That old pine in particular is some crazy hard stuff. In some previous articles I have shown the balance between my toughness and edge retention measurements such as in the following chart, where the high alloy non-stainless are in orange and the blue are stainless: However, one issue with these charts are that difference in toughness is that a linear scale for toughness is a bit misleading for visualizing practical toughness differences. That is an air-hardening- high carbon, high chromium tool steel. https://cedric-ada-store.creator-spring.com/listing/brickard-heritage-collectionGood gravy its bricky on thingsSubscribe and hit the bell! See the chart below showing 52100 steel that was overaustenitized (unintentionally) by a knifemaker that sent me specimens for toughness testing. Another common heat treating choice that is not even categorized as a mistake is tempering in the high temperature regime (~1000F) rather than the low temperature regime (~400F). So for most steels they are given a rating at around 59-62 Rc, apart from a few steels that are never used at that hardness. [Steel Knife Review], What is 14c28n steel? Thank you for the accurate data. The bump in hardness comes from precipitation of fine carbides in the steel, read an article I wrote on budget steels here, https://knifesteelnerds.com/2019/05/26/new-micrographs-of-42-knife-steels/, https://i0.wp.com/knifesteelnerds.com/wp-content/uploads/2021/10/stainless-toughness-10-19-21.jpg?w=757&ssl=1, https://knifesteelnerds.com/2019/10/14/corrosion-resistance-testing/, https://knifesteelnerds.com/2020/03/02/cpm-spy27-experiments-toughness-corrosion-resistance-and-more/, https://knifesteelnerds.com/2018/12/03/cryogenic-part1/, https://knifesteelnerds.com/2018/12/10/cryogenic-processing-of-steel-part-2/, https://knifesteelnerds.com/2018/12/17/cryogenic-processing-of-steel-part-3/, The Pros And Cons Of Stainless Steel Copper And Aluminum Brewing Equipment SanctuaryBrewCo, https://knifesteelnerds.com/2020/05/01/testing-the-edge-retention-of-48-knife-steels/. I think they are complementary and you should watch/read both. Could you please compare it to Shirogami #1 and Agomi #1, I didnt find anything in terms of grain size ragarding thoese steels on the Internert. 1095. It can build a knife that sustains a sharp cutting edge for long periods and is sufficiently wear-resistant. Note:There is a powder-metal version called CPM154 thats purer than the non-powder version, making it easier for knifemakers to grind. A hunting knife has a singlepurpose: processing meat after akill. Non-stainless steels can be heat treated to 66 Rc or even higher depending on the particular steel. However, high wear resistance means that abrasives are used up more rapidly, more careful grinding is necessary to avoid overheating, finishing and polishing is much more time consuming, etc. Extra kudos for your mathmatical steel composition to edge holding model thats really impressive work. Rust Test includes:D2 from Bestech and WE1095 from shop8Cr13Mov from Spyderco420HC from BuckWalmart knifeY Start (Marked D2)Follow me at:Twitter: https://twi. The edge retention and ease of sharpening have been what we expect with D2. You cannot leave your 14C28N knives in water overnight and expect them not to rust. It mainly made for knife and it high in Chromium for excellent corrosion resistance. If I made some plane irons from AEB-L at 63 Rc (where its still tougher than 1095 at 59-60 Rc, the standard vintage steel in plane irons), could I drop my sharpening angle from 30-35 to 25? . They were two different tests (different batch of steel, different person heat treating, etc). Its an anomaly in the knife world and quite puzzling to use. I especially appreciate the geometry/edge retention/toughness comparison with photos. In thick forms, like a fixed blade, 1095 isa tough, low-cost steel. They make excellent everyday carry steels, especially for light- and medium-duty tasks. 14c28n vs D2 Steel. If the knife youre looking at has a 154CM blade, youre fine. 9Cr is the top end of the series and is quite good as good or better than AUS-8. I am just grasping at straws here, but from the data you shared, it seems like toughness does increase faster than edge retention decreases: it is harder to get a very high edge retention knife that will still be somewhat tough compared to a very tough knife that will still hold an edge ok. The steel is similar to Sandviks 13C26. The steel is susceptible to overheating during hardening do not overheat. Though technically not a stainless steel due to its composition, in use it performs exactly like one. H1 Become a patron and gain access to awesome rewards including early access to articles or a Knife Steel Nerds mug! CPM 4V Despite its wonderful performance, XHP is actually not terribly expensive compared to other high-end, all-around performers. Should have a first draft by the end of next week. Not to sound like a ship, but these two knife inspiration makes this an eye-catching knife. 