I Tested the Edge Retention of 48 Steels

zorandjurkic said:
Give me 62 Hrc any steel and i will destroy it on bone, stone, other steel, wood. German meat cleaver cuts bone on 56Hrc better than knife on 56 Hrc. If you cut paper with knife or shave hair with knife that doesn't mean that is knife better than scissors or razor. This is real meaning " right tool for job", not different knife or steel.
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Well I guess my real world experience of butchering a decent amount of animals with different steels and hardness is completely irrelevant as you are telling my results are false.

Have fun in your bubble.
 
Seedy Lot said:
Well I guess my real world experience of butchering a decent amount of animals with different steels and hardness is completely irrelevant as you are telling my results are false.

Have fun in your bubble.
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Oeps….I thought/ hoped this conversation had stopped …Please🙏
 
Seedy Lot said:
Well I guess my real world experience of butchering a decent amount of animals with different steels and hardness is completely irrelevant as you are telling my results are false.

Have fun in your bubble.
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You said that. I am not even thinking something like this.
 
Can we get this thread back on track? It is about edge retention of steels, not toughness. Z zorandjurkic Will you please make a new thread about the subject you wish to discuss?
 
I made a custom CATRA blade in Dr Larrin's new high edge retention steel called MagnaMax,

I traveled to Golden, Colorado to test it in the Spyderco laboratory.

Screenshot_20251103-124135.png

The amount of cards cut on the first stroke was very impressive.

Overall, if comparing to other steels and the geometry and hardness are normalized for an apples to apples comparison then It is definitely in the K390/10V range 🤙
 
DeadboxHero said:
I made a custom CATRA blade in Dr Larrin's new high edge retention steel called MagnaMax,

I traveled to Golden, Colorado to test it in the Spyderco laboratory.

View attachment 3015894

The amount of cards cut on the first stroke was very impressive.

Overall, if comparing to other steels and the geometry and hardness are normalized for an apples to apples comparison then It is definitely in the K390/10V range 🤙
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That’s nice to hear about edge retention of that blade in the new steel. Stainless K390 like……🥰
How about the chipping/rolling ( edge stability/ toughness) in comparison when hardened to the hrc the steel was tested at? And at what hardness was it tested?
 
kasumi said:
That’s nice to hear about edge retention of that blade in the new steel. Stainless K390 like……🥰
How about the chipping/rolling ( edge stability/ toughness) in comparison when hardened to the hrc the steel was tested at? And at what hardness was it tested?
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The edge stability will be highly enjoyable but results generally speaking will vary like it always does with any steel due different processing, HT, sharpening etc.


This CATRA blade was at 66.5rc so it was attempting to test the limits of the material.


The future looks bright.
 
DeadboxHero said:
The edge stability will be highly enjoyable but results generally speaking will vary like it always does with any steel due different processing, HT, sharpening etc.


This CATRA blade was at 66.5rc so it was attempting to test the limits of the material.


The future looks bright.
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Thanks . Yes things look promising although I am very much enjoying “your” 15V in its full glory with EDC use. Never had such an enjoyable steel on a blade. Sharpens relatively easy on a diamond stone , strops back fantastic on a leather strop with diamond paste and has and keeps that “ sticky” edge that I Iike so much for a long time. For me the idea of not having to sharpen because I have to but because I like to is a new dimension that I have never experienced before with S90V , 110V, 20CV, 30V, 35V and some other bladsteel. Corrosion has not been an issue thus far and whilst don’t shy away from cutting a steak , orange, apple and other moisty stuff. As long as I wipe the blade off more or less immediately after use there does not seem to be any corrosion issues with the 15V in my use. I coat the blade with Ballistol so now and then. ( standard maintenance about once a week a thin coating . Also after having washed the blade) . Of course it is nice to have MagnaMax in the pipeline but as far as I am concerned I don’t see myself make the switch from 15V for my sort of use. (EDC) Time will tell …..😉. My hunting/fishing knives are fixed blades and there it could be a fine option though as these are left “in the dirt” for longer periods of time once in a while . In the end it is the right steel with the right heat treat process and the right geometry and built that makes a cutting tool good for a specific application. For me the Native 5 in 15V is THE best EDC knife ever ( I have to admit that I installed a nice pair of Brown Burlap scales to really fall in love) and I thank you and Spyderco for that.
https://imgur.com/a/ObNV3W9
https://imgur.com/a/E8AuudF
 
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DeadboxHero said:
The edge stability will be highly enjoyable but results generally speaking will vary like it always does with any steel due different processing, HT, sharpening etc.


