Category: Powder Metallurgy

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Corrosion Resistance, My Knife Steels, Powder Metallurgy, Steel and Knife Properties, Toughness

Testing Erasteel MagnaCut (vs Crucible Original)

Larrin

Crucible, Niagara, Erasteel, and MagnaCut

In case you haven’t been following steel news, Crucible Steel went through a bankruptcy and no longer exists. I interviewed Bob Shabala of Niagara Specialty Metals about this transition several months ago. Niagara is the company that purchased ingots from Crucible and would hot roll, anneal, and distribute them to knife companies and steel suppliers. They have also recently started a new online store to better sell directly to individual knifemakers. Niagara has managed to keep production going for a wide range of Crucible (and other) knife steels, including: 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

Carbides, Corrosion Resistance, Niobium-Alloyed, Nitrogen-alloyed, Powder Metallurgy, Steel and Knife Properties, Super Steels

What is the Future of Stainless Knife Steel Design?

Larrin

Thanks to Aram Compeau, Gordon Olafson, and John Walton for becoming Knife Steel Nerds Patreon supporters! I have an update on Patreon about the “rare earth” elements in AR-RPM9 steel.

I completed a minor revision to my new book Knife Engineering to correct a few typos. Some readers outside the USA also asked for more conversions from Fahrenheit than were present originally, so I incorporated both Celsius and Fahrenheit everywhere in the book in the text and tables, though some images and charts still have only one temperature scale or the other.  I wouldn’t say that the changes in the revision are big enough to buy a new one if you have it already, this is not a new edition, but if you haven’t purchased one yet this is as good a time as any. read more

Damascus, Powder Metallurgy

The History of Powder Metals in Damascus Steel

Larrin

Gratitude

Thanks to cbw, Doug Siddens, Nick Dunham, and Robert Martin for becoming Knife Steel Nerds Patreon supporters!

I interviewed several knifemakers for this article. Thanks to Ed Schempp, Hank Knickmeyer, Steve Schwarzer, Rick Dunkerley, Jim Batson, Shane Taylor, Jeff Carlisle, Kelly Cupples, Daryl Meier, John Davis, Matt Diskin, Wade Colter, Barry Gallagher, Howard Clark, Bob Kramer, and Devin Thomas for talking to me. read more

History - Articles - Books, Powder Metallurgy, Steel and Knife Properties

All About D2 Steel – Development, Use in Knives, and Properties

Larrin

Thanks to Robert Erickson, knifeandgear_swiss, Dale Bushness, and Paul Hart for becoming Knife Steel Nerds Patreon supporters!

Update 10/22/2020: I now have an article with how to heat treat D2, PSF27, and CPM-D2 and it also includes toughness testing of each steel and edge retention testing of D2. https://knifesteelnerds.com/2020/08/31/how-to-heat-treat-d2-psf27-and-cpm-d2/ read more