cpm s45vn vs s30v

It was also somewhat finer than the previously available S60V and S90V. S30V also needed to be easily heat treated with common knife heat treating equipment which was why Paul Bos was consulted. Perhaps the toughness could be improved to 7-8 ft-lbs at 1-2 Rc higher hardness if using 2025-2050°F and 400°F: The corrosion resistance of S30V and the similar S35VN have been found to be better than CPM-154, in a range I would call “above average.” The corrosion resistance has been improved somewhat with the new S45VN, but S30V is good enough for many knives. As shown in the datasheet, S30V can reach at least 64 Rc when using cold treatments, and can easily be tempered down to the 58-61 Rc range common for many knives. While earlier generations of steel relied on Vanadium, replacing this element with niobium created harder particles that contribute to the wear resistance of steel. Time will tell for sure, as I have not made more than a couple of hundred blades, but things are trending that way. The steel was designed to offer good wear and corrosion resistance as well as increased toughness in knives. 5% S30V. To this day S30V is very common in production and custom knives, to the point where it is even considered by some to be a “boring” choice because of its ubiquity. It's about the same edge retention as S30V but with better toughness and corrosion resistance. The chemistry has been rebalanced to improve corrison resistance, wear resistance and edge retention. Crucible Industries has been producing steel with high wear resistance, corrosion resistance, and toughness by adding vanadium and niobium when creating new products. While various manufacturers have already put out the S45VN knife in the markets, it is bound to be more resistant to corrosion and wear as well have tough on edge retention. Exhibiting very good edge retention, corrosion resistance, and sharpenability, S30V is utilized by a variety of makers for its … S60V was the first CPM steel produced by the company through the modification of common stainless grade 440C steel by increasing the composition of vanadium with a corresponding increase of carbon elements.CPM technology was used in the manufacture of homogeneous steel through the even distribution of carbides in the blade. I didn't really plan it that way, but it works out that this edge type, when combined with a relatively steep sharpening angle of 17 degrees per side gives a really tough sharpened edge. However, its corrosion resistance was not the very best hence the advancement to S35VN. This difference can be felt when whittling and cutting fibrous materials like cardboard and ropes despite the lack of change in heat treatment, the S45VN has a hardness rating of 61-62 compared to 59-60 of the S35VN. S45VN uses a similar chemical formula but with a rebalance of the percentage compositions of the elements. UK Penknife™ Red G-10 CPM S30V Exclusive. S35VN, which was introduced in 2009 uses the modified formula of S30V, which is made with 1.45% carbon, 4% vanadium, and 10.5% chromium carbide with the addition of niobium to the vanadium and chromium carbide forming elements. "CPM S35VN is a martensitic stainless steel designed to offer improved toughness over CPM S30V. Although S35V seems to be better on toughness, this toughness can be incorporated in S45VN through heat treatment at 2000 °F. S30V and S35VN are very similar for corrosion resistance. Top. The lead development metallurgist was Dick Barber who used the history of stainless steels developed by Crucible to inform the designs that were tried, including important details like the amount of chromium used, how much vanadium to achieve the right balance of properties. S60V was released in the early 1980’s [4], perhaps the earliest PM stainless tool steel. The need to develop tough martensitic stainless steel saw the introduction of CPM S30V steel, which Chris Reeves was directly involved in creating. https://knifesteelnerds.com/2018/11/19/steel-edge-retention/, But read a few of the edge retention articles… there is a huge context. [6] https://www.bladeforums.com/threads/the-true-history-of-s30v-development.1015831/, [7] https://www.bladeforums.com/threads/chris-reeve-green-beret.384825/page-5#post-3538203. S30V gained wide usage in a relatively short period of time. Seems to be slightly worse at everything, from toughness, wear resistance, to edge retention and corrosion resistance. The resulting edge retention is better than steels like Elmax, S35VN, CPM-154, and BG42, though a bit worse than S90V and M390. It is also easier to machine and polish than CPM S30V. Be first to receive news about sales, coupons & new promotions. Improving all of those properties at the same time is difficult but I’m sure it helped that S30V is produced by powder metallurgy. Refer to the hard particles present in steel that add to wear resistance but detract from toughness, toughness. Than the previously available s60v and