Knife Steel Nerds
Knife Steel Nerds
  • 30
  • 948 833
False Advertising - AR-RPM9 Knife Steel
We investigated AR-RPM9 to test whether the company's claims about it are true. They aren't.
Written version of the information in this video: knifesteelnerds.com/2024/05/10/ar-rpm9-knife-steel-is-false-advertising/
00:00 Announcement of AR-RPM9
01:23 Composition
06:23 Powder Metallurgy?
10:52 Properties
13:41 Malice or Stupidity?
Переглядів: 39 131

Відео

Wootz - The True Damascus Steel?
Переглядів 104 тис.21 день тому
Wootz Damascus steel is literally legendary for its performance - it can cut a silk scarf out of the air. How does it compare to modern steels and pattern-welded Damascus steel? Written version of this video's information: knifesteelnerds.com/2024/04/22/wootz-the-true-damascus-steel/ 00:00 Introduction to Wootz 02:56 Composition and Hardenability 08:14 Microstructure 10:04 Toughness 12:15 Edge ...
Matrix Steels K888 and CPM 1V - Age of the Hyper Steel?
Переглядів 12 тис.2 місяці тому
Bohler released a new non-stainless powder metallurgy steel called K888 which is advertised as having extremely high toughness even at hardness levels of 64 Rc. I tested it as well as the very similar, older CPM-1V to see how they compare with other knife steels. Written article for this information: knifesteelnerds.com/2024/03/11/matrix-steels-k888-and-cpm-1v/ 00:00 Intro and History 03:33 Adv...
Vanadis 60 Super High Speed Steel - 70 Rc and 7% Vanadium
Переглядів 5 тис.2 місяці тому
New study by myself and Malachi Chou-Green looking at Uddeholm's Vanadis 60, a powder metallurgy high speed steel that reaches 70 Rc and has 6.5% vanadium. We tested its properties and found how it compares to other super high speed steels like Maxamet and Z-Max. Written version of this information with citations: knifesteelnerds.com/2024/02/29/testing-super-high-speed-steel-vanadis-60/
Testing Chinese Knife Steel - Actually Good? (8Cr13MoV)
Переглядів 42 тис.4 місяці тому
New testing of Chinese knife steel 8Cr13MoV/8Cr14MoV! I previously had ratings of this steel but had not tested it, so we got to find out if I am good at predicting properties. Written version of this article: wp.me/p9J9w4-20m 00:00 Intro 00:37 8Cr13MoV Name and History 06:45 Getting the steel was impossible 09:50 Heat treating and hardness 12:03 Microstructure and macro segregation 16:26 Tough...
Europe vs USA Knife Steel (Powder Metallurgy)
Переглядів 10 тис.5 місяців тому
A new set of tests using Z-Wear (same as CPM-CruWear) made by powder metallurgy companies in both USA and Europe. I tested a whole bunch of coupons from each to make sure the results are good. And I compared with previous tests I have done between European and American PM knife steels. Article version of this video with links to the prior studies I referenced: wp.me/p9J9w4-1ZN 00:00 Europe Says...
Innovators that Changed Knife Steel
Переглядів 8 тис.6 місяців тому
Read The Story of Knife Steel to learn more about steel and knife history. PDF: payhip.com/b/p5l8N Paperback: www.amazon.com/Story-Knife-Steel-Innovators-Damascus/dp/B0C4MM5LPL/ Hardcover: www.amazon.com/Story-Knife-Steel-Innovators-Damascus/dp/B0C4MRFFCN/
Most Important Property for Knife Steel? Q&A
Переглядів 12 тис.7 місяців тому
New Q&A video with questions from Patreon supporters. Go to Patreon.com/KnifeSteelNerds if you want to support knife steel research. Links to articles discussed in the video: www.nature.com/articles/srep41459 knifesteelnerds.com/2023/07/13/does-damascus-outperform-super-steels-testing-different-combinations/ knifesteelnerds.com/2022/06/23/how-to-heat-treat-80crv2/ knifesteelnerds.com/2021/02/08...
What is Next After MagnaCut? Q&A
Переглядів 28 тис.8 місяців тому
You asked questions and I answered them! Article/video about cryo: knifesteelnerds.com/2022/01/11/how-cold-for-cryo/ Article/video about Damascus: knifesteelnerds.com/2023/07/13/does-damascus-outperform-super-steels-testing-different-combinations/ Article/video about thermal cycling: knifesteelnerds.com/2021/08/28/how-to-thermal-cycle-knife-steel/ Article/video about heat treating in a forge: k...
Testing Damasteel - Powder Metallurgy Damascus
Переглядів 12 тис.8 місяців тому
