat it like L6 and quench in oil. It so far seems like seriously nice stuff. 8670 steel is a versatile alloy with a broader austenitizing temperature range of 1475°F–1550°F, making it more forgiving and suitable for home heat treatment. Heat to 1,500°F. What nickel does to steel increase toughness takes a while to explain because I have to explain Sep 6, 2021 · 8670 steel hardness is 59 HRC as per the Rockwell hardness scale, and this varies with the heat treatment used. We looked at austenitizing temperature, tempering temperature, Parks 50 vs AAA, and more. Someone will get a great deal. If sending out steel for heat treating it depends on the type of equipment they have, though they typically prefer “air hardening steels” such as those in the high alloy, stainless, and “extra stainless” categories. It can also be tempered to reduce brittleness. I would only consider it partially air quenching in thin sections not fully air quenching like more complex steels. Most of the procedures that I have are handwritten so as I write them in digit Dec 11, 2022at7:25 PM Locked Heat treating 8670 Join now By becoming a patron, you'll instantly unlock access to 12 exclusive posts 1 Image 9 Writings 2 Videos By becoming a patron, you'll instantly unlock access to 12 exclusive posts 1 9 2 Tony Severio 5 likes, 0 comments - pee_dee_knives on June 22, 2025: "18 blades ready for heat treat. Aug 2, 2025 · Looking to learn more about heat treat? Check out this article for all the information about heat treat you need to get started! Work in progress. May 5, 2019 · Very interesting. May 23, 2025 · Both 8670 and 80CrV2 steels benefit from careful control of austenitizing, quenching, and tempering processes to optimize their mechanical properties. Some brands can get it to 61HRC with intense heat treatment. Bars are 48" in length. Non Belt Knife Carry Watcher of the Woods May 13, 2021 2 Replies 30 . Quench in oil. Heat Treatment for 8670 Carbon Steel Place blade in forge or Heat treat oven pre-heated to Austenitizing temp 1500°F (soak for 5 - 10 minutes if using a heat treat oven) 1075 Heat Treat Information: Austenitize: It is critical to not exceed the maximum austenitize temperature. Summary and Conclusions Description HEAT TREATING INFO COMING SOON! Material certificates are available upon request, and will be posted to this page soon! The 8670 steel, belonging to the 86xx series low alloy steels, has a rich history rooted in its development during World War II. Apr 26, 2021 · Summary 8670 is very easy to work with and it is forgiving in heat treatment. Most of the procedures that I have are handwritten so as I write them in digit 1 Share Locked By becoming a member, you'll instantly unlock access to 118 exclusive posts 60 Images 31 Writings 69 Videos By becoming a member, you'll instantly unlock access to 118 exclusive posts Patreon is empowering a new generation of creators. Those additional alloying elements are slow and stubborn, take a bit to move around. 300°F - 325°F - 62-63 375°F - 400°F - 61-62 8670 Heat Treat Information: AKS Austenitize: Heat to 1,560°-1,635° and hold for 5 minutes. I started using Pops 8670 steel for my blades a few months ago. You guys ever work with 8670? Ground this one down to . Jan 28, 2021 · The grain should be fine enough that you can not see it with your naked eye. It gets more than hot enough to effectively heat treat O-1 (1450+) and other basic carbon steels, but it's not going to get hot enough or have even enough heat to heat treat stainless or long soaking steels or forge steel effectively. 8670 Heat Treat Information: Austenitize: Heat to 1,560°-1,635° and hold for 5 minutes. I've not used 80crv2 for a kitchen knife yet. 28 I was thinking 1550F, soak for 5 to 7 minutes, quench in oil. The heat treating and quenching operations increase the toughness and strength of the material. It has a straight-forward heat-treat with very consistent results, and minimal decarb. Crafted with a strategic focus on conserving nickel and other precious alloying elements, this steel has found its place of prominence Feb 23, 2013 · I like using the 8670, but I'm puzzled by either the numbers you're getting or what AKS has on their site for heat treating results. Really beginning to understand the 80-20 rule. The most common are 15N20, 8670, and L6. thread by Willie71. Ease of use and minimum warps was nice but the performance was a surprise. I don't use 8670 a lot but this is the procedure that I use. I'm sending a pair of knives to an avid home chef in 15n20 and 8670 for testing to see what he thinks. Especially since part of the point of going to 8670 is the additional toughness, you really need to dial in your heat treat process to get the goodness out of it. I have an old kiln with aftermarket pid controller/thermocouple and gallon can of Parks 50. Mar 24, 2025 · New experiments comparing performance of small shop custom heat treating against large-scale commercial heat treating of blade steels. There is a decent phone app called “heat treat” that will give you heat treatment specs on most steels. Jun 1, 2021 Replies 19 Views 368 Jun 2, 2021 Gil P. In other words, you may end up with auto hamons with thick blades and medium speed oils. 5"x8. The combination of carbon, nickel, chromium, and molybdenum contributes to the hardness of 8670 steel. It also rust lest than 1084. The rating scale is 0-100, 0 being minimum and 100 being maximum. Support and engage with artists and creators as they live out their passions! PRICES MAY VARY. ) Perfect for Jul 31, 2022 · I like that one a lot. 50 grit currently going to 400. Tool Steels are produced in the annealed condition for ease of machining. Edge retention was a huge surprise. I have not attempted to heat treat any of those in a forge and the methods required to do so would be different. 8670 Neat structure post heat treat. Except for the advertising benefit of saying Z-Tuff, 8670 seems to be the best value. What nickel does to steel, how to heat treat nickel knife steels, how they compare, and much more!Written article with links and other information: https://k This is a long read (link below) but it has some good info in the charts about 8670 properties (hardness/toughness) compared to other simple steels. Tempering twice for two hours each time is preferred. What's the deal with that? I can't post the picture of the chart, but as quenched at 1600 puts As a trusted manufacturer and exporter, we specialize in 8670 Heat Treat solutions at Dongguan Hongye Intelligent Equipment Technology Co. Aug 12, 2005 · Hopefully this is helpful to people that are looking for help in their 52100 heat treating. 71 Cr: 0. Share Add a Comment Sort by: Best Open comment sort options Top New Controversial Old Q&A Dec 16, 2022 · It was interesting to see that the heat treatment is relatively insensitive to austenitizing temperature, anywhere between 1925 and 2050°F seemed to work fine. Understanding these heat treatment parameters is crucial for achieving the desired balance of hardness and toughness in either steel. Chris’ 8670 heat treat is on POINT!!! 8670 - a super tough steel, really easy to heat treat and a great place to start with your knife making adventure! 8679 has pretty much the easiest heat treatment of any cutlery steel yet yields fantastic results being super tough with decent edge holding and it’s nice to forge with to! Aug 12, 2007 · I used an adapter to a 20# propane tank, and can adjust the flow on the torch to control temp. . 8670 is my favorite Feb 17, 2020 · Toughness measurements of a range of popular steels used by forging bladesmiths, and an explanation for what makes one better than another. temper at 300F for May 31, 2025 · Mechanical Properties of 8670 Steel Hardness 8670 steel is known for its impressive hardness, typically ranging from 60 to 62 HRC after proper heat treatment. Jul 15, 2017 · Just bought a couple of pieces to try, some for kitchen utility knives and one cleaver. ck3fd eb3 afvn 70sq gs un siow0 hlz9p jyxo llc