cpm s30v bg-42 cpm d2 military

Ben---I have a feeling we are going to see M-4. I think I'm starting to understand the way Sal operates.
 
gine said:
What are the other aspects of edge holding, hardness, wear resistance and what else?:confused::thumbup:
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Hardness, wear resistance, and toughness are the three components of edge holding (IMO).
Resistance to deformation, resistance to, well, wear, and resistance to breaking.
If the edge flattens, it's dull. If the edge wears off, it's dull. If the edge breaks off, same thing, you have a dull knife.
Rust resistance is also a factor in some environments.

Unfortunately "toughness" is as hard to define as "edge holding".
The best I can tell toughness is a combination of hardness, flexibility, and resistance to fracturing (breaking).

If the steel can actually hold its shape when you hit something hard, then great, but most of the time your thin piece of metal will move to accommodate the other hard object, and flex (ideal) bend (hopefully) or break (not good).
If the steel is harder, it will keep it's shape better, but will also be much more likely to break when pushed too far. If you make the steel soft and mushy then it will just bend over, taking less damage overall compared to chipping, but you loose your edge that much faster when actually cutting stuff.

While flexibility is important, it is also the most complicated aspect of toughness, and is affected by a wide variety of variables (alloy, hardness, heat treat, the weather, etc...)
(darn it, that was meant as a joke, but temperature plays a part too).
You can theoretically have steel that is hard, flexible, and bends rather than breaking. Finding steel like that is another thing. (http://www.bussecombat.com/:D)

Of course all these factors are affected by the type of steel chosen, so you have to pick your steel according to what you want it to do.

And keep in mind this is all just the observations of a hobbyist, none of it is written is stone.

Here's Joe Talmadge's take on the subject.
http://spyderco.com/forums/archive/index.php/t-15637.html
 
Joshua J. said:
Hardness, wear resistance, and toughness are the three components of edge holding (IMO).
Resistance to deformation, resistance to, well, wear, and resistance to breaking.
If the edge flattens, it's dull. If the edge wears off, it's dull. If the edge breaks off, same thing, you have a dull knife.
Rust resistance is also a factor in some environments.

Unfortunately "toughness" is as hard to define as "edge holding".
The best I can tell toughness is a combination of hardness, flexibility, and resistance to fracturing (breaking).

If the steel can actually hold its shape when you hit something hard, then great, but most of the time your thin piece of metal will move to accommodate the other hard object, and flex (ideal) bend (hopefully) or break (not good).
If the steel is harder, it will keep it's shape better, but will also be much more likely to break when pushed too far. If you make the steel soft and mushy then it will just bend over, taking less damage overall compared to chipping, but you loose your edge that much faster when actually cutting stuff.

While flexibility is important, it is also the most complicated aspect of toughness, and is affected by a wide variety of variables (alloy, hardness, heat treat, the weather, etc...)
(darn it, that was meant as a joke, but temperature plays a part too).
You can theoretically have steel that is hard, flexible, and bends rather than breaking. Finding steel like that is another thing. (http://www.bussecombat.com/:D)

Of course all these factors are affected by the type of steel chosen, so you have to pick your steel according to what you want it to do.

And keep in mind this is all just the observations of a hobbyist, none of it is written is stone.

Here's Joe Talmadge's take on the subject.
http://spyderco.com/forums/archive/index.php/t-15637.html
Click to expand...

Thanx J well said:D:thumbup:
 
I know it's already been said, but get 'em all. I have the Para-military in S30V and the Military now in BG42 and CPMD2 and they really are all different, and that's half the fun of it for me. Perfect steel? Who knows what the perfect steel is, but it sure is fun tryin' them all out.:D

Cheers,
Jon
DSC00854.jpg

DSC00855.jpg
 
Okay guys, you forced me to do it...

The Military Wheel.

attachment.php


Clockwise from top: 440V (a.k.a. S60V), CPM D2, S90V, BG-42, S30V and ATS-34.
 
Its too bad resizing it makes it so fuzzy. I'm not a very good photographer, but the resize makes me look even worse than I am.:o
 
yablanowitz said:
Okay guys, you forced me to do it...

The Military Wheel.

attachment.php


Clockwise from top: 440V (a.k.a. S60V), CPM D2, S90V, BG-42, S30V and ATS-34.
Click to expand...

Cool pics you guys right on!!!!!
What is your favorite steel of them??
it's hard to pin point which steel is better by the charts between cpm s30v and bg-42.
I heard bg-42 is more wear resistance and cpm s30v is tougher and bg-42 rockwells a little higher.yablanowitz what would your choice be for edc.:thumbup:
 
I just got my millie s90v yesterday:DI like
In about four weeks i'm going to get my second,but I want a g-10 handle on the next.I have a choice of s30v or d2.I like the green handle on the d2 but I'm more into the performance of the steel because It will be a user and edc.I don't care about corrosion it will be used dry anyways.What steel would be better for edge life.My guess would be cpm d2,( 6'7") what do you think??:D
Yab you have it all:D, what would you say as a dry user:jerkit::):thumbup:
 
You are asking the wrong guy there. ;)
I have been carrying all but the ATS-34 to compare them. And yes, I do mean at the same time. For my uses, which are only normal if you are in construction or something similar, the S90V is pulling ahead. To rank them in the order I generally go to them on the job, I would say:

1) S90V
2) CPM D2
3) 440V (S60V)
4) BG-42
5) S30V

If I was carrying the ATS-34 as well, it would probably slide in ahead of the BG-42. The D2 and 440V are virtually tied, with the D2 seeing a little more use mostly because I have used another 440V blade in the past so I already know what to expect from it.
 
yablanowitz said:
You are asking the wrong guy there. ;)
I have been carrying all but the ATS-34 to compare them. And yes, I do mean at the same time. For my uses, which are only normal if you are in construction or something similar, the S90V is pulling ahead. To rank them in the order I generally go to them on the job, I would say:

1) S90V
2) CPM D2
3) 440V (S60V)
4) BG-42
5) S30V

If I was carrying the ATS-34 as well, it would probably slide in ahead of the BG-42. The D2 and 440V are virtually tied, with the D2 seeing a little more use mostly because I have used another 440V blade in the past so I already know what to expect from it.
Click to expand...

s30v at the bottom wwwwowww!!!!! but I would agree as well:D
D2 is my next thx Yabby:D
 
I have actually edc'd the S30V for 3 months now and it still doesn't need resharpening; guess the tasks were pretty light

don't have enough for a circle, so i have tried other geometrical stuff
btw, nice pic, yablanowitz :thumbup:
5-1.jpg
 
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