S30v vs s90v steel

CPM S90V® is a unique tool steel made by the Crucible Metallurgy process. It is a martensitic stainless steel with a high volume of vanadium carbides for exceptionally good wear resistance. S90V offers substantial improvements in wear resistance over 440C and D2, and other high chromium tool steels. Its corrision resistance is equal to or better than …

Jan 13, 2023 · S90V has less hardness compared to the 20 CV. Plus, 20 CV steel also has better toughness, edge retention capability, and more resistance to corrosion. But the S90V has superior wear resistance and also is easy to sharpen. Both of these steels are expensive, but 20CV is costlier. If I were you, I would have read the full article to find out the ... Jan 25, 2021 · Coarse and polished edge results both! No data on S90V, unfortunately. The somewhat-similar S110V looks hair lower in toughness than 20CV at ~62.5 HRC. I wouldn't claim anything conclusive about S90V without actual data, but the S110V data does suggest that toughness-wise, it should be in the ballpark of 20CV. S90V and M390 are premium steels, but M390 makes better high-end knives because it wins in toughness, corrosion resistance, and ease of sharpening. However, you must consider your knife needs when choosing between S90V and M390 knives. In this article, we will look at the properties of S90V steel and M390 steel and their pros …Both S90V and M390 are considered premium steel. They offer great balance in toughness, wear resistance, edge retention, and corrosion resistance. M390 steel offers better toughness, corrosion resistance, and ease of sharpening. Both M390 and S90V offer an equal level of edge retention. S90V and M390 are premium steels, but M390 makes better ...Aug 17, 2020 · S60V vs M390 and S90V. M390 appears to be the hot steel these days for folders, with people seeming to like it for its relatively high edge retention along with good ease in sharpening for that level of edge retention. S60V has yet higher edge retention and probably is not much more difficult to sharpen. S90v and M4 steel will go head to head today, and the winner will be revealed. Both S90v and M4 steel have the same degree of retaining edge. When compared to S90v steel, however, the M4 steel is inferior in toughness. Once again, the fact that M4 isn’t manufactured from stainless steel means it won’t hold up better to wear.S30V and S90V are two steels that don’t disappoint in this aspect. Both are highly durable steels that can take a beating. As for the tougher steel, S30V takes the lead, but only to the slightest degree. S30V steel’s toughness is measured at around six ft-lbs, whereas S90V rates five ft-lbs.It's more corrosion-resistant than S30V is, and it performs quite well compared to Elmax, S35VN, and even M390. The lead picture is a knife with S45VN, and it has functioned as promised. Even...

CPM MagnaCut is produced by Crucible and hot rolled and distributed by Niagara Specialty Metals. This is the same production and distribution path used by other CPM steels like S45VN, S30V, S35VN, 20CV, S90V, etc. So the steel will eventually have full availability through steel suppliers and to knife companies.if you sharpen steel yourself, choose s30v. s30v is tough to sharpen. s90v is even more difficult to sharpen. if you send them to the manufacturer to sharpen, get s90v. it will hold an edge longer and it will not matter to you how long it takes to sharpen.Pros Cons M390 knife Characteristics Pros Cons How To Choose Between The S90V And The M390 Intention For Knife Usage Price What Makes a Good Quality Knife? Final Thoughts S90V and M390 are …Aug 17, 2020 · S60V vs M390 and S90V. M390 appears to be the hot steel these days for folders, with people seeming to like it for its relatively high edge retention along with good ease in sharpening for that level of edge retention. S60V has yet higher edge retention and probably is not much more difficult to sharpen. Prices for steel pipe can range from a couple dollars per foot, as of 2019, up to a few thousand dollars, depending on the gauge and diameter you need, as shown on the Columbia Pipe price list. In addition to pipe size and construction, som...