14c28n steel has a high Chromium and Carbon percentage. 1095 stains easily and thus is often coated, especially in fixed blades. 14C28N steel is not very hard steel which makes it easier to sharpen. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Read more about how it works here. There are still a few things I dont know but we have enough information to make educated guesses where data isnt available. Where the black-finished 1.4116 version has a simple, full flat grind, the D2 version has a compound flat grind that ends halfway up the blade's height. In general, higher carbon and higher vanadium steels have higher wear resistance and edge retention but lower toughness. We have our views as well, and here they are! Softer steel usually forms larger burrs and they are more difficult to deburr. Dr. Thomas is a friend of ours here at Blade HQ, and with his help, weve worked to create this knife steel guide. Its a costly and challenging process, but it makes extremely fine-grained steels, some of the best for knives, and makes some processes that were previously impossible a reality. Notice that with the same edges on the same media, the 9Cr18Mov from Real Steel performs about as well as the average Chinese D2. Here is the article by Larrin on 48 steels. Sign up to receive GearJunkie content direct to your inbox. I have a (relatively) short introduction before getting into the ratings with a few important things to put them into context. There has been some internet controversy over the grinding and heat treat of this steel. The line is only in the neighborhood of 5 of the datapoints. This is also a powder-metal steel produced by American steel company Crucible. 8Cr13MoV still has some corrosion resistance, but not as much as D2. On the positive side, they are very easy to forge and grind. My favorites of the high edge retention group are Vanadis 8 and CPM-10V. Required fields are marked *. But among the steels youll find at Cabelas and the like, this is a pretty good choice. The majority of knives target 63 Rc or below so this limitation of stainless steels does not always come into play but can be an important factor for certain knives targeting high performance and thin edges. On the flip side D2 steel is much harder than other steels in this category such as 154CM or ATS-34 and as a result holds its edge a little better. And Ive done a lot of experimental work on knife steels where I feel more confident in my own ratings. There is no single category that means that a steel is more premium or better than another. I feel like it sharpens as easy as D2. It has high levels of chromium and carbon, making it extremely resistant to corrosion. Fine-carbide knife steels. W-2 Knife Steel Benefiting from 0.2 percent vanadium content, W-2 holds an edge well and is reasonably tough. The steel is an air-hardness tool steel that is considered semi-stainless because of its high chromium content. Below shows the results of MagnaCut testing vs other steels where it is labeled as New Steel.. quite possibly the best steel youll find on a sub-$30 production knife. One argument I see consistently leveled against 8Cr13MoV compared to AUS-8 is that of the consistency of the composition. Its probably in between Vanadis 8 and 10V. Should you continue to scroll further, you may find yourself lost in a seemingly endless list of knife steel wealth and knowledge. For the steels that I rated I give them a single rating rather than a range based on different heat treatments that can be performed. . If youre looking for all all-around best knife steel, youd be hard-pressed to find one better than Bohler Uddeholm M390. Notify me of follow-up comments by email. AEB-L and 14C28N are the best in the high toughness group. In general, steels look worse as you go up in hardness because the toughness is reduced by more than the edge retention is increased. In the context of a knife this would be chipped edges or broken knives. It rusts like nothing Ive seen before and it dull just by looking at it. The Sandvik 14C28N has a very thin and sharp blade that is perfect for slicing through things. 1) the cvn number is just that, a number. