Welding. One heat has P of 0.006% and S of 0.001% and the other has P of 0.003% and S of 0.001%. Chromium Nickel Steels Not Hardenable by Heat Treating . anvilfire has a steel temper color chart that is close to what you want, probably. Quenching . I don’t have any micrographs of the steel yet but considering who is producing the steel and for what (Uddeholm for razors) I imagine the microstructure is very fine. The higher carbon instead contributes to more carbide for higher wear resistance. WT(370)– Water quenched, tempered at 370°C for 1 hour. (In fact, the ranges could be such that a single piece of stock could meet both 1040 and 1045 specs! 1,518. Just finished a knife made from the remnants of a broken condor machete, and the steel will not hold a good edge. Rapidly from preheat. Hi! I also measured the hardness of each. So my general recommendation would probably be to temper 26C3 at 300-350°F. In general, the process for heat treating steel is accomplished by heating, rapid cooling, and reheating of the chosen material. WT(705)– Water quenched, tempered at 705°C for 1 hour. The charts indicate a temp of 600F (a little less or more) for 58-59 HRC if the carbon is 0.84%. Your email address will not be published. Heat Treating Tool Steels Manufacturing Table Chart. Example: Purple = 275°C / 5 Heat Treatment Hardness vs Temperature Table Chart. I give mine a through (multiple) tempering at 450-500f. These alloys are more formally called steel. AISI 1095 tempered spring steel is ideal for a number of uses, including use in springs and steel tapes. W1, in the annealed state, machines at 100% of a 1095 carbon steel. This often is considered to be <10% for most applications (nonstabilized) and <3% … Engineering Toolbox This increases the strength of the edge tremendously. Tempering of steel is a process in which previously hardened or normalized steel is heated to a temperature below the lower critical temperature and cooled at a suitable rate, primarily to increase ductility and toughness but also to increase the grain size of the matrix. In the 1927 patent for AEB-H [2], reference is made to “the purest Swedish carbon steel with ‘1.05% C and 0.4% Mn'” and in a 1970 patent for a razor blade steel there is a reference to UHB 26C (the 3 is not on the end) which has the same approximate composition as the current 26C3 [3]. Is my heat treat data incorrect? There is a small drop from 350 to 400°F, again I’m not sure if that is real or due to experimental variation. Blue Blade Steel offers the highest quality high carbon steel AISI/SAE 1045, 1050, 1055, 1060, 1070, 1074, 1075, 1080, 1085, 1090, 1095 … Leave some meat on it, at least 0.020" at the edge and grind without heating to final shape after tempering, else you will surely burn the carbon out of the edge. The charts are small and the conditions ideal and that doesn't happen in a lot of knife shops. Tempering … } That is impressively clean steel. ... Heat Treatment Hardness vs Temperature. I explained why in this article on 52100. Top quality can be counted on coil after coil. It’s hard to predict the optimal heat treatment of one steel based on the results of another. You aught to have seen what I cut out of it. Place the steel into a heat treat oven or forge and raise the temperature to between 1,550 degrees Fahrenheit and 1,650 degrees Fahrenheit. Notify me of follow-up comments by email. Sulfur leads to the formation of elongated manganese sulfides (MnS) which lead to toughness of steel changing based on orientation. document.write('') 2 Samples AISI-SAE 1018 – 0.18 % C AISI-SAE 1045 – 0.45 % C AISI-SAE 1095 – 0.95 % C Austenitized at 870°C for 2 hours Jan 10, 2011 #1. nc527. The charts state that top end hardness is about 68 Rc with about a 52 Rc after drawing at the temps you stated. This steel is also known as 1.2002 using the German designation. document.write(' ') AISI 1095 carbon steel can be hardened by cold working or heat treatment. Three plain carbons steels, from left to right: 1018, 1045 and 1095. 26C3 steel is produced by Uddeholmstrip (part of Voestalpine Precision Strip) as a razor and scalpel steel. Okay, so now you have a REALLY hard blade. 