If you know how to sharpen, S30V takes less time to get sharp and keen, and can be run more acutely. S90V takes more time and effort to sharpen to the same keeness and sharpness (duh). Either can be made to do well against cardboard/ wood/ rope, but not at the same time unlike AEBL and sandviks.I would suggest the s90v because it has better edge retention. of the 3, however I don’t think you can go wrong with either. on a side note, the ergonomics of the altitude fit my hands good, and the jimping has a lot of grip; placed in critical and usable areas. weighs 2.5oz total with sheath.The steel is the innovative version of Crucible’s S30V steel, both of these steels belong to the SxxV series of the company. ... However, S35VN falls weak in edge retention in front of S90V. CPM S35VN vs S110V. Both of the steels show great performance in all the steel aspects but they do have certain differences. S110V steel …SPY27 is just another attempt to alter certain aspects of S30V to meet customer feedback. People used to complain that it was hard to sharpen, and so there was a lowering of carbon and metal contents to increase the grindability of the steel. Now many say S30V is "easy" to sharpen.S30V and S90V are two steels that don’t disappoint in this aspect. Both are highly durable steels that can take a beating. As for the tougher steel, S30V takes the lead, but only to the slightest degree. …

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CPM-S30V: The very first steel ever designed for use as a pocket knife blade, CPM-S30V was a refinement of similar steels like S90V and S60V, renowned for their high vanadium content, which creates very strong vanadium carbide, freeing up chromium to aid in corrosion resistance. Developed by Crucible in collaboration with acclaimed …S90V steel doesn’t rust easily. It offers great corrosion resistance and there’s a reason for that. Firstly, this steel contains 14% Chromium, which is more than the volume needed to make it stainless. Secondly, the more vanadium carbides in its alloy free up the chromium carbides to offer corrosion resistance.May 26, 2010 · if you sharpen steel yourself, choose s30v. s30v is tough to sharpen. s90v is even more difficult to sharpen. if you send them to the manufacturer to sharpen, get s90v. it will hold an edge longer and it will not matter to you how long it takes to sharpen. S90v has some huge changes in its chemical composition if we compare it with S110v. S90v has 2.3% Carbon which is approx 21.5% lower than the S110v which has 2.8% of Carbon. Carbon makes steel hard and also enhances its ability to bear any wear/tear. 14% Chromium is ideal in both steel types. There is a huge effect of …S90V steel doesn't rust easily. It offers great corrosion resistance and there's a reason for that. Firstly, this steel contains 14% Chromium, which is more than the volume needed to make it stainless. Secondly, the more vanadium carbides in its alloy free up the chromium carbides to offer corrosion resistance.S30V: A well-balanced stainless steel known for its toughness, edge retention, and corrosion resistance. S30V is commonly used in mid to high-end knives. While both steels perform well, CPM 20CV has higher wear and corrosion resistance compared to S30V. ... CPM 20CV vs S90V. CPM 20CV: Known for its wear and …

K390 is a high-end premium high-alloy steel with extremely high performance. This cold work steel has high hardness and is a popular reliable choice. ... The main difference is that you get higher hardness …CPM MagnaCut is produced by Crucible and hot rolled and distributed by Niagara Specialty Metals. This is the same production and distribution path used by other CPM steels like S45VN, S30V, S35VN, 20CV, S90V, etc. So the steel will eventually have full availability through steel suppliers and to knife companies.Sep 26, 2022 · Both S90V and M390 are considered premium steel. They offer great balance in toughness, wear resistance, edge retention, and corrosion resistance. M390 steel offers better toughness, corrosion resistance, and ease of sharpening. Both M390 and S90V offer an equal level of edge retention. S90V and M390 are premium steels, but M390 makes better ... Mar 25, 2021 · CPM MagnaCut is produced by Crucible and hot rolled and distributed by Niagara Specialty Metals. This is the same production and distribution path used by other CPM steels like S45VN, S30V, S35VN, 20CV, S90V, etc. So the steel will eventually have full availability through steel suppliers and to knife companies. SPY27 is just another attempt to alter certain aspects of S30V to meet customer feedback. People used to complain that it was hard to sharpen, and so there was a lowering of carbon and metal contents to increase the grindability of the steel. Now many say S30V is "easy" to sharpen.The most notable difference between these is the addition of Niobium in S35VN alloy. Niobium makes S35VN more tougher than S30V steel . S35VN CPM steel is also much easier to grind and machine than S30V due to its finer grain structure. S35VN VS S90V. CPM S90V steel offers better edge retention than S35VN.Re: S110V vs S90V. Postby Ankerson » Fri May 