Thoughts On The Blade Steels Used In The Sebenza Over The Years..............

nyefmaker

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* I have been one of the lucky ones to be able to have the all mighty sebenza in all 4 steels available + the two main styles of Damascus

* Figured with all the recent posts asking is this steel better than that, is this knife better than that, that I would start a little thread with my CRK blade steel experience. With any of these threads, it mainly comes down to how they cut, not how good they look in hand.

* I am a user of my CRK. Though I do have some that I have never carried, its not their fault. Cant carry tons of them at once (the zombie apocalypse is not here yet). But I do use mine, very few are safe queens. So below is my Real World experience with them.

* I also do not own a microscope, so if there are "micro" chips in the edge, I am not seeing them. They cut and have cut fine for me for years ( both my hands and materials ), and to ME, thats what counts.

* As for the performance of the knives and steels, I do what CRK recommends.
> I use the CRK lube, its the cheapest of all and it was designed just for their knives. I don't need to reinvent the wheel here.
> Also, I only use the Spyderco Sharpmaker. At $60, I find it to be about the best sharpener out there, both for the experienced and novice. I have used the old vintage "V" sharpening systems for over 25 years and have had the upmost success with them. I don't need fancy bench clamping gizmos with stones and guides that looks like an erector set to sharpen my sebenza. I know there are masters at using a stone like HAZE. He obviously has a talent I do not have.

* When I sharpen my knives, I test them by shaving some hair on my arm, or on my thumbnail to see if it catches. This is SHARP enough for me. I have yet to see any knife that will cut free standing hair, cut material falling across the blade, etc. One slice into some cardboard and that edge is gone, plus one slip and your in for a world of hurt......Ouch...!!!

* I have Never questioned CRK's RC Heat Treat. I am a User of the knives, not a metallurgical scientist. My grandfather worked with steel all his life and even had a RC tester. He always told me anything over 40 was Hard. I find it hard to believe a knife with a 60RC is far superior to a knife with 58-59 RC. Mr. Reeve helped develop the S30V & S35VN. I am sure he knows just a little bit more than any of us or even the other makers that use the steels he helped create. To each their own.


ATS-34: I have had 4-5 P sebenzas with this steel. I have sharpened them and they held a good edge, but they were not knives I carried for edc, so their long term usage, I am not experienced in. I did have a couple with stained blades, but since I was not the original owner, I do not know what they were subjected to. I currently have 2 with ATS34, but again, they are not edc's. Though I have carried them a few times, I do not put them in the my edc class.

BG-42: The first sebenza I ever had, a large regular ended up having this as the blade steel. Once I found how sought after it was even back then, I looked for a newer S30V to replace it. I did carry it often and have experience with BG-42 in other sebenzas. I find it keeps a great edge, but is hard to sharpen. I only use the sharpmaker and have 25+ years experience with this style of sharpening system, so I know what I am doing with it. Never had an issue with stains of any kind and find it to be a huge step up from the ATS-34. If you get that right blade, I think it will hold the sharpest edge of them all.

S30V: I have the most experience with this blade steel. My mnandi's had it and most of my sebenzas do as well. Also the military line-up sported S30V in the beginning. I find it pretty easy to sharpen and it holds an edge as good as BG-42 in my opinion. Since its easier to sharpen ( to me at least ), its has always been my favorite. I have never had any of the chipping that people claim, though I think they are looking through a microscope to see it. I have used these S30V CRK for everything you can think of. Food Prep, Cleaning Game, Cutting TONS of cardboard, whittling, cutting tar paper and shingles, you name it and I have never had a problem with it. It remains my favorite until something changes my mind about it, but I dont see that happening for some time.

S35VN: I have had several sebenzas in this blade steel, but they have not been used nearly as much as the S30V. I do find it harder to sharpen like BG-42, and as for sharpness, it seems to just depend on the knife. I have S35VN that is RAZOR sharp, and I have had them that even though they are sharp, just dont go that extra little bit. ALOT of this has to do with blade angle. So I attribute it to that, and not so much the steel. Never a staining issue of any kind.

DT SS Damascus: I have had this steel in a mnandi and a couple sebenzas and find it to be similar to S30V. I find it easy to sharpen like S30V and holds an edge about the same. If I had to compare it to the other CRK steels, I would say its a cross between ATS-34 and S30V, only in a prettier package. I will say, I will not be out cutting shingles with it, not even from the backside....lol. But I have used it for food prep, whittling, cutting cardboard, whittling paint off rawhide dog bones that I cut in half with a sawzall, and the finish has never even slightly tarnished or faded. With the Stainless Steel damascus, I have never had any staining issues.

