Knife Steel Guide - Knife Life - Blade HQ 8Cr13MoV is comparable to the Japanese AUS-8 but containing slightly higher carbon content. Maxamets hardness results in incredible edge retention and a nightmarish sharpening and machining experience. Liquid steel is sprayed through a tiny nozzle, solidifying into a powder. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. My name is Jonathan M, and Im a passionate Mechanical Engineer, a knife enthusiast, and the author of this website. This is a powder steel produced by American steel company Carpenter. 14c28n steel and D2 steel are both high-quality knife steels. Im not sure they answer my question, though, and some of your points dont seem to jive with the info here on Larrins site. D2 is another medium-range tool steel. How Good Is Nitro V Stainless Steel - Knives & Gear One argument I see consistently leveled against 8Cr13MoV compared to AUS-8 is that of the consistency of the composition. I was guessing 5.5 based on your rating of CPM-154. Compared to the AUS10A, the D2 has a longer legacy since it's been around since 1918. In nitrogen steels, nitrogen is used as the iron-hardener instead of carbon, thus limiting the possibility of rusting. I was recommended the Rat 1 in D2 and I also found that I really like the design of the Ruike p135 and p128. Who looking for latest, high carbon, then the Kershaw Natrix Copper Pocketknife. With steels that have a small amount of carbide the size of the carbides can be kept small through processing (see the AEB-L micrograph earlier in the article). you can easily buy a $500 knive made out of 14c28n, which has nothing in it besides cr and a trace of ni. Instead, Vargo titanium uses a unique material called sintered titanium-ceramic alloy. I would love to see a Tungsten-Carbide blade (like Sandrin is using) and how it compares for Edge Retention, Toughness and Corrosion Resistance especially how it compares to s90v. Im going to give the ratings first and then give more explanation about how the ratings were created. Different companies can vary some between each other making the same product, while a single company is going to be more consistent. I guess the question is whether toughness increases faster than edge retention decreases. i understand the samples were treated in the same way. By that I dont mean that a better heat treatment is not possible, but that major mistakes in heat treating are avoided. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Pretty interesting that regrinding a knife you already have can seemingly take its performance to that of significantly better steels. If you are a newbie, sharpening D2 knives will be a struggle, but it is doable with practice and the right sharpening tools. One is certainly anti-China bias, as you pointed out. The steel comes with increased wear and abrasion resistance properties. Hammering through hickory, digging at roots in sandy soil, and cutting around bone did nothing to chip, dent, or roll the edge of my 3V knives. It would be really useful to have the raw data that backs the charts that you produce. The main downside is the steel is more difficult to heat treat and can't go harder than about 60 or perhaps 61 Rc. But SM100 is not widely available, hard to heat treat and grind, and exceptionally expensive. https://knifesteelnerds.com/2018/12/17/cryogenic-processing-of-steel-part-3/. It is most useful for steels with large amounts of carbide but also helps to be able to add certain carbide types. Its a good balance between all three attributes, being relatively hard, tough, and corrosion-resistant. and corrosion resistance than the 420HC steel. Steels with only vanadium carbides have the best balance of properties because the hardness of carbide matters for edge retention but doesnt for toughness. Why do knives make the best gifts? While some are into that type of thing, if youre familiar with a specific steel and want to compare it with another, you should definitely click on that button below. It is among the best steel that will offer exceptional toughness while still maintaining excellent corrosion resistance. Vancron has a very fine microstructure so it would be tough to beat. In general, steels look worse as you go up in hardness because the toughness is reduced by more than the edge retention is increased. However, the 14c28n provides perfect edge retention with a maximum hardness of 62Hrc and the mixture of Chromium and Carbon. first there might have been some annealing going on (even if its was a microscopic level) and the steels might have reacted differently. If thats true why do you include it in the stainless steel category? Theres also a line of green triangles a bit below that. All of the experiments shown below are possible thanks to supporters. If you want to learn more than keep reading past the ratings. Edge retention is the ability of a knife to maintain cutting ability during cutting. I used to work for a company that did reclaimed old growth lumber (swamp cedar, old growth pine and oak beams, etc) and we went through planer blades twice as fast as the cabinetry shop next door (turns out the neighbors like it when you put all the loud businesses together and far away), which mostly cut fresh cherry, oak, maple, hickory etc. Often used for combat knives. 14C28N and D2 steel are not the same. My other knives are a Real Steel E77 8cr14mov. how much more can you bend/pry with it? Corrosion Resistance: D2 steel has a higher chromium content than 8Cr13MoV, which makes it better at resisting corrosion and wear. Corrosion is not just about cosmetics and rusting, however, but can also affect edge performance. D2 is carbon steel that has high toughness and durability. The knife Natrix with substantial copper handle is a deceptively hefty EDC. Each test is done with 3 or more specimens to get a good average. thanks thats interesting. Though technically not a stainless steel at least 14% chromium, and D2 usually has 12% its relatively corrosion-resistant. have extremely high edge retention. Vanax and LC200N are unique in reaching 59-60 Rc while being very stain resistant. The benefit of this, of course, is that the steel holds an edge for a very, very long time. . There are a few other complicating factors such as carbon in solution and plate martensite, especially in low alloy steels such as described in this article. Almost all of the knives in my EDC rotation are Spydercos, in exotic steels. It shows 3 stainless steels from 750-800tcc but the edge retention graph only has 1 SS in that range, S90v. However, in our testing there is a reduction in toughness by using the high temperature range rather than the low temperature range, such as was found with CPM-CruWear (Z-Wear) or CPM-10V. But a few overly vocal forgers were making claims about it that clearly were not true especially when comparing it to 5160. Are you familiar with anything similar on the