22, 2015 4:21 pm. S110V will have more abrasion resistance, real world use in my own experience over a variety of knives. I also believe S110V is tougher, but that could be subjective. S110V will cost a lot more per foot AND processing knife blades. Availability will depend on runs, schedules etc.My understanding is the same, with 20CV being an American version of the m390. I think the m390/20cv would be better for lighter duties with less need for maintenance while the s30v is better for tougher cutting tasks. This is why I went with the m390 Ritter Mini ifor my EDC and the s30v PM2 for my workhorse. D.Mar 10, 2023 · S30V VS S90V: Some Similarities. Steels S30V and S90V are both incredibly strong. They both have good resistance to wear and tear. Both steels are brittle. Their hardness, toughness, and flexibility vary, but they are used in the same applications. S30V is 58–61 HRC while S90V is 60–64 HRC in terms of hardness. Dec 3, 2015 · My understanding is the same, with 20CV being an American version of the m390. I think the m390/20cv would be better for lighter duties with less need for maintenance while the s30v is better for tougher cutting tasks. This is why I went with the m390 Ritter Mini ifor my EDC and the s30v PM2 for my workhorse. D. Final Thoughts. S45VN steel is better than S30V steel. The improved fine-grained structure of S45VN stainless steel alloy provides better corrosion resistance and edge retention than S30V. The improved performance is attributed to the increased chromium content and the addition of Nitrogen in its alloy. S45VN knives offer better performance ...Vaugith • 2 yr. ago. First, the same steel can have different hardness depending on how it is heat treated. Second, S90V is harder to sharpen than S30V not because of hardness, but because of its composition. Vanadium is included in both of these steels. When enough Vanadium is in a steel, it bonds with some of the carbon content and forms a ...

S90V vs S30V steel. For edge retention over time, the S90V steel knives are clear winners here. For ease of sharpening, the S30V wins. With a Rockwell hardness scale rating of 58 - 61, both steels are so close in hardness that depending on the heat treatment of the steel they could be called equivalent. S90V vs M390 steel

S90V, patent filed in 1995 [5], managed to improve on wear resistance, toughness, and corrosion resistance of S60V but its high wear resistance, and therefore poor grindability, means that it has never been …The most notable difference between these is the addition of Niobium in S35VN alloy. Niobium makes S35VN more tougher than S30V steel . S35VN CPM steel is also much easier to grind and machine than S30V due to its finer grain structure. S35VN VS S90V. CPM S90V steel offers better edge retention than S35VN.Both S90V and M390 are considered premium steel. They offer great balance in toughness, wear resistance, edge retention, and corrosion resistance. M390 steel offers better toughness, corrosion resistance, and ease of sharpening. Both M390 and S90V offer an equal level of edge retention. S90V and M390 are premium steels, but M390 makes better ...Difficulty to Sharpen. When it comes to sharpening difficult, the comparison between VG10 vs S30v steel is interesting. Where VG10 makes up for that low edge retention is its simplicity to sharpen back to perfect performance. Many novice knife users comment on how easy it is to bring VG10 back to great sharpness with fairly basic sharpening tools.Jan 25, 2021 · Coarse and polished edge results both! No data on S90V, unfortunately. The somewhat-similar S110V looks hair lower in toughness than 20CV at ~62.5 HRC. I wouldn't claim anything conclusive about S90V without actual data, but the S110V data does suggest that toughness-wise, it should be in the ballpark of 20CV. Everything depends on heat treat of course. But S90v is much harder to sharpen than 20cv, it’s more prone to chipping, and when it loses its fine edge, it has the tendency to become toothy. Which isn’t necessarily a bad thing, just depends on what you want. 20cv is all around the much better steel imo. 6. Jan 3, 2023 · Conclusion. In conclusion, S30V steel is a powder metallurgy steel with better alloy composition and better performance than VG 10 Steel in edge retention and wear resistance. S30V has higher carbon content at 1.45% compared to the VG 10 steel’s 1.05%. This carbon content gives it higher Rockwell hardness and wear resistance while enhancing ... By substituting niobium carbides for some of the vanadium carbides, CPM S35VN is around 15-20% tougher than CPM S30V without any loss of wear resistance. The improved toughness of this steel also gives it better resistance to edge chipping. Both vanadium and niobium carbides are harder and more effective than chromium carbides …The closest steel to our K390 would be the S90V Stainless Steel, in exception for corrosion resistance (S90V offers a better corrosion resistance compared to the K390), they both offer great edge retention and hardness due to 9% of Vanadium in both steel, Same for the wear resistance, and they both fall in the same price range of high-end steel.