HC Damascus: I recently picked up 2 large regulars with some pretty fancy damascus blades. I know its HC damascus as they were made in the early 2000's and SS damascus was not seen then. They are sporting the factory sharp razor edge from 12-13 years ago. Since they will not be regular edc knives, I will probably not have much to say other than they sliced through that birthday or christmas wrapping paper like a laser....lol.

Looking forward to hearing your comments on usage...!!! Anything to add that will help CRK vets or newbies alike is its purpose...!!!
 
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Thanks for your insight and impressions! Your experience is valuable without question.

My only CRK experience was *gently* sharpening a large 21 along the factory lines. I found it to be amazingly easy to work with. I'm not sure if that is a result of their heat treat, but was very nice and reminded me of carbon steel.

As you already know, I'm looking forward to trying their s30v. I have previous experience with Spyderco s30v that I sharpened to 34° inclusive and I did have visible chipping, but they run their steel a bit harder.

I would love to try all of the steels eventually. Maybe one day I can add my own valuable information to your thread.

One can dream. ;)
 
Thanks for your insight and impressions! Your experience is valuable without question.

My only CRK experience was *gently* sharpening a large 21 along the factory lines. I found it to be amazingly easy to work with. I'm not sure if that is a result of their heat treat, but was very nice and reminded me of carbon steel.

As you already know, I'm looking forward to trying their s30v. I have previous experience with Spyderco s30v that I sharpened to 34° inclusive and I did have visible chipping, but they run their steel a bit harder.

I would love to try all of the steels eventually. Maybe one day I can add my own valuable information to your thread.

One can dream. ;)

Thanks for your comments. I have had spyderco's, but none is S30V. A higher RC would be more prone to chipping I would expect. I have never seen it though honestly.
I like S30V the best, but its the one I have had the most experience with. Perhaps that will change with more use of S35VN. Only time will tell. I sharpen all my CRK with the 40 degree setting ( 20 degrees per side ). Thats about as close to factory as you can get. I always use the sharpie trick too to see where the edge is at and if I am at the right angle or if I have to focus on one spot more than the other.

Hang in there, eventually with persistence you will get to try all the steels. Will mean a empty wallet, a diet of ramon noodles and a night or two on the couch perhaps, but its worth it....LOL.
 
Interesting. I think that my S35VN knives are easier to sharpen than the S30V ones. I also think they hold their edge as well, if not a little better.
 
Interesting. I think that my S35VN knives are easier to sharpen than the S30V ones. I also think they hold their edge as well, if not a little better.

With me, S35VN has been hit or miss. Wether it be blade angle or the steel itself. Since its the norm now, I will gain more experience with it and perhaps in the future can shed more light on it. I have owned just a few shy of 90 CRK, so all my experience is from Me alone, not from what I have read from others, like I stated at the top.
 
With me, S35VN has been hit or miss. Wether it be blade angle or the steel itself. Since its the norm now, I will gain more experience with it and perhaps in the future can shed more light on it. I have owned just a few shy of 90 CRK, so all my experience is from Me alone, not from what I have read from others, like I stated at the top.

That is just my experience as well, between my knives and maintaining my brother's knives.

I am a bit of an oddball, in that I rather like s35vn.
 
Thanks for your insight. I have used both CRK's S30V and S35VN and they perform well for all of my cutting tasks--no complaints here.
 
I am fortunate to own and use a small sebenza with each of the 4 regular steels. To be completely honest, they all fare about equally in the edc use department. There is not one that stands really above the rest in my (somewhat limited) use. However...... Bg42 is the most difficult to sharpen by a pretty wide margin. All four hold an edge just fine, with probably the bg42 being the best by a limited amount.
 
Why dont they use something like M390 or CTS-204P?

Part of it probably has to do with CRKs involvement in making s35vn in conjunction with Crucible.

If you watch the "Get to know your maker" video on YouTube you'll see that Mr. Reeves is, understandably, proud of the product.
 
Part of it probably has to do with CRKs involvement in making s35vn in conjunction with Crucible.

If you watch the "Get to know your maker" video on YouTube you'll see that Mr. Reeves is, understandably, proud of the product.

I might be wrong but my understanding is that the s35vn is only a marginal improvement over s30v. I dont know for sure as I am not a heavy user but just what I have read. :)
 
I don't know about you guys but my small sebenza s35vn losses it's edge pretty quick.That is just from my experience.
 
Thanks for sharing your experience nyefmaker. I appreciate you taking the time.

For me I have just one CRK, a large Insingo with S35VN. Mine came for CRK very sharp and after 1+ month of moderate use it shows no signs on needing touched up on my Sharpmaker. Thus so far I am really happy with S35VN. I have a Spyderco and a couple BMs with S30V and have had great results reprofiling on my WE and great results keeping sharp with the Sharpmaker. Hoping I get the same results with S35VN when it comes time to sharpen.

