Category: Austenitizing

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Annealing, Austenitizing, Cryo, Heat Treating and Processing, Normalizing, Quenching, Tempering

Introduction to Knife Steel Heat Treating from a Metallurgist

Larrin

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Intro

I have many articles about all of the nitty gritty details of heat treating and the metallurgy behind every step. However, there may be some cases where knifemakers are afraid of all of the terminology and science and think heat treating is too complicated for them. When it comes down to it, the steps of heat treating are not particularly difficult. When you follow a recipe for how to make cookies you don’t need to know the science behind every step, but following them will still get you cookies at the end. An expert would know what went wrong if your cookies were too crunchy, too puffy, spread out too much, etc. And how to modify the recipe to change the flavor and texture of the cookies. However for most of us we will just follow the recipe. You can do the same thing with heat treating knife steel! So for this article I will tell you how to follow a datasheet. I will include some links to articles with more information about what happens in each step, but you can get to those when you are ready. Another great place to learn more about heat treating is my book Knife Engineering: Steel, Heat Treating, and Geometry. read more

Austenitizing, Cryo, Damascus, Powder Metallurgy, Steel and Knife Properties

Damasteel Heat Treatment and Properties

Larrin

Thanks to the new Knife Steel Nerds Patreon supporters! The newly performed research in this article is all paid for through Patreon funds, such as the purchase of expensive Damasteel. Patreon money is only used for knife steel research. Sara Rempelos, Theo N, Christopher Kuehl, Dirk Hoogenbosch, Nick, nats spawnee, Krisztián Szegi, Todd Ellner, Seth V, Jonathan Graham, Ben Secrist, Drew Certain, Scott Armstuts, Ronald Justin Agee, Jim Darnall, Chris G, Farrell K., Bill Behnke, Paige, Luis Hernandez, clockworkfish, Barry Gordon, KarRawr, Ming Lin, Theodore Loach, Matt Bobchin, Flo, J.T. Pouland, Mark Watt, 愷麒 王, and Nickolay Matershev. read more

Austenitizing, Normalizing, Toughness

Knife Steel Metallurgist Juha Perttula

Larrin

Thanks to the new Knife Steel Nerds Patreon supporters! Steve, Bruce Blake, Michael Glaser, James F Khoury, Paul Horner, and Shane Sibert.

Intro

Juha Perttula has a doctorate in metallurgy and he has published several studies in scientific journals on heat treating knife steels. So for this article I want to feature not just an individual study but a person’s work. His studies have focused on traditional bladesmithing, low alloy and carbon steels, and wootz Damascus. He also makes and sells knives which you can read about at his website, juhaperttula.com. Juha’s website also has links to the articles I will be discussing below, and I recommend you read them in addition to my commentary. read more

Austenitizing, Cryo, Edge Retention, Edge Stability, Hardness, Heat Treating and Processing, Tempering, Toughness

What is the Best Hardness for MagnaCut Knives?

Larrin

Thanks to the new members of our Knife Steel Nerds Patreon community:

Chris Hancock, Chad Morris, Edward Voss, Liam Gogley, Erik Turner, Nathan Raptis, Nick Dunham, Joe Busic, Will Red Five Forge, Dmitry Kiyatkin, Edward Edmonds, Asinelli, Mattew Reagan, Nate, Dan Barrett, Malachi Chou-Green, Nats Spawnee, McKenzie Kelsay, Jantz Supply, Adam Webb, Brian Baley, Blade HQ, and Mark Demshock. read more

Austenitizing, Quenching, Tempering, Toughness

How to Heat Treat 8670

Larrin

Thanks to George Walton, Josh Perdue, Bill Fitzgerald, and Donovan Phillips for becoming Knife Steel Nerds Patreon supporters!

Podcasts

I appeared on two podcasts this past week, Knife Perspective and Mark of the Maker. Knife Perspective I had been on before so we mostly focused on MagnaCut and other topics. Mark of the Maker was a full interview asking about my background before discussing my book, website, and CPM MagnaCut. So listen to one or the other or both depending on what you’re in the mood for. read more