This CATRA blade was at 66.5rc so it was attempting to test the limits of the material.


The future looks bright.
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What is edge angle?
 
zorandjurkic said:
What is edge angle?
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Why do you want to know….without all other parameters like , heat treat , Cyro process, thickness behind the edge etc….. edge angle does not tell a lot.

Shawn said:
“Overall, geometry and hardness are normalized for an apples to apples comparison” This is most usefull info I think as far as (CATRA) edge retention info is concerned and promising especially if he says the results do show K390 area…”

( but now much more stainless)


I thought as long as the hrc is 58 you were happy……now you start to show interest in edge angles as well?
 
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zorandjurkic said:
What is edge angle?
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Usually the edges are tested at 15° degrees per side, I was curious about the limits so I went closer to 11° degrees per side. This allows us to see how this steel, edge and HT holds up under the fixed load (50N) on a silica ingrained card stack for 60 slicing cycles.

I was impressed by the results. No blow outs and the steel was able to hold an extreme edge geometry generating impressive initial cutting performance.

In my experience, this translates to extreme cutting performance in real world use.
 
kasumi said:
Thanks . Yes things look promising although I am very much enjoying “your” 15V in its full glory with EDC use. Never had such an enjoyable steel on a blade. Sharpens relatively easy on a diamond stone , strops back fantastic on a leather strop with diamond paste and has and keeps that “ sticky” edge that I Iike so much for a long time. For me the idea of not having to sharpen because I have to but because I like to is a new dimension that I have never experienced before with S90V , 110V, 20CV, 30V, 35V and some other bladsteel. Corrosion has not been an issue thus far and whilst don’t shy away from cutting a steak , orange, apple and other moisty stuff. As long as I wipe the blade off more or less immediately after use there does not seem to be any corrosion issues with the 15V in my use. I coat the blade with Ballistol so now and then. ( standard maintenance about once a week a thin coating . Also after having washed the blade) . Of course it is nice to have MagnaMax in the pipeline but as far as I am concerned I don’t see myself make the switch from 15V for my sort of use. (EDC) Time will tell …..😉. My hunting/fishing knives are fixed blades and there it could be a fine option though as these are left “in the dirt” for longer periods of time once in a while . In the end it is the right steel with the right heat treat process and the right geometry and built that makes a cutting tool good for a specific application. For me the Native 5 in 15V is THE best EDC knife ever ( I have to admit that I installed a nice pair of Brown Burlap scales to really fall in love) and I thank you and Spyderco for that.
https://imgur.com/a/ObNV3W9
https://imgur.com/a/E8AuudF
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That Native 5 in 15V looks fantastic, thank you for sharing.

Yes, that was quite a special project.

I'm very happy to hear about the performance you're experiencing; that's what it's all about.

That's exactly how I wanted it to come out and it was certainly no easy feat to achieve.

While there were times it seemed like I was being unfairly obstinate during the collaboration it turned out to be fruitful because you guys DO notice those details.

I appreciate the feedback, thank you.

Yes, MagnaMax will be very exciting, and 15V will always be an extreme material.
 
DeadboxHero said:
Usually the edges are tested at 15° degrees per side, I was curious about the limits so I went closer to 11° degrees per side. This allows us to see how this steel, edge and HT holds up under the fixed load (50N) on a silica ingrained card stack for 60 slicing cycles.

I was impressed by the results. No blow outs and the steel was able to hold an extreme edge geometry generating impressive initial cutting performance.

In my experience, this translates to extreme cutting performance in real world use.
Click to expand...
Good luck! I'm sure that this is fine steel.
 
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