Damasteel claims they have the highest performance Damascus. Is it true? The Story of Knife Steel book: knifesteelnerds.com/2023/05/09/new-book-the-story-of-knife-steel-innovators-behind-modern-damascus-and-super-steels/ Written version of this video: knifesteelnerds.com/2023/08/31/damasteel-heat-treatment-and-properties/ 00:00 Damasteel Development 00:44 Steels used in Damasteel 01:59 Microstr...
Damascus vs. Super Steels - Testing a Dozen Different Damascus Steels!
Переглядів 45 тис.10 місяців тому
Nearly every experiment we did on Damascus was a surprise. Damascus performance sometimes lives up to the legends, and other times it can fall down. Links to purchase The Story of Knife Steel book: knifesteelnerds.com/2023/05/09/new-book-the-story-of-knife-steel-innovators-behind-modern-damascus-and-super-steels/ Support more knife steel research on Patreon: www.patreon.com/Knifesteelnerds Writ...
New Book! The Story of Knife Steel (My Biggest Project Ever)
Переглядів 4,4 тис.Рік тому
Paperback: www.amazon.com/Story-Knife-Steel-Innovators-Damascus/dp/B0C4MM5LPL/ Hardcover: www.amazon.com/Story-Knife-Steel-Innovators-Damascus/dp/B0C4MRFFCN/ PDF: payhip.com/b/p5l8N Links for Amazon Europe on KnifeSteelNerds: knifesteelnerds.com/2023/05/09/new-book-the-story-of-knife-steel-innovators-behind-modern-damascus-and-super-steels/
K390 - The Best High Edge Retention Knife Steel?
Переглядів 48 тис.Рік тому
I finally finished my testing of K390 so I can compare its properties to other popular knife steels. Written version of this information: knifesteelnerds.com/2023/04/11/k390-best-high-wear-resistance-steel/ Support future knife steel research on Patreon: www.patreon.com/Knifesteelnerds 00:00 Intro 00:05 K390 Composition and History 00:51 Hot Hardness 02:51 K390 in knives 03:18 Bohler's Claims a...
Secrets of Nickel Knife Steels - 15N20, 8670, L6, and More!
Переглядів 11 тис.Рік тому
What nickel does to steel, how to heat treat nickel knife steels, how they compare, and much more! Written article with links and other information: knifesteelnerds.com/2023/03/22/how-to-heat-treat-nickel-knife-steels-15n20-8670-l6/ Knife Engineering book: knifesteelnerds.com/2020/07/22/new-book-knife-engineering-steel-heat-treating-and-geometry/ 00:00 What nickel does to steel 00:53 15N20 stee...
New M390MK Knife Steel?
Переглядів 9 тис.Рік тому
Microtech announced a new knife steel - M390MK. Different than regular M390. What is it? What are the properties going to be? Should you be excited? Written version of this information with references: knifesteelnerds.com/2023/02/14/what-is-m390mk-knife-steel/ 00:00 Intro 00:19 Description from Microtech 02:04 The Name 02:30 Composition 06:27 Effect of carbon 07:37 Evaluating Microtech Claims 0...
A Rival Knife Steel Metallurgist?!?
Переглядів 11 тис.Рік тому
A Rival Knife Steel Metallurgist?!?
Z-Tuff and CD#1 - The Toughest Knife Steels?
Переглядів 8 тис.Рік тому
Z-Tuff and CD#1 - The Toughest Knife Steels?
Do Knifemakers Know How to Heat Treat?
Переглядів 70 тис.Рік тому
Do Knifemakers Know How to Heat Treat?
Is a New Bohler Knife Steel Coming?
Переглядів 6 тис.Рік тому
Is a New Bohler Knife Steel Coming?
New Research on Nitrogen Knife Steels - It Doesn't Look Good
Переглядів 10 тис.Рік тому
New Research on Nitrogen Knife Steels - It Doesn't Look Good
The Problem with Nitrogen Knife Steels
Переглядів 8 тис.Рік тому
The Problem with Nitrogen Knife Steels
How to Heat Treat 80CrV2 Knife Steel
Переглядів 44 тис.Рік тому
How to Heat Treat 80CrV2 Knife Steel
What is the Best Hardness for MagnaCut Knives?
Переглядів 79 тис.2 роки тому
What is the Best Hardness for MagnaCut Knives?
Do You Need Cryo for a Good Heat Treat?
Переглядів 33 тис.2 роки тому
Do You Need Cryo for a Good Heat Treat?
Larrin Defends MagnaCut while Eating Spicy Wings in Front of Two Ferns
Переглядів 13 тис.2 роки тому
Larrin Defends MagnaCut while Eating Spicy Wings in Front of Two Ferns
Mister Neighbor Rates Knife Steels
Переглядів 169 тис.2 роки тому
Mister Neighbor Rates Knife Steels
Can a Metallurgist Heat Treat with a Forge?
Переглядів 20 тис.2 роки тому
Can a Metallurgist Heat Treat with a Forge?
How to Thermal Cycle Knife Steel
Переглядів 26 тис.2 роки тому
How to Thermal Cycle Knife Steel
Which Quenching Oil is Best for Knives?
Переглядів 53 тис.2 роки тому
Which Quenching Oil is Best for Knives?
CATRA Edge Retention Tester
Переглядів 11 тис.4 роки тому
CATRA Edge Retention Tester

КОМЕНТАРІ

  • @AG-en5y
    @AG-en5y 16 хвилин тому

    ❤❤❤

  • @imhigh0013
    @imhigh0013 31 хвилина тому

    Thank you for citing the distinct differences.