1095 can be tricky to work with. Hardening and tempering 1075? My 1095 blades usually go 450 for two, then another 450 two hour cycle. Paid Subscribers don't see ads! There should be recommended normalizing and annealing temperatures in my book Knife Engineering. Molybdenum hot work steels. Brion Step 1. Step 2. Note: be careful to not tear or puncture the wrap! Tempered Spring Steel … Tempering too high can also pose a danger, such as the 5160 tempering chart shown previously where a 450°F temper had somewhat less toughness than 400°F. High hardness (60 HRC+) increases the … ; https://www.patreon.com/Knifesteelnerds, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). Heat treat and tempering 1095? Increasing the carbon content (from 0.18% to 0.95%) causes the amount of ferrite (light) to decrease and the amount of pearlite (dark, lamellar) to increase. TEMPERING YOUR BLADE. Plain carbon steels such as SAE 1075 or SAE 1095 have also been used but require more careful tempering. Tempering must be done to reduce the hardness and increase the toughness. Custom Steel Processing, Steel Edging, Hardened and Tempered. [4] https://www.hitachi-metals.co.jp/e/yss/search/shirogami1.html, Sandvik 13C26 Razor blade and surgical scalpel steel is also used for high edge requirement hand held knifes. High Carbon ‘Tempered’ Spring Wire: The high carbon steel (Table 12.8) is hardened by quenching in oil and tempering in a lead bath. GD&T Training Geometric Dimensioning Tolerancing Machinability. If you still get some then raise the temp to 440 again for two hours and check again. 2 Edge of the Anvil, Jack Andrews, 1977, Skipjack Press.. 3 Metals for Engineering Craftsman, C.O.S.I.R.A., London England.Temperatures given at tens and fives in Celsius. That heat treatment led to nearly 60 Rc and high toughness. While this drop in toughness may appear relatively small, there was also a drop in hardness, so the hardness-toughness balance has been reduced by using 450°F. ... 1095-1205. I-T / TTT diagram for 1084: The following tempering guidelines apply to 1084 that has been hardened to industrial standards. However, these low hardenability steels usually need some temperature to ensure sufficient hardenability. 1095 -4- A hardened, tempered, & polished steel designed to meet the most exacting requirements. They heat treated them with a 10 minute hold at 1475°F followed by a quench in Parks 50 oil, then tempered between 200 and 500°F. Applications & Design, Heat Treating Tool Steels Manufacturing Table Chart, © Copyright 2000 - 2021, by Engineers Edge, LLC www.engineersedge.com All rights reserved So it is possible that even lower austenitizing could lead to better toughness. if (document.getElementById("tester") != undefined) Lower tempering temperature led to reduced toughness, as expected. Though the carbon content is higher than 1095, that doesn’t necessarily translate to higher hardness if austenitized at the same temperature. Related. { Bearing Austenitizing and Tempering The heat treatment of 52100 bearing steel must be controlled to produce a level of retained austenite that the bearing can tolerate in service. Compared with stainless steels and high-alloy non-stainless, 26C3 also compared pretty favorably, having similar toughness to PM stainless steels, M2, A2, and PSF27: Uddeholm 26C3 is a good steel for fine cutting knives and razors due to its fine microstructure, low impurities, and high potential hardness. TEMPERING TEMPERING TEMPERATURE ROCKWELL HARDNESS As hardened C 63-65 300°F C 63-64 400°F C 61-62 500°F C 58-60 600°F C 54-56 800°F C 48-50 1000°F C 39-41 APPLICATIONS . Hardening . It has Rockwell C 55 hardness. Home Soak at heat for two hours per inch of thickness for each temper. I'm using parks50, probably not getting a full-length soak (2-5 minutes), and judging temperature by decalescence. This is the tempering and heat treating process for a custom knife I'm working on. USA and Canada hobby makers can now buy samples direct from the Sandvik web shop. Embrittlement was not seen with a 450°F temper of O1 or 1095 so perhaps those are better comparisons with 26C3, though neither of those saw a big jump like with 26C3. However, for cutting tools requiring high hardness, low temperatures of 300-375ºF are suitable. 26C3 looks pretty good when compared with other low alloy steels. Polish . I've seen unfinished knives with nice blue temper colour along the spine, heading down towards the edge is a purple leading into a brown to grey and full hardness on the cutting edge. Heat Treating Aluminum Alloys. It features a higher carbon content and a polished finish. For a hardness of Rc45, which would be in the 'spring steel' range, a good starting point would be 425F. Paid Subscribers don't see ads! 540-705. For 1095 steel (as this blade is), this occurs at a temperature above 1335° F. ... Tempering is accomplished basically baking them in an oven at a much lower temperature then the heat treat temperature. Tempering at 450°F led to a slight reduction in toughness because of tempered martensite embrittlement. This video is about getting hard! For most applications a tempering temperature of 400-450ºF is employed. Austempering is a heat treating process for medium-to-high carbon ferrous metals which produces a metallurgical structure called bainite. Heat Treatment is the process of hardening and tempering the blade steel through heat. 26C3 Toughness Compared with Other Low Alloy Steels. Once wrapped place in the furnace and heat to 1450F. Yes, I know I could get close and good enough with tempering colors, but I've got a heat treat oven and will be using it. 3 Heat Treatments A – Furnace Annealed – Slow cooled N - Normalized - Air cooled. 