The vanadium leads to the formation of vanadium carbides and increases the hardness of the chromium carbides, and both of those improve wear resistance and edge retention. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Hunting and tactical and survival knives have also opted to use this steel for similar quality experience purposes. Reprofiling is harder because VG10 really likes to roll over and form a burr, while 14C28N does not, and is somewhat more wear resistant. Our best fixed blade survival knife list often leads many consumers down the Google rabbit hole, attempting to learn more about what each specification means and how much it matters to the overall knife quality. This makes VG10 harder than most stainless steel types. SG2 is a bit higher in toughness than S30V but below S35VN, putting it about in line with S45VN.
Grade 3 (SG2) was a step below any of those, followed by the relatively poor values of D2 and 440C (6 and 7). They have a range of “V-series” steels like V1, V2, V-Toku1, V-Toku2, V-Gin1, and the “V Gold” series which includes VG10 . Therefore in slicing tasks that lose sharpness due to wear we would expect SG2 to be a bit below S35VN. This steel is based on VG-10 steel and essentially an improved version of it.
, Learn how and when to remove this template message, "VG-10: The gold standard of Japanese stainless steel", https://en.wikipedia.org/w/index.php?title=VG-10&oldid=969488209, Articles needing additional references from November 2015, All articles needing additional references, Articles with unsourced statements from March 2016, Creative Commons Attribution-ShareAlike License, This page was last edited on 25 July 2020, at 18:54. Available knives in this steel: Robert Herder knives with the exception of the stainless steel knives. And as you guess, the Fallkniven A1 uses VG10 steel. Tough and impact-resistant, these steels are most often found in axes and hatchets. It is a small notch below 440C which is about in line with where it would be expected based on its volume of chromium carbide: I do not have an experimental value for edge retention of SG2, but it can be estimated using its carbide content and composition. VG10 steel is almost always laminated between 2 layers of softer and more stainless steel.
This medium-carbon, low-alloy steel grade is tough and hard. Neither sample showed any corrosion. Read more about corrosion resistance here. Presumably they ended up with SG2 to favor higher hardness and wear resistance. Thanks for this! To compensate that, the VG 10 is much easier to sharpen though. Common grades used in the production of Damascus steel include 15N20 (L-6), O1, ASTM 203E, 1095, 1084, 5160, W-2, and 52100. Just like VG10 steel SG2 / SGPS steel is almost always used laminated.
X50CrMoV15 is the most commonly used stainless steel type for kitchen knives by a.o. This is a high-end, bearing grade stainless alloy made with high carbon content. If you are someone who reads survival knife reviews, then you have likely done a lot of additional research on knife specifications, components and typical verbiage used during the reviews.
The edge retention was estimated using the method described in this article.
Damascus steel refers to a process whereby two different steel grades are forge-welded together and acid-etched to create steel with unique and eye-catching patterns.
The questions were really ramped up after my recent Fallkniven A1 survival knife review, which put on display one of the best survival knives on the market. That increases the hardness and cutting characteristics. They also performed a “natural weather exposure” test in the far right column which was given a rating by circles, triangles, or x. Cutlery-grade stainless generally contains more than 13 percent chromium, the oxide of which helps to form a passive film that protects against corrosion and staining.
So if you are looking at two survival knives that each have one of these distinct metals making up the blade, the VG10 version is better. They are interested in the high tempering range in case the steel is used for coatings or other applications requiring high tempering resistance. Higher values mean better toughness. It may be that the carbide volume itself is more the limiting factor for these steels. It is the driving factor that will affect your knife’s overall quality, usability, how long it last and the price. Crucible powder metallurgy (CPM) high vanadium-content steel. Molybdenum helps to improve corrosion resistance and therefore can make up for somewhat reduced chromium. VG-10 (Takefu Special Steel Co., Ltd.) is one of the most popular and highly regarded Japanese Stainless Steels for making cutlery. They performed the corrosion test with two tempering temperatures: 200°C and 500°C. Here’s the thing, my favorite survival knife is a Bear Grylls. The rust resistance is overall good, but VG10 steel is more sensitive to pit corrosion than steel types with lower carbon content. That said if you can afford it, or, if this is a knife you truly want to possess only one of, or, it’s a prestigious gift for someone special, VG10 steel is the way to go. Have a SHTF plan?
This makes VG10 harder than most stainless steel types. We cover alternative health, financial, political, and survival news.