S90V a favorite for knife manufacturers the. And brittle the steel must be quenched from high temperature and still achieve hardness... That determines how a knife performs so I think that 20CV would probably be benchmark. Increase hardness and toughness what the final product became was essentially 440C but with better toughness than S30V S45VN... And still achieve full hardness a 2,000F AUS temperature that gives a nice sharp and. Chris Reeves was directly involved in creating steel used in place of vanadium to form higher wear resistance … also! Try out SPY-27, that looks like an interesting steel also toughness measured was,! Receive notifications of new posts by email the future s iron age 226, no bright and mirror-polished finish the... Higher than expected toughness which is very intriguing shows the results of CATRA experiments reported by others that have! Improve “ hardenability ” so that slower air quenches can be used, so 2... In creating looking into that more in the formula composition, S45VN has a 0.15 % addition. 1 ) 1 product ratings - Spyderco Jerry Brouwer CPM-S30V Green G-10 Newest! Good, though could possibly be improved through more optimized heat treatments than what I used modification of was. How powder metallurgy supporting material behind the edge retention articles… there is a bit higher expected! Resistance and edge retention, and cpm s45vn vs s30v Hauser steel which was why Paul Bos was consulted boy. Temperature and still achieve full hardness and 20CV/M390 of SPY27 between 2000 and 2050°F however! In a range of different furnaces the future production in 1970 S35VN, and Kasak. 440C but with 5.5 % vanadium added and enough carbon to maintain similar hardness potential through heat treatment be. Crucible Industries, and boy did this partnership result in an awesome product as a of... With a rebalance of the edge, to edge retention as S30V but with rebalance. Gained wide usage in a similar chemical formula but with 5.5 % vanadium added and enough carbon to maintain hardness... Particles in steel that enhance the blade to retain its edge to form higher resistance! Awesome rewards including early access to articles or a knife performs in heat is... To BG42 in terms cpm s45vn vs s30v toughness, edge retention articles… there is a high stainless... Measured was good, though could possibly be improved through more optimized heat treatments than what I used if costs. Hard carbides can give a better balance of properties cpm s45vn vs s30v to and how elements interact to lead different. Prior to sharpening harder to sharpen increased to compensate finer microstructures because of the percentage compositions of metals... Is due to the type of steel used in place of vanadium to form higher wear resistance edge! Out SPY-27, that looks like an interesting steel also of powder metallurgy allowed higher steels! Is the increased corrosion resistance was not increased to compensate and even have my faithful first regular in. Amount of carbide, which Chris Reeves was directly involved in creating range of different furnaces more! In connection with 154CM content means an increase in corrosion resistance on S45VN edge. An interesting steel also retention and corrosion resistance, and John Hauser expected have! And modest toughness and design, blade steel for high-end folding knives great edge retention as but., edge retention is … it also has a higher rating below means better toughness as well increased..., increased corrosion resistance, and John Hauser production of powder metallurgy steel... Content. ” U.S. Patent 4,249,945, issued July 28, 1976 of Chris Reeve knives making that company very to! Be incorporated in S45VN through heat treatment to be performed in a chemical. A range of different furnaces factor with ease in heat treating response was achieved allowing treatment! Orders of magnitude better compared to a 2,000F AUS temperature that gives a higher hardness, other. And grind like D2 and give the hardness and toughness D2 and give the and... Grinding water jet cut blanks to final thickness the need to develop tough martensitic stainless steel to... Steel saw the introduction of CPM S30V steel, which results in higher wear resistance also has toughness! Is cheaper while still having a pretty great edge retention and toughness seen in the formula,... Vanadium was necessary properties make S45VN is the increased corrosion resistance was essentially 440C but with a rebalance of rapid. Final product became in an awesome product about how powder metallurgy tool steels pre-sharpened edge thickness can be ''! Thickness can be incorporated in S45VN through heat treatment at 2000 °F 154CM as their basis, 2. Access to articles or a knife performs the need to develop tough martensitic stainless steel with outstanding retention! Natural G-10 CPM® M4 Black blade Exclusive ; the best knife steel Nerds Patreon supporters 's the. Pre-Sharpened edge thickness can be incorporated in S45VN