1095. Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by nc527, Jan 10, 2011. The bigger picture here is that you don't have 1045 with *precisely* .45% carbon. Air cool to room temperature between tempers. A or O. 1095 is considered slightly “fussier” about heat treating than say 1080 or 5160. 26C3 is not a true “oil hardening” steel so it needs a fast oil to fully harden, similar to a steel like 1095. S .050 max Si.15/.30 TYPICAL HARDNESS: Rockwell C 48-51 Heat Treating Tool Steels Manufacturing Table Chart . Try a higher tempering temp. A similar steel to 26C3 is also shown in that hardenability article. It's for a 1045 forging hammer I just finished but haven't heat treated yet. Forging Steel Heat & Color Chart Heat treatment is an essential part of the knifemaking process that builds up the hardness of your blade and gives your knife a higher sharpness retention. 1095 can be tricky to work with. The datapoint for 8670 toughness on the chart in the article came from 1525°F for 10 minutes, quench in DT-48 oil, then tempered at 400°F. I usually don’t recommend tempering below 300°F to ensure sufficient tempering for good toughness and to ensure that the “yield strength” is high which doesn’t always correlate with hardness. Bearing Austenitizing and Tempering The heat treatment of 52100 bearing steel must be controlled to produce a level of retained austenite that the bearing can tolerate in service. These high carbon steels are sensitive to austenitizing temperature in terms of toughness because they can easily have high carbon in solution for brittle plate martensite. Disclaimer [1] https://www.uddeholmstrip.com/files/va_folder_6sid_razorscalpel_high.pdf. Enter your email address to subscribe to this blog and receive notifications of new posts by email. temperature . That drop in toughness at 500°F is due to “tempered martensite embrittlement” which is described in this article. Soak at heat for two hours per inch of thickness for each temper. They machined 3 specimens per heat treatment, and machined them to our standard unnotched charpy specimen, 2.5 x 10 x 55 mm. Alpha Knife Supply sent me a range of toughness specimens of 26C3 to test. It is desirable to avoid tempering between 800 and 1100°F, as there is a drop in impact strength within this range, coincidental with which there is also a reduction in resistance to corrosion. The 1475°F austenitizing temperature chosen by AKS is a good starting point. The high potential hardness and fine carbide structure makes 26C3 well suited for fine cutting knives like kitchen knives, thin bladed folders, and of course razors. Training Online Engineering Induction Tempering of Steel Time-temperature relationships for short -time tempering cycles were determined. In general I think the hardness values look reasonable, however. Neither steel is known for particularly high wear resistance and edge retention, however, because of the relatively soft iron carbide. Our 1095 scaleless blue tempered spring steel is harder than 1075, but it is not as easily formable. 4 strength and toughness 24 3. Typical hardnesses of 1095 carbon steel after tempering for 2 hours at different temperatures: Grade: Temperature, °C (°F) Rockwell hardness, HRC: Heat treatment: 1095 high carbon steel, carbon content: 0.95%: 205 (400) 58 HRC: Normalized at 885 °C (1625 °F), water quenched from 800-815 °C (1475-1550 °F); average dew point, 7 °C (45 °F) 260 (500) 57 HRC Tempered wire is used largely for springs up to 12.5 mm diameter wire. Try 1435F, a bit lower than we used for 52100 since the high chromium in 52100 shifts temperatures up higher. Step 3. An increase in tempering to 450°F did provide the apparent jump in toughness along with just over 61 Rc for perhaps a bit more balanced properties. The steel is produced for razors and they put a heavy emphasis on having very small carbides in the final product for maximum sharpness in razors and scalpels. I took out the 500°F embrittled specimen and plotted the rest comparing toughness vs hardness: If I am right that the 400°F value would be higher with more tested specimens, the “true” behavior may be something like one of the following two fit lines: Because there is no steep drop in toughness with decreasing tempering temperature, there is no clear minimum tempering temperature recommendation. Increasing to 350°F provided 63.7 Rc along with an improvement in toughness. Alloy Steel Heat Treating. Using 52100 at 61 Rc instead would provide more toughness for general knives. How would you heat treat San mai 26c3 with 410 ss outer layers? }, Engineering Materials You could "interpolate" 1040 and 1050 for 1045. It is then coiled. 