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20cv is an equivalent of m390 if I'm not mistaken and will have better edge retention and corrosion resistance. Sharpening should still be able to be done with a sharpmaker but obviously reprofiling or removing major damage will be very difficult without pretty abrasive rods but the same can be said for s30v and s35vn. 20cv is an improvement in my opinion.Pros Cons M390 knife Characteristics Pros Cons How To Choose Between The S90V And The M390 Intention For Knife Usage Price What Makes a Good Quality Knife? Final Thoughts S90V and M390 are …The S in its name stands for ‘Stainless’ while the V stands for ‘Vanadium’. The numbers are mere indicators of difference from other varieties like the s90v. The S30V steel is tougher than the 154cm variety and is known for its exceptional hardness. Just like the 154cm, it is a corrosion-resistant variety due to its stainless steel nature.S30V VS S90V: Some Similarities. Steels S30V and S90V are both incredibly strong. They both have good resistance to wear and tear. Both steels are brittle. Their hardness, toughness, and flexibility vary, but they are used in the same applications. S30V is 58–61 HRC while S90V is 60–64 HRC in terms of hardness.Spyderco Native 5 in SPY27. The bones of the Native 5 LW (LW: lightweight) are exceptional — light, compact, and slice-y. The clip, a standard spoon-style Spyderco clip, could use an update, but ...M390 is mostly chromium carbide (17.5%) and less volume of the more effective Vanadium carbide (2.5%) Compared to S30v (10.5%) chromium carbides and (4%) Vanadium Carbides. When the M390 was at the same hardness as S30V, M390 cut more. M390 is not like S90v which can cut longer at slightly lower HRC in controlled wear cut …Knives There are two types of s90V steel plates, which are S90V-1 and S90V-2. They have similar chemical compositions but their tensile strengths differ slightly. The difference between them lies in their heat-treatment process.Difficulty to Sharpen. When it comes to sharpening difficult, the comparison between VG10 vs S30v steel is interesting. Where VG10 makes up for that low edge retention is its simplicity to sharpen back to perfect performance. Many novice knife users comment on how easy it is to bring VG10 back to great sharpness with fairly basic … ….

When it comes to edge retention, S90v steel is far better than S30v steel as it can stay sharp for an incredible amount of time. However, S30v steel is much easier to sharpen, and some people find it to be a more practical option for a knife you intend to sharpen yourself. S90v SteelThis is also a powder-metal steel produced by American steel company Crucible. Like S90V, it's a high-hardness steel, but it's more balanced than S90V. Spyderco ...0.03%. CPM S90V Knife Steel has remarkable wear-resistance and corrosion-resistance qualities! One aspect of knives using Crucible CPM S90V is the cost. This alloy is very hard on grinding belts and the machines that use them, transferring that cost to the end product. That being said, the almost cult-like following of those collectors wanting ...At A Glance. In a head-to-head comparison between 154CM and S30V knife steels, both options offer advantages and disadvantages depending on the user’s needs. S30V boasts superior hardness, edge retention, and corrosion resistance, making it a harder steel that delivers more bang for the buck. However, 154CM wins in terms of toughness ...Everything depends on heat treat of course. But S90v is much harder to sharpen than 20cv, it’s more prone to chipping, and when it loses its fine edge, it has the tendency to become toothy. Which isn’t necessarily a bad thing, just depends on what you want. 20cv is all around the much better steel imo. 6. Prices for steel pipe can range from a couple dollars per foot, as of 2019, up to a few thousand dollars, depending on the gauge and diameter you need, as shown on the Columbia Pipe price list. In addition to pipe size and construction, som...The ease of sharpness in steel goes hand in hand with hardness. SPY27 is hard steel but not extremely hard; therefore, sharpening is not a big challenge. However, it is not on the list of easy to sharpen steels. It has its challenges and especially if you are not seasoned in sharpening. SPY27 vs other steels Spy27 vs S30V vs S35VNCRUCIBLE CPM® S30V® Issue #1 Carbon 1.45% Chromium 14.00% Vanadium 4.00% Molybdenum 2.00% CPM S30V D2 440C 154 CM CPM CPM CPM CPM 3V S90V 9V 10V CPM Steel Conventional Steel Elastic Modulus 32 X 106 psi (221 GPa) Density 0.27 lbs./in3 (7.47 g/cm3) Thermal ConductivitySep 28, 2020 · Hardness. S90V and S125V are capable of rather high hardness, approximately 66 Rc given an appropriate heat treatment. The two steels have relatively similar “as-quenched” hardness or with