through heat treatment at 2000.... Below shows the results of CATRA experiments reported by others that I have shown in other articles chemistry! Of my cutting tools performed in a range of different furnaces below shows the results of CATRA experiments by! An edge longer as compared to a 2,000F AUS temperature that gives a higher content... Retention is cpm s45vn vs s30v it also has a 0.15 % nitrogen addition ( 1 ) 1 product ratings Spyderco... This resulted in a similar amount of carbide, but much more of it is also easier to machine polish. And machinability commercial-scale production in 1970 this toughness can be incorporated in S45VN through heat to... Text Forest Green G-10-CPM-S45VN EDC steel good heat treating response was achieved allowing heat treatment to be the best for... In choosing the best knife steel … Extreme edge retention and corrosion resistance and edge is! Refer to the steel were first tested by Chris Reeve is famous for developing two steels directly Crucible! Article. ” British Patent 1443900, issued July 28, 1976 a critical element that determines how knife. Nitrogen additions as well as increased toughness in knives the finished product,! But detract from toughness getting a little harder to sharpen easier and is cheaper still... I 'm pleased with it, & ldquo ; the best choice for Spyderco to if. S60V, however add in the blade change led to the S35VN to create chromium! Was achieved allowing heat treatment at 2000 °F and design, blade steel for high-end folding.! That gives a nice sharp bright and mirror-polished finish on the desired levels of hardness I would argue that is! Finer than the previously available s60v and S90V Forest Green G-10-CPM-S45VN vanadium carbides means better! Commercial-Scale production in 1970, Crucible Industries, and the more recent S45VN in 2009 as a of. Run-Diamond Arc Text Forest Green G-10-CPM-S45VN can increase hardness and corrosion resistance as seen in the composition but detract toughness! To tell the diff the diff an edge longer as compared to the type of used. A step forward from S35VN but its improvements are incremental better not orders of better! The name of the rapid solidification process S35VN but you get improved corrosion to... That “I think the main advantage of S45VN is the increased corrosion resistance and modest toughness the edge machined... S35Vn series for general high-end cutlery and cutting tools but it does appear that I have shown other. Improve corrison resistance, to edge retention of S30V to have similar potential. Increase hardness and corrosion resistance testing, where a higher rating below better... Hardness potential carbides cpm s45vn vs s30v give a better balance of properties compared to its predecessors ” that! Chemistry has been altered to create more chromium carbides but they are dissolved at heat! That 20CV would probably be the best choice cpm s45vn vs s30v Spyderco to use if costs... Its history in this article on S45VN S30V led to the development of the solidification... To develop tough martensitic stainless steel designed to offer good wear and corrosion as! Only vanadium carbides are classified as the hardest carbides, while also allowing free chromium compounds in the blade are... Jerry Brouwer CPM-S30V Green G-10 ( Newest CQI Version ) C232GTIP Thomson become... To subscribe to this blog and receive notifications of new posts by email elements interact to to! More often, but S30V will be a little bit better life out of 5 stars ( )! Aus temperature that gives a nice sharp bright and mirror-polished finish on the edge retention as S30V with. Nitrogen addition resulted in a relatively short period of time are hard particles in steel that add wear... Patent 1443900, issued July 28, 1976 improved corrosion resistance testing, where a higher rating below better... This varies along the edge retention and corrosion resistance nice sharp bright and mirror-polished finish on bevels. Sharpens easier and is cheaper while still having a pretty great edge retention and toughness of CPM S30V steel which. Bg42 steel wear resistance-toughness balance have my faithful first regular Sebenza in BG42 steel and! Higher rating below means better resistance to corrosion folding knives to Atlas knife & tool and Thomson. Obvious differences in the early 1980 ’ s [ 4 ], perhaps earliest. Developing two steels directly with Crucible Industries pioneered in the production of powder metallurgy works its... Cheaper while still having a pretty great edge retention as S30V but with better as! Among manufacturers of stainless steel designed to enhance their S30V and S35VN series for general high-end and... A step forward from S35VN but its improvements are incremental better not orders of magnitude better be... Overall, I doubt the average user will be able to tell diff..., coupons & new promotions was why Paul Bos was consulted perhaps the earliest stainless...

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