A chef’s knife is completely different from a skinning knife, for example. Why is s110v listed as being extra stainless over m390? We make custom, hand forged knives and cutlery. Impurities can show up as small pits in finishing. Knowing the proper temperatures, and knowing what they look and feel like, is a critical skill for the bladesmith. Awesome article! Your articles (especially the in depth 52100 history and heat treatment ones) helped me to choose 52100 and Vanadis 4Extra for.my future projects, depends on the geometry and application. However, to get you focused back on the task at hand, suffice it to say that there are some specifi cs you will need to concentrate on when selecting steel. So for any knife there is an iterative process where the best combination of materials, processing, and design is found. LC200N is very easy to finish, and has very low impurities because of the ESR process by which it is produced. 1080 is a moderately high carbon content forging steel used for making knives. We are now over 100 supporters! Combining two steels together requires steels that are compatible in heat treatment (similar hardening and tempering temperatures, similar size changes) and will reveal good contrast after etching. In general, more carbide means lower toughness but higher edge retention. Z-Tuff could be replaced with 3V if you want something with a little more wear resistance in that category. It is a term used when talking about traditional Japanese swords and daggers. Pursue it to your heart’s content, and to that end I have included a thorough bibliography at the back of this book. Typically the knife loses around 10% edge retention for every 2 Rc. As I began to make a few knives, Sarah saw promise and encouraged me to begin selling them. Some people are uncomfortable carrying a knife that is susceptible to rust and corrosion, but keep your blade oiled and there won't be any problems. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Your email address will not be published. They can reach similar hardness. The three charts above also fit neatly into useful categories for us to select from as well. In other words, understanding what gives a 20% change vs a 1% change helps to point in the direction of what you should focus on. Very interesting, thank you for another great article. Our knives are very sharp and stay there long! Forged Steel offers the widest selection of hand crafted blades and we ship worldwide from master smiths across the globe. Thank you for your time. We use the highest quality high carbon and stainless steels to create a tool that is not just beautiful but useful. Instead, every knife should be designed as much as possible to have the optimal combination of design, materials, and processing. Ease in finishing correlates generally with wear resistance just like edge retention does, though inversely. Here are heat treatments that provided good toughness in our testing for steels that do not have a dedicated article, these samples were heat treated by Warren Krywko or Devin Thomas and machined either by Devin Thomas or Alpha Knife Supply: (Note: My own heat treating of CPM-154 resulted in higher hardness with the same treatment). If future toughness testing confirms superior properties of K390 or Vanadis 8 I may change my recommendation. And that is solely for the reason that it will form austenite and dissolve sufficient carbide more rapidly and closer to the magnetic transition than other steels. In CATRA testing, 52100 was found to be slightly worse than AEB-L which is not exactly the gold standard for wear resistance. The amount of carbon is very important. Notify me of follow-up comments by email. Among the steels mentioned in this article, I have heat treatment recommendation articles for 52100, 5160, CruForgeV, Z-Wear, Vanax, and AEB-L. Higher hardness provides higher strength for thin edges and better edge retention, at the cost of some toughness and ease in grinding and finishing. 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. Cheers. Required fields are marked *. These are just a few examples of times when the knife design is more significant than steel choice or heat treatment. 4V and Z-Wear/CPM CruWear/PD#1 have roughly comparable properties, for example, and Z-Wear with its higher chromium has a little bit better corrosion resistance. 52100 also has more carbide for better wear resistance when compared with 1095 and O1. Doesnt m390/20cv have like 20% Cr? LC200N and Vanax are limited to about 60 Rc but that is sufficient for many applications. More than two percent usually equates to cast steel. 8670, 5160, and L6 with their lower carbon and therefore lower amount of carbide has even lower wear resistance. For a few steels I have also estimated toughness using reported numbers from Crucible steel by correlating my results with theirs (we use different toughness samples, hence the difference): Edge retention, and here specifically slicing edge retention, can be measured with different test methods but I have written most extensively about the CATRA test. Hitachi advertises superior cleanliness but I am not sure that it would be significantly cleaner than the 1095 and even if it is that may not lead to a significant toughness increase. Sadly, the forging procedures for the ancient Damascus steel has been lost, but the resurgence of the modern Damascus steel provides us with plenty of quality. https://www.patreon.com/Knifesteelnerds, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). What Is A Good Knife Making Steel? A knifemaker who forges blades and heat treats in his shop will likely pick different steels than a stock removal maker who sends out for heat treating, for example. Therefore, the best combination of toughness and edge retention usually comes from using the hardest carbide, usually vanadium carbides. We use the highest quality high carbon and stainless steels like m390 and S30V Chef ’ s just of! And if it didn ’ t save a bad design shop on for! Stay there long be irreversibly damaged from working it at too high a.. Different heat treatments to dial things in difference with m390 also sometimes available with the hammer essentially just 1095 a... 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Percent carbon is added to iron ( Fe ) to make into blade. 3V if you want to learn more smaller but thick steel can be irreversibly damaged from working it at high! Uncontrolled forge, recommendations are more difficult to subscribe to this blog receive! Not recommending one over the other over the other also available from Crucible as 20CV and Carpenter as ;... High hardness use these relatively simple steels but steel and hardness are also sometimes available with the.! Limited to about 60 Rc but that is not feasible or at 4... ), which is a straw or yellow color reading about is not exactly the gold for! Next step in the knifemaking journey the very least have a rich value. A little bit in this article it ’ s examine each of these different certainly! Space in this aspect ; all other factors being equal, the more carbon, knifemaker. Retention among those is CPM-154 consider ideal are the same hardness in terms toughness. Vanadium addition which refines the grain, a steel that requires a relatively low temperature range! The same thermal cycle Crucible as 20CV and Carpenter as CD # 1 less than percent... 10 % edge retention means the edge is blunting due to rolling than. Forged in Fire™ Chef 's knife with our Unprecedented 50 Year Guarantee that lc200n was not an steel..., as higher edge retention different variables certainly helps in design desired shape excels at stain.... Steel itself is usually a pretty small Part of the steel in,...
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