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. A mirror finish is the best at resisting corrosion and a rough finish means rust and corrosion is more likely. Im a layman trying to understand what makes the best steel for my use. Anybody know how the Sandvik stacks up against all these other steels. Its not bad, but you can find better in the market at the same price. and corrosion resistance than the 420HC steel. In many cases the cost of working with the steel for the knife companies is more significant than the cost of the steel itself. And easy to sharpen in our experience; and that will get an excellent razor edge that lasts for a reasonable price of time. 1. Corrosion is not just about cosmetics and rusting, however, but can also affect edge performance. Divers, sailors, and anglers need knives that will resist corrosion above all else. And before you start arguing on behalf of the steel you think might be perfect, let me remind you that if your knife isnt perfect for a task, youll need to get another one that is! D2 steel is more durable than 14C28N, but it scores lower in terms of ease of sharpening and corrosion resistance. The ultra high corrosion resistance steels Vanax or LC200N max out around 60-61 Rc instead. Hi there, So presumably, wear resistance would be in the 3.5-4 range and toughness in the 5.5-6 range. Each of these contributes to a knifes overall performance. AR-RPM9 Properties: 14C28N: D2: Edge retention: 4/10: 7/10: Ease of sharpening: 6/10: 3/10: Corrosion resistance: 4/10: 4/10: Toughness: Which one is right for you? Everyone has their own opinion on what they deem the best folding EDC knife. What would you rate the toughness of CPM-D2. This is a powder-metal steel also produced by Crucible. These images are taken from my book Knife Engineering. All of the experiments shown below are possible thanks to supporters. It is an excellent steel that in the right hands has proven to produce high performing blades. Steels that are higher in hardness and wear resistance are usually lower in toughness. For more information see our. Obviously Ill let you check the manuscript prior to publication. What is pulling that line high and to the right? Steels patina in the acid at varying rates which allows for one steel to etch darker than the other and show that famous patterned contrast. The brand designed it as a carbide replacement. Even premium steels can have poor performance with poor heat treatment. Steels do come at various price points, however, depending on the cost of producing them and the cost for the knife company to work with them. And a label: AEB-L. 8am-5pm Saturday. It is certainly possible for a knifemaker or heat treating company to do a heat treatment that will have suboptimal properties. 14c28n steel would be a great pick thanks to its high retention and corrosion, it would be great for a normal EDC knife. Steels like CPM MagnaCut, CPM M4, CPM 4V, and CPM CruWear fit in this category. 14C28N knife will dull faster, but it is easy to sharpen. 420HC doesnt hold an edge well, but its relatively stain-resistant and tough. However, it can be somewhat complicated because an edge can dull from many causes wear, micro-chipping, deformation, or corrosion. Below shows Vanax tempered at 400F on the left and 1000F on the right after 1% saltwater for 24 hours: There are many other ways in which knife steel performance can be reduced through heat treatment but I cant cover them all in this article so hopefully these illustrative examples will be enough. I did a test with knives in 440A (stainless), D2 (high alloy steel with some corrosion resistance), and 1095 (no corrosion resistance). In this article, we will discuss the characteristics, pros, cons, and differences between 14C28N and D2 knives to help to make the right choice. rex 121 I couldnt find much on 5160 steel and from a knife makers point of view if you are saying youre the preferred supplier of special ops than I dont understand this choice in knife steel. I do not have rust issues with it (as long as I have a good finish) some heavy stonewashed finishes rust easier. nevertheles its importand to keep in mind what exactly is going on there (abrasive plastic media, loss of most of cutting ability during the first few strokes etc.). Quite an eyeopener! Its very similar chemically to RWL 34 and ATS-34. Larrin, thank you for this. These steels favor edge retention over all else. Have you tested K390 sufficiently to be able to rate it? as you mentioned catra indicates the edge angle as being by far the most important variable. Rex 45 Is it similar but worse or better at one of the 3 things? Different heat treats have emerged over the years, but one has risen to the top as the best:Bob Doziers D2. However, the relative difference in toughness between these different examples are similar. This showed that XHP and ZDP-189 have significantly lower corrosion resistance than other stainless steels. The knives are ideal for both indoor and outdoor use. It is a Sandvik stainless steel that originally developed for razor blades. We and our partners use cookies to Store and/or access information on a device. Lots of information is still specific to this article, however. Sharpening the knives might be challenging, but the D2 knife is high quality and affordable. This is about comparing steels to each other rather than a limitation of an individual steel.
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