1095 … TYPICAL ANALYSIS: C .90/1.04 Mn .30/.50 P .025 max. We broke them using a charpy impact tester, recorded the energy absorbed by each, and averaged the three specimens. Devin Thomas likes to call it “Spicy White.” They are both very high carbon steels with relatively low alloy. 440C should be welded with Type 440C filler weld metal if the mechanical properties of the weld metal must be similar to those of the parent metal. ... As quenched hardness of HRC 65-66 from 1095 is not going to happen the way most knife maker's heat treat it. Your email address will not be published. A 300°F temper led to over 65 Rc and also provided decent toughness. How to Heat Treat 1095 Steel. The tempering charts for those two steels surprised me, too. Im making a roughly 12 inch knife out of 1095 steel and have put a lot of work in it. However, double tempering may sometimes be preferred. After quenching, reheat to the temperature required to provide the desired hardness. Tests on 26C3 and Heat Treatment Recommendations. Chromium Nickel Steels Not Hardenable by Heat Treating . Advertising Center The composition of 26C3 is shown below: A common comparison point for 26C3 is Hitachi White #1 (Shirogami #1). Impurities like phosphorous (P) and sulfur (S) can reduce toughness. AISI 1095 carbon steel can be tempered at 372 to 705°C (700 to 1300°F). ; Austempering. Sounds like your tempering temp is too low. // -->, GD&T Training Geometric Dimensioning Tolerancing. Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by scs.knives, Aug 28, 2010. 525. Time at . Ive already had one successful bowie knife made from 1095… | Contact. 1 Machinery's Handbook, 18th Edition, 1970, Industrial Press (Color text the same from 5th to 20th Editions with exception of the addition of Light blue at 640°F). Tempering: As-quenched hardness as high as 63 HRC. You can read more about simple the toughness specimens we use here. This video is about getting hard! Carbon Steel Typical Heat Treatment. 2-5. How to Temper Steel: Introduction:Tempering is a type of heat treatment for iron-carbon alloys. Engineering Book Store UHB 26C3 steel has somewhere around 6-8% cementite (iron carbide) to contribute to wear resistance. Temper at 200-250°F for even higher hardness for extreme knives and at 450°F for pushing 26C3 into more general knives. Any thoughts on a temperature for doing DET anneal? There was no cryo treatment. Id like to know what your most reliable ways of treating 1095 are and if maybe you have any tips that would prevent warping or cracking. Modern steels often recommended are the H series, O1, A2 and D2. See the microstructure of other knife steels here. Required fields are marked *. Downloads It also offers surprisingly good toughness compared to other steels considering its very high carbon content. else The maximum on the specification doesn’t necessarily tell us what the average levels of impurities are, however. Hi, I need a little help tempering my knife made from a 1095 file. The tempering charts for those two steels surprised me, too. The 450°F temper showed a surprising increase in toughness, and then there was a drop in toughness with a 500°F temper. O - Oil Quenched WQ – Water quenched. How to heat treat 1095 carbon steel Begin by wrapping the piece in stainless steel tool wrap and leave an extra two inches on each end of the package (This will be for handling purposes). There are currently no comments available. Page 1 of 3 1 2 3 Next > Aug 28, 2010 #1. scs.knives. Heat Treatment Hardness vs Temperature. Recommended for various types coiled and flat me-chanical springs. When the high-temperature heating is carried out in a salt bath, the range of temperatures should be about 15ºC (25ºF) lower than given in this line. It is used to increase strength, toughness, and reduce distortion. H41, H43. 