I also agree with your definition of SHARP....if a blade cuts hair, does not not catch and holds an edge then whoever sharpened the blade be it me or the factory has done a good job.

Once agin, thanks for taking the time to share your experience.
 
Thanks for sharing your experience nyefmaker. I appreciate you taking the time.

For me I have just one CRK, a large Insingo with S35VN. Mine came for CRK very sharp and after 1+ month of moderate use it shows no signs on needing touched up on my Sharpmaker. Thus so far I am really happy with S35VN. I have a Spyderco and a couple BMs with S30V and have had great results reprofiling on my WE and great results keeping sharp with the Sharpmaker. Hoping I get the same results with S35VN when it comes time to sharpen.

I also agree with your definition of SHARP....if a blade cuts hair, does not not catch and holds an edge then whoever sharpened the blade be it me or the factory has done a good job.

Once agin, thanks for taking the time to share your experience.

Thanks for the comments, your more than welcome. I am sure not everyone will agree with me and thats quite alright. Was just sharing my thoughts and experiences with the different steels since I have pretty much tried them all. Plus, I have used mine, as they are not safe queens.
 
I might be wrong but my understanding is that the s35vn is only a marginal improvement over s30v. I dont know for sure as I am not a heavy user but just what I have read. :)

A lot of people have said that. My understanding is that s35vn, in part, was designed to easier to machine. A true cutlery steel from the ground up, which I'm not sure s30v was. One of the criteria for CRK steel is that it must be easily sharpened too, which in my experience is very true of their s35vn. I'll have an example of their s30v to play with very soon so I'll post my thoughts on that after I've had some usage. There are a great deal of people here that know far more than me about steel, but I have been using it on a hobby level for a while. Hopefully I'll have something to add that's worth reading at some point like so many others have offered like the OP of this thread. ;)
 
Why dont they use something like M390 or CTS-204P?

I cant speak for CRK, but IMO it has to do with the over all design of the knife. M390 etc are high wear resistant steels and do not fit within the overall design of the knife. Depending on the maker there are some characteristics that are sought after:

- Sharpness

The ability of the steel to support a keen edge with razor sharpness. It also means that the knife will be easy to resharpen. This is important for all knives.

- Edge stability

The ability for the knife edge to withstand edge rolling and edge micro-chipping. Rolled edges and micro-chipped edges are the most common reasons for resharpening. This is important for all knives.

- Wear resistance

The ability for the edge to resist abrasive wear. This is usually secondary to edge stability issues, such as micro-chipping or edge rolling.

- Toughness

Toughness is the resistance of the knife to cracking. Cracks always start at a weak point in the steel, such as an inclusion or a large primary carbide. So toughness is enhanced by a homogeneous structure that is free from impurities and large carbides. A fine-carbide steel grade will always have higher toughness than a coarse-carbide grade with a given hardness. Toughness is vital for professional and military knives.

- Corrosion resistance

Corrosion resistance should be selected to suit the application. Since high corrosion resistance involves sacrifices in edge performance, the best approach is to have corrosion resistance that is 'good enough' for the selected type of knife. An everyday carry knife and a fishing knife will make very different demands on corrosion resistance.

(Source: http://www.smt.sandvik.com/en/products/strip-steel/strip-products/knife-steel/knife-steel-knowledge/)

and one I feel should also be mentioned is:

- Manufacturability

The ease with which steel can be machined, blanked, ground, and heat-treated (made into a blade)
(Source: http://www.knifecenter.com/info/knife-blade-materials)

CRK feel that S35VN offers them the characteristics that they want within the design.

Part of it probably has to do with CRKs involvement in making s35vn in conjunction with Crucible.

If you watch the "Get to know your maker" video on YouTube you'll see that Mr. Reeves is, understandably, proud of the product.

Here is the video for those interested: Part 1 of 2 and at 4 Minutes Chris starts talking about steel.

[video=youtube;4QiEnhA3n0A]http://www.youtube.com/watch?v=4QiEnhA3n0A[/video]
 
Marthinus,

I do understand what you are saying but it would be nice to see some other steel options like cts-xhp or the ones I mentioned earlier as either an option or production knife. Based on the prices of the CRK's, it would be nice to see other options is all I am saying!

Thx. for the reply.
:D
 
My dream is to have a CRK with M390 or CTS-204P or similar. My 25 is a slicer, I think it should have a steel that would hold an edge as long as possible along with a high level of corrosion resistance. It is a dream, for now I will "suffer" with s35vn :p
 
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