metallurgy/knife steel side of things? A good quality knife must have sharpness, great edge retention, and a sturdy handle. If youre looking for all all-around best knife steel, youd be hard-pressed to find one better than Bohler Uddeholm M390. Stainless steels are more resistant to corrosion but remember that stainless steels stain less, and most of them will still rust in the right conditions. Steels high in toughness are excellent for knives likely to see hard impacts, like large chopping knives. Is 440A really that much better than 420HC, or have you found a narrower gap? Looks like there is no reason to us it over 420HC. D2 steel is more durable than 14C28N, but it scores lower in terms of ease of sharpening and corrosion resistance. Thank you for such a great article! I would think that the label applies to either the line or the outlier, but probably not both unless the outlier is a measurement error. Its found on a large number of traditional-style folders. D2 steel 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. Would love to see where S7 sits on the Corrosion/Edge/Toughness meter. No mainstream companies use SM100, and the niche makers that do usually charge more than $1,000 for knives with SM100 blades. Its tough, but thats about it. Did you change the estimate based on more testing? Only a skilled blacksmith can make Damascus steels, so they tend to be expensive. 14C28N steel is the improved version of 13C26 with better rust resistance. im led to believe tha the melting procedure is more important with these steels than the exact composition. Read our full Sobata 398 review here. Should have a first draft by the end of next week. There are significant differences between them because 14C28N is stainless steel, while D2 steel is a semi-stainless tool steel. Hi Larrin Your estimate of 420HCs corrosion resistance is different here than in your October, 2019 post on corrosion resistance testing: https://knifesteelnerds.com/2019/10/14/corrosion-resistance-testing/ However the 14c28n steel would be great for an EDC knife with typical usage. CPM-REX 121 and Maxamet are both in this category. CPM 3V The Vargo Sobata 398 is unlike any other knife on this list. Both of those things are no longer an issue as I now have way too many articles and a book. I have not provided a rating for ease in sharpening. Different types of knife steel Alleima Or, is this perhaps a historically useful practice that made sense on softer/less tough steels, but would make less sense on some newer steels that can be used at higher hardness and thus higher edge stability? It isnt impossible, but contrast may not be very good and the austenitizing temperatures of the two steels arent very compatible. There was significant sharpness loss with 1095, almost none with 440A, and D2 was in between. Different heat treats have emerged over the years, but one has risen to the top as the best:Bob Doziers D2. Or even if they try to be more open to importance of toughness, the good reputation of the high edge retention steels means that they get inflated toughness ratings along with it. I would also suggest adding a hardness rating to the ratings tables that currently include toughness, edge retention, and corrosion resistance ratings. 12C27 Typically an increase in corrosion resistance means a reduction in potential hardness for a given steel. There seem to be a lot of modern steels that get related to D2, but OTOH just saying a steel is similar to D2 seems to kill interest in it. Or is this an argument that tends to be rooted more in the presumption that Japanese steel > Chinese steel than any practical difference in reality? In fact Id be delighted to have your experience checking my thinking! in relation to hardness). For more information see our. Steel produced in China is generally less expensive. imo o lot depends on how the blade is sharpened. Like S90V, its a high-hardness steel, but its more balanced than S90V. Furthermore, because of its ultrahigh hardness, Maxamet is very prone to corrosion, probably worse than 1095. But if when youre searching for tough steel for your outdoor experience camping, or hunting, it would be perfect steel but not the best choice therere other steels with better than toughness that would suit your usage. The greatest living knifemaker and one of the greatest knifemakers of all time, Michael Walker, calls AEB-L one of his favorite steels. Spyderco has their own salt spray test setup to determine the corrosion resistance and they determined that MagnaCut is sufficiently corrosion resistant for their salt series of knives. That way you can get into the steel ratings quickly. It does have chromium but is not as sufficient as required to be a type of stainless steel. My favorites of the high edge retention group are Vanadis 8 and CPM-10V. The studies confirmed that the primary controlling factors are hardness of the steel, volume of carbides, and hardness of the carbides. When describing the characteristics of a steel, a few common attributes are commonly talked about. Any thoughts how Sleipner might fare in the ratings? The 1.4116 I tested has large carbides in it which is presumably the reason for low measured toughness: https://knifesteelnerds.com/2019/05/26/new-micrographs-of-42-knife-steels/. The only thing putting me off immediately buying the p135 is the 14c28n steel. D2 steel also resists chipping better than most stainless steel types. Stainless steels usually top out around 64 Rc and may require careful heat treating to get there. Sandvik 14C28N Knife Steel Review: Is This a Good Knife? 14C28N is a type of high-performance stainless steel used in knife-making. Also, what kind of steel is used for utility knives? Maxamet is one of two current high-hardness kings, with HRc marks in the high 60s approaching 70, a hardness usually only seen in carbide steels. We use a subsize, unnotched chapy test with 2.5 x 10 x 55 mm dimensions. D2 seems to run at high hrc. 14C28N steel, also known as Sandvik 14C28N, is stainless steel made by Sandvik, a European steel company in Sweden. I wrote an article about knife steel ratings available online in 2018, where I concluded that none of them were very good. Sure if you dont want stainless steel fine, but there are plenty other carbon steels out there much better than 5160. Because of its difficulty in sharpening and machining, its very rarely used and comes with a high price premium. How Is 14C28N Steel for Knives? Its hard to imagine a more rust-inducing environment than saltwater and fish guts. So setting edge geometry for the type of knife and intended use is very important. Its very similar chemically to RWL 34 and ATS-34. I believe they are made of simple carbon steel. Importing steel from Europe to the USA, or vice versa, generally increases the cost. 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.
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