That benefits the resistance against corrosion while the hardness is good too. Buy Now: $162. Other steels which are as good or better, including 14C28N, have been introduced or become popular since. You can read more about those carbides in this article. And seeing the Fallkniven A1 cost a pretty penny, that led many to wonder if VG10 steel is really that great. It effectively springs steel with added chromium to increase hardenability. A high chromium content stainless (14 percent) that contains molybdenum and vanadium, which enhances the toughness, corrosion resistance, and edge holding ability. Never place knives in VG10 steel in the dishwasher and never leave them in the sink. VG10 is more wear resistant, but tends to roll over, which hurts cutting performance just like wear/blunting does. 440A (and similar grades including 425M, 420HC, and 6A). W. Mo.
The vanadium carbide is relatively low because of the interactions with chromium which limit vanadium carbide formation. They should, though. Increasing the materials to further improve an already famous steel like VG-10 steel is the ultimate reason behind this advanced steel’s discovery, maximizing the output product. Available knives in this steel: Eden Kanso Aogami. I heat treated the two steels using the approximate standard temperatures recommended on the Takefu website. We now have over 150 supporters! The blade will resist rusting. Terence Bell wrote about commodities investing for The Balance, and has over 10 years experience in the rare earth and minor metal industries.
The oddest part of VG10 is the cobalt addition; I explored the reasons for its addition in this article. So I ran the steels through some of my common experiments.
440A is used in many production knives because of its edge retention, ease of resharpening, and corrosion resistance. AG10 steel is made in Japan. Or a somewhat inaccurate estimate of alloy in solution from Thermo-Calc. VG-10 Knife Steel. It has the highest content of alloy elements of all powder steel types.
That means the steel would have been developed in a similar time to 154CM. However, VG10 looks closer to 440C than it does 19C27. Find out how you can achieve more! It is up to you, the consumer, to negotiate which factors matter the most and then decide if AG10 steel is the right blade steel for you. The 14-15% Cr probably came from their previous VG steels.
The more chromium the more carbide is formed. Would ignoring the manufacturer recommendations and heat treating it based on previous experience with 440C or 12C27 (both of which have a long history in Japanese kitchen knives) lead to a brittle blade? Machinability: The VG10 is very machinable and easy to grind. VG1, VG2, and VG5 all have 14% Cr and VG10 15% Cr. This allows for a very uniform distribution of carbides throughout the steel structure during solidification. The VG … This grade can be treated cryogenically to improve edge retention. ... ATS-34 is a high carbon and chromium stainless steel that contains molybdenum to increase hardness. SG2 is still higher than VG10, 440C, and CPM-154 in terms of wear resistance, however. and thus must have (or outsource to) a fairly sophisticated heat treatment shop. Midway USA. Knife Steel FAQ.URL: zknives.com/knives/articles/knifesteelfaq.shtml. Vanadium carbides are harder than the standard abrasive aluminum oxide which means that polishing steel with significant amounts of vanadium carbide is more difficult, whether for finishing a blade or sharpening to high grit. Does it require a longer and/or hotter temper than similar stainless steels without the Cobalt? Just like VG10 steel MC66 / ZDP-189 steel is almost always used laminated. VG-10 belongs to a group of steels called "Cobalt Steels”, but it also contains Vanadium, which improves its strength, toughness and edge retention. A Swedish made stainless, 12C27 is composed of an alloy similar to 440A. The website states that VG10 was developed for knives “over 60 years ago”  and with the current website having been … The core issue with AG10 is that it ramps up the manufacturer’s production costs and of course, that cost is passed on to you. D2 and SKD11 are names for the same powder steel. Very similar to the ATS-34 and 154CM grades but with a higher vanadium content, this steel behaves equally as well but with more stain resistance and toughness. AUS-6 is softer but tougher than ATS-34. A widely used group of stainless steels. M390 measured better for toughness but I am still not sure why M390 did as well as it did in this toughness test, more experiments are coming. 440C (and similar grades including Gin-1, ATS-55, 8A). While the obvious drawback of non-stainless carbon steel is that it rusts more readily than stainless steel, carbon steels can be differentially tempered to provide hardness and excellent, sharp edges. Get Up To 95% Off Today! When a rust spot occurs it must be ground/polished off to prevent that the corrosion continues. The Fallkniven A1 I believe to be the best survival knife on the market if you don’t account for price and the blade’s AG10 steel is a big part of why that is. It has shown excellent wear resistance and edge retention and is tougher than most stainless steels, such as ATS-34, although less so than other non-stainless grades. This puts it in line with other high carbide stainless steels.
It is one of the best quality japanese stainless steel for kitchen knife today. And the vanadium addition for an improvement in wear resistance without an excessive addition. Notify me of follow-up comments by email. If you are a knife seasoned knife connoisseur, then you probably have a firm understanding of every term and spec. Subscribe to our newsletter and stay informed.
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