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by Larrin
Mon Jun 04, 2018 6:34 am
Forum: Spyderco General Discussion
Topic: CruWear and Z-Wear toughness testing
Replies: 4
Views: 1401

CruWear and Z-Wear toughness testing

New article summarizing and describing toughness testing done with knifemaker Warren Krywko where we compared Cru-Wear (ingot steel) with Z-wear (PM steel), upper and lower tempers (400 vs 1000°F), with and without cryo, and also different lengths of time at cryo (1h, 12h, and 36h). Lots of good stu...
by Larrin
Thu May 31, 2018 3:48 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

Never saw the point of it for knives, however it is cheap so it can be used in very low cost budget knives. For folders there are more than a few stainless steels that perform better, some all around better. For fixed blades, the same, both stainless and non stainless (More non stainless however) t...
by Larrin
Thu May 31, 2018 3:38 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

Ankerson wrote:
Thu May 31, 2018 3:34 pm

But for knives, there are just too many other options steel wise to bother with it.
On that point we disagree.
by Larrin
Thu May 31, 2018 3:31 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

No, it doesn't have enough carbon to draw in the Chromium to make carbides, I got that directly from the people who make the steel, it was developed that way on purpose. Anyhow I am done with this thread, not worth the effort. You may have misunderstood what the Uddeholm representative said, or per...
by Larrin
Thu May 31, 2018 3:04 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

No, it doesn't have enough carbon to draw in the Chromium to make carbides, I got that directly from the people who make the steel, it was developed that way on purpose. Anyhow I am done with this thread, not worth the effort. You may have misunderstood what the Uddeholm representative said, or per...
by Larrin
Thu May 31, 2018 2:35 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

I’m not trying to put anyone in their place. I’m just discussing steel.
by Larrin
Thu May 31, 2018 1:55 pm
Forum: Spyderco General Discussion
Topic: See you guys at Blade tomorrow...
Replies: 28
Views: 3840

Re: See you guys at Blade tomorrow...

Lucky! I haven't been in years.
by Larrin
Thu May 31, 2018 1:24 pm
Forum: Spyderco General Discussion
Topic: Sal, what are the chances for a AEB-L spydie ?
Replies: 180
Views: 24740

Re: Sal, what are the chances for a AEB-L spydie ?

I am not really sure how this whole AEB-L thing got started but from what I have seen from testing. One of the worst steels made as far as edge holding goes, below AUS-8 and BD-1 and all others people tend to complain about so it would be backtracking to before the 440C days as far as performance g...
by Larrin
Mon May 28, 2018 8:31 pm
Forum: Spyderco General Discussion
Topic: How Chipping of Edges Happens at a Microscopic Level
Replies: 11
Views: 1335

Re: How Chipping of Edges Happens at a Microscopic Level

tvenuto wrote:
Mon May 28, 2018 7:58 pm
But it has all the vees!

Very good read. Thought it ended slightly abruptly, but very informative.
Originally I had a section on toughness tests designed specifically for edges but I was already over 3000 words. Part 2 someday...
by Larrin
Mon May 28, 2018 8:29 pm
Forum: Spyderco General Discussion
Topic: How Chipping of Edges Happens at a Microscopic Level
Replies: 11
Views: 1335

Re: How Chipping of Edges Happens at a Microscopic Level

So in other words depending on the material you're cutting and how you're cutting it, it's very possible that lower carbide volume steels can maintain higher levels of sharpness longer than carbide packed steel depending on whether the steel is heat treated to take advantage of its toughness. Based...
by Larrin
Mon May 28, 2018 9:12 am
Forum: Spyderco General Discussion
Topic: How Chipping of Edges Happens at a Microscopic Level
Replies: 11
Views: 1335

Re: How Chipping of Edges Happens at a Microscopic Level

I debated whether to post it today but I have been making a habit of posting the articles to Patreon Friday and to the website on Monday so I decided to maintain consistency.
by Larrin
Mon May 28, 2018 6:17 am
Forum: Spyderco General Discussion
Topic: Sal, why is the Delica ground so thick behind the edge ?
Replies: 42
Views: 6240

Re: Sal, why is the Delica grinded so thick behind the edge ?

Poor Sal has to answer for everything.
by Larrin
Mon May 28, 2018 5:42 am
Forum: Spyderco General Discussion
Topic: How Chipping of Edges Happens at a Microscopic Level
Replies: 11
Views: 1335

How Chipping of Edges Happens at a Microscopic Level

New article on chipping of edges where I attempted to answer questions such as:

What is toughness testing actually measuring?
Is there a difference between chipping an edge in one hit vs several?
Does retained austenite lead to more chipping?

http://knifesteelnerds.com/2018/05/28/c ... -of-edges/
by Larrin
Sat May 26, 2018 8:58 am
Forum: Spyderco General Discussion
Topic: Golden, CO made Wish List?
Replies: 86
Views: 7815

Re: Golden, CO made Wish List?

I lived in Golden for a few years and I can confirm that the fresh mountain air makes the steel better.
by Larrin
Sat May 26, 2018 8:56 am
Forum: Spyderco General Discussion
Topic: 154CM - Development, Properties, and Legacy
Replies: 35
Views: 4892

Re: 154CM - Development, Properties, and Legacy

HI Larrin, Excellent article. I enjoyed the history aspects as well. You cleared up the fact that 154CM was used for high temp bearings rather than turbine blades. I did not know that RWL 34 was named after Bob Loveless but now makes obvious sense. He must have used some of it but the later knives ...
by Larrin
Thu May 24, 2018 11:17 am
Forum: Spyderco General Discussion
Topic: 154CM - Development, Properties, and Legacy
Replies: 35
Views: 4892

Re: 154CM - Development, Properties, and Legacy

So, I'd seen a few places that CPM154 is basically a whole different animal than the smelted version, and that had seemed like fanboy talk until I saw the micro photos from that article. Is that massive increase in uniformity to be found in any smelted steel that's converted to particle metallurgy,...
by Larrin
Wed May 23, 2018 9:26 am
Forum: Spyderco General Discussion
Topic: 154CM - Development, Properties, and Legacy
Replies: 35
Views: 4892

Re: 154CM - Development, Properties, and Legacy

Great article Larrin! Thanks! Spent some time reading other references on the site and found "Is Blue Super Steel Actually Super?" http://knifesteelnerds.com/2018/03/29/is-blue-super-steel-actually-super-the-facts-about-tungsten-alloyed-steels/ Makes waiting for the V-Toku2 runs even harder! Yeah t...
by Larrin
Tue May 22, 2018 2:58 pm
Forum: Spyderco General Discussion
Topic: 154CM - Development, Properties, and Legacy
Replies: 35
Views: 4892

Re: 154CM - Development, Properties, and Legacy

While I wouldn't say this article is above my pay grade, steel isn't super interesting to me personally. But one thing that surprised me from the article: I had no idea how old 154CM is (let alone 52100!). How is it that it didn't become popular in knives until roughly this century? 154CM or 52100?...
by Larrin
Tue May 22, 2018 6:19 am
Forum: Spyderco General Discussion
Topic: 154CM - Development, Properties, and Legacy
Replies: 35
Views: 4892

Re: 154CM - Development, Properties, and Legacy

As the nerdiest of all steel nerds I make my contributions where I can.

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