a low temper of 300°F, though S125V seems to have somewhat better tempering resistance (hardness is higher with a 400°F temper). S30v vs s90v steel, Jan 4, 2023 · The main difference between s30v vs. s90v is the edge retention and sharpening ease. That is because the s90v will stay sharp for a long time, but it is much more difficult to sharpen, as it is harder steel. On the other hand, the s30v is easier to sharpen, but it will quickly lose its edge retention. Of course, if you intend to sharpen it ... , Taking a look at Spyderco's prices, you're probably going to be looking at an added $20 from S30V to S90V and another $20 from S90V to S110V, but that's just a rough guess. The other issue is that knife companies tend to bling out the knives with better steels. Take Steel Will. They do D2 and M390 versions of the same knives. , S30v steel is easier to sharpen than s90v steel, but this is not by much. We would say s30v steel’s ease of sharpness is about average. S90v Steel VS M4 Steel Corrosion Resistance . S90v steel is more corrosion resistant than its M4 counterpart. Edge Retention. When it comes to edge retention, then S90v steel and M4 steel perform the same way ... , For example, S30V - a relatively affordable "super steel" - is one of those ... or-death matter. It's kinda ironic that these days, we use it for EDC knives ..., Aug 11, 2023 · S90V. S90V achieves a score of 57-59 HRC on the Rockwell hardness scale, which identifies it as hard (hardened) steel and provides durability to the metal. The majority of every day and premium-quality knives available today are made from this type of steel. However, the steel is comparatively softer than the M4. , CPM 154 and 154 CM are two completely different beasts. CPM 154 is on par with S30V, as it is the powder steel version of 154CM, but anyone who says 154CM is 'better' than S30V is doing so because of sentimental value of 154CM on a certain knife, rather than an objective perspective. 154CM has more or less the same toughness as S30V, but less ..., Niobium (Columbium) This comparison conveys that Maxamet goes for extreme edge retention while sacrificing properties in other areas; while the S110V steel aims for consistency in all areas. The S110V is often cited as the most similar steel type with the Micro-Meld Maxamet steel. 6.00% Vanadium. Edge Retention. 10/10., 11,409. Mar 16, 2011. #2. First thing to note: S30V is usually heat treated to Rc 57-59 range, and sometimes in the Rc 59-60 range. That is how hard the steel is and can affect edge holding and wear resistance. M4 is somewhere in the Rc 63-65 range and is much harder than other steels. Stain resistance isn't that much higher than 1095 though., Aug 16, 2021 · While S30V cant hold an edge for long like S110V it is much easier to sharpen and offers better toughness than S110V hence less prone to chipping and cracking. Also Read CPM Rex 121 Steel Review, a steel with a hardness of 71HRC. S110V vs. S90V. Both S110V steel and S90V steel contains similar high level of Vanadium content. , S30V and S90V are two steels that don’t disappoint in this aspect. Both are highly durable steels that can take a beating. As for the tougher steel, S30V takes the lead, but only to the slightest degree. …, Steel seawall panels are an essential part of any seawall project. They provide the strength and durability needed to protect your shoreline from erosion and wave action. But what should you look for when purchasing steel seawall panels for..., S90v in the Spyderco Fred Perrin PPT is also a great performer and surprising favorite. You might enjoy a K2 in 10v. Super slicy and CPM 10v is in the K390 ballpark. NCJohn62 Spyderco • 3 yr. ago. S90v, it's pretty …, 08-Jan-2021 ... CPM-S30V: The very first steel ever designed for use as a pocket knife blade, CPM-S30V was a refinement of similar steels like S90V and S60V, ..., The main difference between s30v vs. s90v is the edge retention and sharpening ease. That is because the s90v will stay sharp for a long time, but it is much more difficult to sharpen, as it is harder steel. …, When it comes to the differences between the two, here’s the TL:DR version: S30V is a higher-tier knife steel compared to D2. It generally has higher corrosion resistance, toughness, ease of sharpening, and edge …, A key difference between S30V and S35VN steel is their toughness. S35VN steel is generally considered to be tougher than S30V steel, which makes it a better choice for larger knives. The increased toughness of S35VN steel allows it to withstand slight heavy use and abuse more effectively without chipping and breaking, making it a …, if you sharpen steel yourself, choose s30v. s30v is tough to sharpen. s90v is even more difficult to sharpen. if you send them to the manufacturer to sharpen, get s90v. it will hold an edge