  • @garyk4017
    @garyk4017 6 годин тому

    Olight bundles a tripod for only $1 extra during their current sale.

  • @Pharto_Stinkus
    @Pharto_Stinkus 10 годин тому

    Regardless of the specifics and details, the biggest disappointment with AR-RPM9 has been it's performance. I own 3 knives in this steel, and have been underwhelmed - performance-wise - by all of them. I will not buy any more.

  • @xwngdrvr
    @xwngdrvr 11 годин тому

    I prefer to think you ruined science for this knife. Priorities.

  • @user-db4qg9vx8s
    @user-db4qg9vx8s 13 годин тому

    Amazing video. So informative and impressed with your knowledge

  • @progunliberal
    @progunliberal 14 годин тому

    You were right that their incompetence was the issue, which I certainly think isn't as damning as outright lies. For what artisan charges for their knives, which generally have pretty good actions versus "bad China" knives, I'd say if their marketing matched reality, they still are producing knives way better than Gerber crap that has worse steel, worse actions, and worse QC.

  • @jasonscott7803
    @jasonscott7803 21 годину тому

    👍✌️⚒️

  • @cynic5581
    @cynic5581 День тому

    I love how including unwanted byproducts in the metal is what contributes to it being false advertising. Quality control be damn, just don’t mention what’s not intentional. That way you’re “not” lying….😂

  • @dlmullins9054
    @dlmullins9054 День тому

    True Wootz (The legendary one) is made from an ore found only in Jordan, which was exported to Damascus Syria centuries ago and had a certain content only that Jordanian ore has. Saladin used it for his armies weapons which really helped the Muslims take back Jerusalem during the Crusades. This is the famous steel with the perfect iron ore content which made swords and knives of that time so sought after. The true Wootz Damascus. I am lucky enough to have two of those swords and both have the makers mark of which i am trying to research now.

  • @davidgarrett5671
    @davidgarrett5671 День тому

    Have to thank you for your videos over the years but once you came up with your own product you should have moved on and stopped episodes like this or at least thrown a disclaimer. You are no longer independent. Also “false advertising” is a legal, if there is no specific language that can pointed to in court it does not become false advertising. As one other person pointed out it may be a translation problem. Finally, and this is something I’ve noticed with lots of UA-cam influencers, it doesn’t appear you made any attempt to contact Artisan Cutlery and share your findings with them. This is what professionals do. If they don’t respond then just say you received no comment from them. Also you might want to run your statements past an attorney. Maybe Crucible will cover it.

  • @davewebster5120
    @davewebster5120 День тому

    Are powder steels ones made through 3d printing? This is great stuff!

  • @breoganlopez3943
    @breoganlopez3943 День тому

    I really really love your videos man, what a nice talk you make me laugh like a child, i love the challenge science vs marketing, totally busted🎉🎉🎉❤❤

  • @strykr2028
    @strykr2028 День тому

    Great video. Ive been a "knife guy" my whole life. Ive always been skeptical of 8Cr13 in favor of AUS-8 for any production knife under $60. My primary experience with 8Cr is in the (semi)newer Kershaw knives, and I have never owned one that the blade tip didn't break off under normal use. Ive been super curious about its makeup for years, its cool to finally see how it performs. Seems like Kershaw just does a less-than-ideal heat treat on it. ill stick with my Spyderco Para or Onatrio Rat folder(if you can find them now)

  • @MrAness
    @MrAness День тому

    Love it. Do you export to South Africa?

  • @harrisquicksilver6595
    @harrisquicksilver6595 2 дні тому

    Dr Thomas we appreciate ur humbleness but no matter what we support u over any other metallurgist. U are our guy to the end.

  • @Nervii_Champion
    @Nervii_Champion 2 дні тому

    Wootz steel has to have a certain percentage of Vanadium and other metals in it, because what Saladin had mined was around the area of Damascus, which had trace amounts of Vanadium in the iron ore.

  • @blackrasputin3356
    @blackrasputin3356 2 дні тому

    I could tell by the original post that it was a garbled chinese translation. Why are you even reviewing chinese knives/steel to begin with?

  • @Cleatus546
    @Cleatus546 2 дні тому

    I ty to avoid chinese made products as much as possible