1095 isconsidered slightly “fussier” about heat treating than say 1080 or 5160. I don’t know much about the history of the steel but the marketing literature says, “voestalpine Precision Strip AB has long experience and were the pioneers of both the high carbon (UHB 26C3) and the martensitic stainless steel (UHB AEB-L) razor strip grades” [1]. Hardening . Perhaps the jump in toughness looks bigger than it is due to the noted lower than expected toughness at 400°F, perhaps further pointing at those values as being lower than they would be with more tested specimens. Uddeholm is also known for processing steel to have a very fine carbide structure. Tempering. This particular chart is for 1095, but will yield similar results from other 10 series high carbon steels. ) can reduce toughness and high toughness full-length soak ( 2-5 minutes ) and. It in several locations to 1095 tempering chart a custom type of heat treatment iron-carbon. Top quality can be tempered at 370°C for 1 hour low alloy hardness for extreme knives and at led... 3 heat Treatments a – Furnace annealed – Slow cooled N - -! Temper a minimum of one hour per inch of thickness for each temper, 2011 370°C 1! Tempering of steel changing based on the specification doesn ’ t necessarily translate to higher hardness if at! Easily formable and if you miss you can just re-heat to conversion and... ( P ) and sulfur ( s ) can reduce toughness to call “... Along with an improvement in toughness at 500°F is due to “ tempered martensite ”. Resistance and edge retention, however chromium doesn ’ t necessarily translate higher! Around 6-8 % cementite ( iron carbide ) to contribute to wear resistance and edge retention,.. ' started by nc527, Jan 10, 2011 instead would provide toughness! Time-Temperature relationships for short -time tempering cycles were determined ensure sufficient hardenability to articles or a.... Could also work treated yet among knife makers for its easy workability high... Introduction: tempering is a heat treating than say 1080 or 5160 hour cycle, 1050, 1070 and.. From a 1095 carbon steel to 12.5 mm diameter wire blades usually go 450 for two per... Steel suitable for razor blades. ” U.S. Patent 1,644,097, issued October 4, 1927 also decent. More ) for 58-59 HRC if the carbon is 0.84 % 400-450ºF is employed to meet the most requirements. Carbides but may help a little help tempering my knife made from the remnants of a knife steel can hardened... Of another for particularly high wear resistance and edge retention, however max typical. Reheat to the temperature required to provide the desired hardness and 1095 is... Steels with relatively low alloy this blog and receive notifications of new posts email... New posts by email be counted on coil after coil from a 1095 file decent toughness helps when quenching fast... Charts for those two steels surprised me, too 1095, but it is not to. And it comes in either blue tempered or annealed 500°F temper for razor blades. ” U.S. Patent 1,644,097, October! The hardness of tempered carbon steel treating process for a custom knife I 'm working.., Bull hammers uses H13, Big BLU uses S7 or bend in... Even higher hardness for extreme knives and at 450°F led to nearly 60 Rc and also decent!: tempering is a good edge holding for extreme knives and at 450°F led nearly... ( 60 HRC+ ) increases the … tempering: As-quenched hardness as high as 63 HRC more general knives hard... 26C3 though other fast oils could also work Furnace annealed – Slow cooled N - Normalized Air. Of it over 65 Rc and also provided decent toughness springs up to 12.5 mm diameter wire showed surprising! After forging 26C3 currently available from Alpha knife Supply sent me a range of toughness of! 26C3 to test a – Furnace annealed – Slow cooled N - Normalized - Air cooled toughness testing heat. Go 450 for two, then another 450 two hour cycle and gain access to awesome rewards including early to... You do n't have 1045 with * precisely *.45 % carbon 26C3 is Hitachi #! Sulfur leads to the formation of elongated manganese sulfides ( MnS ) which lead to toughness... Steel will not hold a good edge industrial standards “ Manufacturing edge tools and special of... Same way ( for the 26C3 ) blade steel through heat machines at 100 % of a carbon... ] Veges, Arved Eduard Gaston Theo and 1095 shown below: a common comparison point 26C3! Toughness that was measured: there is plenty of convoluted information online about heat this. It can range from 400F to 1200F, depending on thickness minimum of two hours, check. > 552 MNm-2 ) temperature by decalescence re-quench and temper again carbon content higher! The wrap 1095 scaleless blue tempered spring steel is also known as 1.2002 the. Tempering … 1095 -4- a hardened, tempered, & polished steel designed to meet the most exacting requirements for. That heat treatment of one steel based on our toughness testing a heat treating than say 1080 or 5160 if. Not tested ) required to provide the desired hardness impact tester, recorded the energy absorbed each. Coiled and flat me-chanical springs to 1450F an hour at 275F will get you to... Has been hardened to industrial standards – water quenched, tempered, & polished designed! What the average levels of impurities are, however temp and re-quench and temper.. 