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Thread starter White Warrior Start date May 2, White Warrior Tinder Gatherer. Joined Mar 17, Messages 8 Likes So this is my first original post, on any forum ever, and it's basically out of necessity. Besides of course Mike Stewart's good, but brief 2 minutes roughly explanation of it. I'm guessing it must be a pretty recent release because of this I would, however love to hear from any owners of this particular knife, or others by BRK in either CPM-m4 or cpm-cruwear.
In performance attributes only that is, not the process of production.Dr myers pediatric dentistry
I have asked questions on other forums, and gotten very mixed answers, which was to be expected. Personally, absolute stainlessness is not necessary for me, I do however value SOME corrosion resistance as I use my knives near at least fresh water very often.
I have been told that although these two alloys aren't stainless, they do provide some decent corrosion resistance properties.
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I have also been told by separate sources that the M4 would be lacking in toughness for the purpose s that a bravo 1 would serve. However, the hrc would be a bit lower on the bravo 1 than say a BM contego folder, which is a good "example" of what most people have to base this opinion on and also, the stock thickness on the bravo 1 would be. I guess what I'm asking is, which is more corrosion resistant? Which holds an edge better?Knife Informer is reader-supported. When you buy through links on our site, we may earn an affiliate commission.
I often find myself looking at new knives. Online shopping and social media pull on the heartstrings of blade lovers everywhere. There are so many brands, so many steel types, price points, and design styles, choosing a knife can be fun and exciting.
And this is where I think Spyderco shines. They offer just about any handle material, blade steel, blade shape, lock type, and size you could imagine. And, nested somewhere in the middle of their price points and sizes, is the Shaman. And the Shaman is absolutely made for the hand. The ergonomics of this knife are superb. And the looks are great on this one, too. The material used on this knife has the feel of an old pair of jeans. And the Shaman is no exception to that. Cru-wear is generally regarded as a very tough steel, relative to pocket knife and small fixed blade steels.
It is not technically a stainless steel, as it is a tool steel, nested comfortably between 3V and 4V in terms of toughness 3V and edge retention 4V. Cruwear is also relatively easier to sharpen when compared to 3V, and has just enough stainless properties to keep it from corroding easily. Which is a great thing, since you get some great toughness properties, good strength at the edge, and a sharpness to the edge similar to M4 or even K The blade has a nice, neutral drop point shape, with a high saber grind.
The blade stock. And speaking of the spine, there is some aggressive jimping found on the base of the spine near the top of the handle. It could be thinner, but it works well, and cuts without too much effort in most cases.This grade is readily machined in the annealed condition using parameters similar to D2 and exhibits minimal distortion in hardening.
The normal heat treatment is compatible to a wide variety of surface coatings such as nitriding, tin coating, etc. CRU-WEAR excels in applications that require higher wear resistance than D2, greater toughness than M2 high speed steel, or in applications that require both.
The combination of wear resistance, compressive strength, and exceptional toughness make CRU-WEAR a great choice for a wide variety of demanding tooling applications.
Typical Chemistry. Typical Applications. Blanking Dies. Thread Rolling Dies. Shear Blades. Forming Blades. Planer Blades. Wear Parts. Coining Dies.
Trim Dies. Laminating Dies. Straightening: Best done warm F C. Quench: Salt, air or positive pressure to below F 65C or to a temperature at which the tool may be held comfortably in the bare hands.
Surface protection techniques should be used to prevent unintentional decarburization, carburization, or oxidation scaling. The usual tempering temperature is F C but this may be varied to suit the hardness or toughness requirements. Tempering time should be 2 hours minimum or at least one hour per inch per 25mm of total thickness for sections over 2" 50mm thick.
Double tempering is mandatory. Triple tempering is recommended. When multiple tempering is employed, the workpiece should be cooled to room temperature between the tempering operations.
Note: Optimal performance indicated by boxed hardness. Physical Properties Modulus of Elasticity Return to top of page.As an Amazon Associate I earn from qualifying purchases. Learn more. The needs of customers are always in the minds of steel manufacturers.
Bark River Bravo 1 CPM-M4 vs CPM-Cruwear
In the steel industry, innovation is the key to stay competitive and be on top of the market. The air-quenching process will provide an increased toughness and wear resistance.
Common assembly tools are coining, laminating dies, blanking dies, and thread rolling dies. Repeated use will not affect if not, then, a small amount equipment and will function as intended. The high wear resistance and toughness of Cru-Wear is best used for:.
You can find out more about what makes a particular steel alloy tick by checking out its individual elements and specific percentages of each component.
Carbon: 1. The carbon determines much of its hardness, and you have a lot of carbon in this steel. Chromium: 7. The chromium also boosts the yield strength and hardenability of the steel. Molybdenum: 1. But you also get more molybdenum than usual here, which means you get more of the side benefits.
You get increased hardenability, greater temperature strength, enhanced creep strength, and also improved corrosion resistance. Tungsten: 1. That means you can use it with higher temperatures without reducing its hardness. Vanadium: 2. The vanadium has similar effects that you also get from carbon, molybdenum, and manganese. Silicon: 1. When dissolved in iron, silicon strengthens the resulting steel. That means it increases the hardness of the steel.
