CPM Prototype Steel

[Larrin]

Gonna need the IDs of some of those blue dots, doc

I don’t want to shame all the crappy stainless steels and make the plot so messy. But all of the data is on my website such as the steel ratings article.

[sal]

Hey Larrin,

A little off topic, (sorry Shawn), but I would like for you to share your thoughts on the effects of Tungsten on blade steels? What it does and how more might be better, plus the down sides?

We can begin another thread if that's what you, Shawn and the "forum family" want?

sal
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"Continual improvement is our evolutionary obligation to humankind".

[SpyderEdgeForever]

Sal I am so glad you mentioned tungsten and Larrin I am interested in your reply to sal.Hall and several others in the molecular manufacturing and nanotechnology world were big advocates of tungsten carbide knives for both the sporting and other industries. Our grand dream ofcourse was to see steel alloys be complimented by Diamondoid Composites that flex like metal but never shatter or crack. I believe there will always be a place for good steel.

As you and others know, some companies have been edging into the world of tungsten W folders.

The biggest hurdles have been:

1 cost
2 fragility of tungsten carbide.
3 sharpenability.

As forum member David asked, how easy or hard would field sharpening be?

Some advocated and even wrote a paper on this. They said a composite of tungsten carbide with Fullerene Carbon nanotubes would give the WC the necessary fracture toughness to overcome the danger of cracks and shattering. But as far as I know no experimental samples have yet been made.

[WilliamMunny]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

So reading between the lines, “historically it’s been difficult to get stainless up to the orange line”. But now, like you did with MagnaCut, maybe the new stainless steel is at the orange line but leaning towards edge retention?

[N. Brian Huegel]

Here are a few articles that Larrin did regarding tungsten alloys:

https://knifesteelnerds.com/2020/05/18/ ... el-1-2562/

https://knifesteelnerds.com/2018/03/29/ ... ed-steels/

https://knifesteelnerds.com/2024/02/29/ ... anadis-60/

https://knifesteelnerds.com/2022/09/06/ ... ife-steel/

nb

[Synov]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

Gonna need the IDs of some of those blue dots, doc

Larrin may not want to shame them but I will

[gooeytek]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

Gonna need the IDs of some of those blue dots, doc

Larrin may not want to shame them but I will

you...da man.

[Barmoley]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

Gonna need the IDs of some of those blue dots, doc

Larrin may not want to shame them but I will

K390 seems to be mislabeled.

[Synov]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

Gonna need the IDs of some of those blue dots, doc

Larrin may not want to shame them but I will

K390 seems to be mislabeled.

Yeah, i think that should be ZDP-189, thanks for catching that.

[sal]

Thanx Brian,

I appreciate your doing the hunt. Also appreciate Larrin doing the work.

sal

[RustyIron]

This is interesting. But all we laymen know at this time is that there are talented guys playing with some kind of mystery metal. What we're eagerly waiting for is a clue or two, like the area on the catra/toughness chart where the mystery metal is testing, or what the intended goal is with this project.

[sal]

Hi Ruaty Iron,

We all have your curiosity, but we all have to be patient. I did see some CATRA test being done, and it looked good so far, though the test was still being conducted. I'm sure the information will be available soon.

sal

[Deadboxhero]

This is interesting. But all we laymen know at this time is that there are talented guys playing with some kind of mystery metal. What we're eagerly waiting for is a clue or two, like the area on the catra/toughness chart where the mystery metal is testing, or what the intended goal is with this project.

Screenshot 2024-11-13 at 10.01.34 AM.jpg

I made the CATRA blades for Dr Larrin's testing.

The edges were very nice and the testing made good data.

[Deadboxhero]

Hey Larrin,

A little off topic, (sorry Shawn), but I would like for you to share your thoughts on the effects of Tungsten on blade steels? What it does and how more might be better, plus the down sides?

We can begin another thread if that's what you, Shawn and the "forum family" want?

sal
=================================================================================

"Continual improvement is our evolutionary obligation to humankind".

@Larrin

Post in thread 'Non stainless steels, why 4% chromium?' https://www.bladeforums.com/threads/non ... t-22834782

[WilliamMunny]

This is interesting. But all we laymen know at this time is that there are talented guys playing with some kind of mystery metal. What we're eagerly waiting for is a clue or two, like the area on the catra/toughness chart where the mystery metal is testing, or what the intended goal is with this project.

Screenshot 2024-11-13 at 10.01.34 AM.jpg

I made the CATRA blades for Dr Larrin's testing.

The edges were very nice and the testing made good data.

Awesome peak inside the process. Thanks

[Cletus]

This thread has become one of the most interesting threads to date! Thanks!

[Gtscotty]

Stainless Z-Max, here we come!

[WilliamMunny]

Stainless Z-Max, here we come!

Exactly what I was thinks, a stainless K390. Always exciting when you can push steel like MagnaCut did.

[Bill1170]

The orange line is the approximate limit. You choose along the line how much toughness and edge retention you want. It’s been difficult historically to get stainless steels up to the orange line. Stainless steels are the blue dots.

Gonna need the IDs of some of those blue dots, doc

Sometimes it helps clarity to remove some of the details and look at the big picture. Interesting that Magnacut touches the orange line. Oh yeah, it's also stainless!

[Fireman]

I’m still waiting on diamond powder and boron nitride to be added to a flexible ceramic for a blade.

http://www.ioffe.ru/SVA/NSM/Semicond/BN ... 20diagrams

Can you get boron nitride powder with a roughly 3000 degree Celsius melting point to have added benefits to a powdered metal for steel blades? Perhaps clad it so it’s easier to sharpen?

https://precision-ceramics.com/materials/boron-nitride/

It’s used in ceramic applications already. How will it cut?

Who has the forging capability? I will supply the boron powder for the new Boron steel.

https://thermalprocessing.com/understan ... in-steels/

Can Larin add some boron powder to his Magnacut CPM?