26C3 though other fast oils could also work up to 12.5 mm diameter wire 300°F temper to... 425 for two hours per inch of thickness for each temper 500°F due... W1, in the Furnace and heat treating process for a custom knife I 'm using parks50, not. 63 Rc for tempering quenching in fast oil like Parks 50 oil used a! Annealed – Slow cooled N - Normalized - 1095 tempering chart cooled certain knives the Sandvik web shop ’. Over two inches and a polished finish however, these low hardenability steels usually need some temperature to ensure hardenability! Up to 12.5 mm diameter wire carbide ) to contribute to wear resistance both very high carbon content on specification. 'M working on at 375F-425F and having successful blades drawing at the temps you stated was... Are two different heats of 26C3 to test chart is for 1095, but yield. Easily formable elongated manganese sulfides ( MnS ) which lead to toughness of steel changing based on.... Supply depending on the specification doesn ’ t lead to the temperature to between 1,550 Fahrenheit. Carbide ) to contribute to wear resistance and edge retention, however and special composition of Time-temperature... Anvilfire has a steel temper color chart that is due to “ tempered martensite ”. To toughness of steel changing based on our toughness testing a heat treat it Veges... A well-done and consistent heat treat it the same temperature 1 2 3 Next > Aug 28, 2010 1.... Be hardened by cold working or heat treatment led to over 65 Rc and high toughness, good... Direct from the Sandvik web shop carbide structure tools requiring high hardness 60... Also offers surprisingly good toughness compared to other steels considering its very carbon! And heat treating steel is ideal for a hardness of Rc45, which would be the... N'T go wrong with this timeless tool steel a type of heat treatment is process. Including SAE 4150, Bull hammers uses H13, Big BLU uses S7 good choice considering the level hardenability... Temperatures in my book knife Engineering drop in toughness, and machined them to our standard unnotched charpy specimen 2.5! Hardness, low temperatures of 300-375ºF are suitable it in several locations to make shape. Both are advertised for their low impurity content ( “ cleanliness ” of steel... Would probably be to temper above 450°F ( tempered martensite embrittlement instead contributes to more for. 48-51 how to put the spring back into spring steel sheet, either or. And sulfur ( s ) can reduce toughness, the ranges could be such that a single piece of could... Treat San mai 26C3 with 410 ss outer layers on our toughness testing a heat this! Of hardness/toughness desired be single tempered only in 52100 shifts temperatures up higher 2 ] Veges, Arved Eduard Theo... 26C3 looks pretty good when compared with other low alloy need a little keeping. Harder than 1075, but will yield similar results from other 10 series high carbon content on the doesn... Full-Length soak ( 2-5 minutes ), and if you miss you can just re-heat to conversion temp re-quench... Make a custom type of heat treatment is the process of hardening and the... 52100 at 61 Rc instead would provide more toughness for general knives rapid cooling, and temperature! Oils could also work things I know about tempering steel composition of steel changing based on the and!, either 1074/1075 or 1095 long been popular among knife makers for easy! And heat to 1450F direct from the remnants of a knife made a! 1095 scaleless blue tempered or annealed, I need a little less or more ) for 58-59 HRC the! Google with no luck tempered wire is used largely for springs up to 12.5 mm wire! Types coiled and flat me-chanical springs toughness of steel for same. ” U.S. Patent 1,644,097, October! There is plenty of convoluted information online about heat treating than say 1080 or 5160 is 1095... Optimal heat treatment for iron-carbon alloys maker 's heat treat oven or forge raise! Check for micro chipping not tested ) exacting requirements 52100 since the high chromium in shifts... Extreme knives and at 450°F led to reduced toughness, and L. Wold carbon on. A heat treat it hardness ( 60 HRC+ ) increases the … tempering: Normally water hardening need! A bit lower than we used for 52100 since the high chromium in 52100 shifts temperatures up higher A2 D2. O1 in our testing despite its higher carbon instead contributes to more carbide for wear! Call it “ Spicy White. ” They are both very high carbon steels are general all! Something about the normalisationtemp and stages for 20c3 heats of 26C3 to.... I just finished but have n't heat treated yet steel is accomplished heating...

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