longer and it will not matter to you how long it takes to sharpen., Jan 13, 2023 · S90V has less hardness compared to the 20 CV. Plus, 20 CV steel also has better toughness, edge retention capability, and more resistance to corrosion. But the S90V has superior wear resistance and also is easy to sharpen. Both of these steels are expensive, but 20CV is costlier. If I were you, I would have read the full article to find out the ... , Aug 11, 2023 · S30V. The S30V uses similar alloy materials to the S90V. The only distinction between them is the concentration. This powerful and tough steel is rich in Chromium, Vanadium, and Molybdenum. As a result, the steel is super strong and produces premium-grade kitchen cutlery, scout knives, custom knives, and pocket knives. , S30V vs M390 – Complete Comparison Hardness. The hardness of a steel directly impacts its wear resistance and edge retention. S30V has a Rockwell hardness …, If you are planning to buy knives, you must have definitely heard of CPM s110v and s30v. These are some of the most popular products from the Spyderco Military Knife. However, there have been a lot of rumors stating that s110v steel is better than s30v. Therefore, to help you make a better decision by clearing this confusion, we did some research and …, I would suggest the s90v because it has better edge retention. of the 3, however I don’t think you can go wrong with either. on a side note, the ergonomics of the altitude fit my hands good, and the jimping has a lot of grip; placed in critical and usable areas. weighs 2.5oz total with sheath., First, S90V is made with a vanadium-based alloy while M390 contains a higher concentration of chromium. This gives S90V better edge retention than M390. However, M390 is easier to sharpen than S90V and has better corrosion resistance. In terms of hardness, both steels fall in the high range on the Rockwell scale., Toughness: As the rule always say you can’t have Hardness, Corrosion Resistance and Toughness in one steel, our S30v Offers High hardness and Corrosion resistance, therefore it toughness isn’t at the same level, but it doesn’t mean it’s bad, it has a decent toughness. Heat Treatment: Austenitize 1950°F (1065°C). Quench to below 125°F ..., S30V and S90V are two different types of steel used to make knives. Both are strong, durable steels, but they have different properties. S90V is high-speed steel …, CPM MagnaCut is produced by Crucible and hot rolled and distributed by Niagara Specialty Metals. This is the same production and distribution path used by other CPM steels like S45VN, S30V, S35VN, 20CV, S90V, etc. So the steel will eventually have full availability through steel suppliers and to knife companies., S60V vs M390 and S90V. M390 appears to be the hot steel these days for folders, with people seeming to like it for its relatively high edge retention along with good ease in sharpening for that level of edge retention. S60V has yet higher edge retention and probably is not much more difficult to sharpen., Both 20CV and S30V steels are known for their excellent edge retention, but 20CV steel offers better edge retention. According to Crucible Industries, both 20CV and S30V steel can achieve a Rockwell Hardness of 58-61, however, 20CV steel has a higher volume of Vanadium Carbides. This means that 20CV has harder carbides and is able to …, Glad you asked. I like high edge retention. S90V, S110V, MAXAMET, ZDP-189, K390. And if I were looking for a knife with high edge retention I'd pick one of those over Magnacut, not S30V. Now S30V vs S35VN vs S45VN I'd take S30V because the advantages of the others aren't compelling enough, and I'd rather have the edge retention., Jul 1, 2021 · S30V steel offers a great balance in terms of toughness, edge retention, and corrosion resistance. It is often considered premium steel and highly preferred in the making of knives. To note, Crucible Particulate Metallurgy S30V (CPM S30V) and S30V are the same steel. In recent years, there have been advances to make the best combination of ... , S90V has less hardness compared to the 20 CV. Plus, 20 CV steel also has better toughness, edge retention capability, and more resistance to corrosion. But the S90V has superior wear resistance and …, 11,409. Mar 16, 2011. #2. First thing to note: S30V is usually heat treated to Rc 57-59 range, and sometimes in the Rc 59-60 range. That is how hard the steel is and can affect edge holding and wear resistance. M4 is somewhere in the Rc 63-65 range and is much harder than other steels. Stain resistance isn't that much higher than 1095 though., Knives There are two types of s90V steel plates, which are S90V-1 and S90V-2. They have similar chemical compositions but their tensile strengths differ slightly. The difference between them lies in their heat-treatment process.