Spyderco CPM Magnacut Hardness

Mister_Punchy said:
If i'm correct, Hinderer go 60~61, Lionsteel 60.5~62.5, and now Spyderco goes around 62 according to Slice O Life ? Do you have any clue on the reason why the magnacut doesn't reach the HRC recommended by Dr. Larrin Thomas ?
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What is the Dr. Larrin Thomas recommended HRC?
 
Mister_Punchy said:
If i'm correct, Hinderer go 60~61, Lionsteel 60.5~62.5, and now Spyderco goes around 62 according to Slice O Life ? Do you have any clue on the reason why the magnacut doesn't reach the HRC recommended by Dr. Larrin Thomas ?
Click to expand...
Larrin was misquoted...He said so himself. Magnacut has a range. IIRC, anything between 60-65 is adequate.

Someone came along and interpreted that 62-63 was 'perfect'.

If I'm wrong about this, he'll correct it.
 
Delgadonine said:
Larrin was misquoted...He said so himself. Magnacut has a range. IIRC, anything between 60-65 is adequate.

Someone came along and interpreted that 62-63 was 'perfect'.

If I'm wrong about this, he'll correct it.
Click to expand...
knifesteelnerds.com

CPM MagnaCut - The Next Breakthrough in Knife Steel - Knife Steel Nerds

CPM MagnaCut is a new stainless knife steel designed to be better than anything that has been available before. Is it a success?
knifesteelnerds.com knifesteelnerds.com

He might not answer since this question has probably come up tens of thousands of times in his life already. From this article, and the Q&A in the comments, it seems that 62-64 HRC is what he believes to be optimal with his current knowledge of the steel, and the HRC between 62 and 64 would depend on the application. Kitchen knives/folders = 64, fixed blades = 62. Time and knowledge may evolve and this may change.
 
From the article linked above:
“The 2050-350 heat treatment results in around 61-62.5 Rc and offers balanced properties including good edge retention, toughness, and corrosion resistance. Higher hardness can be achieved with increased austenitizing temperature and/or decreased tempering temperature. Higher hardness can be used when maximum strength is desired for improved stability and edge retention in fine cutting knives. For example, many Japanese kitchen knives are in the range of 62-64 Rc and MagnaCut would be very well suited to that hardness range for those types of knives.”

So I characterized 62+ Rc as an optional heat treatment depending on the application.
 
Thank You, Larrin!

Each company offers a different style-even if hardly discernable by science. Styles attract different kinds of fans and users.

I believe MagnaCut reflects an adaptability because of its range.

Thus, said kitchen knife could be deployed effectively outside its intended use.
 
Spyderco keeps their hardness ratings close-to-chest as to keep everyone out of their heads. Too many armchair quarterbacks that "know more" about a better hardness, than who actually use their knives to care about what the actual hardness really may be. They wish for the performance to be the biggest factor of any given steel and not its HRC number. Many numbers can mean many things, but the most important is how the steel got to that particular number, versus the number itself.

How is the Magnacut performing from Spyderco, for those who do have an example? Do you have another example of Magnacut to compare, and if so, how are they alike/dissimilar?
 
Fair questions!

The Tactile with MagnaCut I had was adequate. I wasn't able to get the edge on it I wanted. A friend of mine liked the knife, so I gifted it to her.

To me, it didn't compete with Microtech's production edge of M390. She was able to put a hair shaving edge on it.

Tactile said it was 61ish.

I think it's about skill sharpening an edge?
 
Mister_Punchy said:
If i'm correct, Hinderer go 60~61, Lionsteel 60.5~62.5, and now Spyderco goes around 62 according to Slice O Life ? Do you have any clue on the reason why the magnacut doesn't reach the HRC recommended by Dr. Larrin Thomas ?
Click to expand...
The major benefit to lowering the HRC is an increase the toughness
 
Delgadonine said:
Fair questions!

The Tactile with MagnaCut I had was adequate. I wasn't able to get the edge on it I wanted. A friend of mine liked the knife, so I gifted it to her.

To me, it didn't compete with Microtech's production edge of M390. She was able to put a hair shaving edge on it.

Tactile said it was 61ish.

I think it's about skill sharpening an edge?
Click to expand...
Nope, it's about people rushing to get the hot new super steel in the marketplace before they do their homework on the heat treat protocol.

There's always going to be a new super steel coming around the hill so you don't need to get the current best one as soon as you can. Give it 6-12 months and see how it shakes out.
 
weeping minora said:
Spyderco keeps their hardness ratings close-to-chest as to keep everyone out of their heads. Too many armchair quarterbacks that "know more" about a better hardness, than who actually use their knives to care about what the actual hardness really may be. They wish for the performance to be the biggest factor of any given steel and not its HRC number. Many numbers can mean many things, but the most important is how the steel got to that particular number, versus the number itself.

How is the Magnacut performing from Spyderco, for those who do have an example? Do you have another example of Magnacut to compare, and if so, how are they alike/dissimilar?
Click to expand...
weird as the Buck factory told what they were doing it in the Buck forum, here. they all do info release their own way though.......
 
Larrin said:
From the article linked above:
“The 2050-350 heat treatment results in around 61-62.5 Rc and offers balanced properties including good edge retention, toughness, and corrosion resistance. Higher hardness can be achieved with increased austenitizing temperature and/or decreased tempering temperature. Higher hardness can be used when maximum strength is desired for improved stability and edge retention in fine cutting knives. For example, many Japanese kitchen knives are in the range of 62-64 Rc and MagnaCut would be very well suited to that hardness range for those types of knives.”

So I characterized 62+ Rc as an optional heat treatment depending on the application.
Click to expand...
Thanks for chiming in, Dr. Thomas. I really appreciate your information. This Native 5 is my first experience with Magnacut. So far it's amazing. This is hard for me to explain, but something about this Magnacut steel and the way it interacts with sunlight is awesome. With Spyderco's satin finish, this thing just glimmers every time the sun hits it. It's brilliant. Well done, sir.
 
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