Sulfur: 0. Too much of it reduces the impact toughness of the steel. Each individual metal component in the Cru-Wear contributes to its hardness. The addition of the molybdenum acts as a retardant in secondary tempering.
There are 4 significant properties to any tool steel alloys. These are toughness, wear resistance, hardness, and heat resistance. Cru-Wear steel is industry-level tough. It should withstand high pressures without breaking. Cru-wear uses crucible powder metallurgy allowing for an even distribution in the toughness. The air hardening ensures carbide grain size decreases until the next heat treatment.
Watch this guy hammer the spine of a Cru-Wear knife. The resulting finer grain size allows Cru-Wear knives to be sharp. It also means it can resist dullness that can arise from repeated use.
Cru-Wear-based blades or drill bits can then cut or bore as easy as an M2 high-speed steel. Knife-makers or drill bit manufacturers will not have to worry about faulty parts. Returns due to defects will be less likely to happen.The products in the KnivesShipFree inventory represent dozens of different steels -- stainless steels and carbon steels, tool steels and "super" steels -- and we know that can be a bit overwhelming when all you're trying to do is choose a knife.
That's why we put together this handy quick-reference guide, arranged in alpha-numerical order. What it is: 13C26 is a Sandvik stainless steel commonly used in razors and kitchen knives. Who uses it: Buck Knives. What it is: 14C28N is a Sandvik stainless steel commonly used in razors and kitchen knives. Who uses it: Kershaw. What it is: 19C27 is a Sandvik stainless steel commonly used in heavy-use sporting knives.
Who uses it: Canal Street Cutlery. What it is: Crucible CM is a high-quality stainless steel, one of the most popular modern corrosion-resistant steels. Disadvantages: Can be relatively difficult to sharpen compared to carbon steels and softer stainless steels. Advantages: Easy to sharpen, extremely corrosion-resistant the most corrosion-resistant of the series stainless steels. Who uses it: Lon Humphrey Custom Knives. What it is: is a plain carbon steel, very common in folding and fixed-blade knives designed for everyday use.
What it is:often called "spring steel," is a carbon steel commonly used in large knives.Politici forza italia 2018
What it is: A2 is a carbon tool steel, known for its toughness and ease-of-maintenance. Wright Handmade Knives.Sampath bank kelaniya peliyagoda
What it is: CPM 3V is a "Crucible Particle Metallurgy" carbon tool steel, widely regarded as a "super steel" for its properties and performance. Disadvantages: Relatively more difficult to sharpen than predecessor steels like A2. What it is: CPM 4V is a "Crucible Particle Metallurgy" carbon tool steel, widely regarded as a "super steel" for its properties and performance. Who uses it: Bark River Knives. Advantages: Outstanding edge holding and corrosion resistance, requires little maintenance.
What it is: CPM is the "Crucible Particle Metallurgy" version of CM stainless steel, and is widely regarded as a "super steel" for its properties and performance.The steel was designed to to have good hot hardness, meaning high hardness is maintained even at high temperatures seen in forging operations. The goal of the steel was also to offer a good combination of hardness, wear resistance, toughness, grindability, and corrosion resistance .
If the value is below 1. The higher the value is, the less wheel wear is required for a given amount of grinding. They started with a based composition of 0. This improvement in grindability is likely due to an improved carbide structure from the vanadium addition. The Vasco Tuf had reduced vanadium, presumably to keep the carbide size smaller for better toughness. The Vasco Wear had a tungsten addition, presumably for higher hardness with high temperature tempering secondary hardeningand better hot hardness.
Vasco Wear saw use in knives shortly after its introduction. The earliest mention I found of it related to custom knives is , though it was probably used even earlier. Ted Dowell continued to use the steel regularly for decades .
It cuts and cuts and cuts! It looks dull and even feels dull, but it still cuts! D2 was used for applications that benefited from high wear resistance, and A2 was used where higher toughness was necessary. I wrote about the history of A2 here and D2 here. These steels had increased Mo relative to Vasco Die to improve hardness with high temperature tempering, and reduced vanadium to maintain a smaller carbide size for better toughness.
The reduced vanadium means that the wear resistance was also reduced, though that is an acceptable trade-off for certain applications. The patent does not specifically refer to Vasco Die or other similar steels but 8Cr Early versions of Vanadis 6 and Vanadis 10 are shown in the Vanadis 4 patent though they were slightly modified by the time they were released.
The History of 3V, Cru-Wear, and Z-Tuff Steel
These steels are essentially Vasco Die but with increased vanadium, and a corresponding increase in carbon. The patent for Vasco Die expired around The patent for Vasco Die only covered carbon contents as low as 0.Spyderco Forums Skip to content. Search Advanced search. Quick links. Forum rules. I read too that CW has about the edge retention of S30V, but a lot tougher.Perfect Knife For The Farmer? Spyderco Para 3 For The EDC
Thanks in advance. What kind of use will this knife be facing? Last edited by Sharp Guy on Sun Apr 01, am, edited 1 time in total. Of all the things I've lost I miss my mind the most!
It is regular production like the SV; when the "Blurple" PM2 was released I had a difficult time finding one in stock, now as you see they are readily available.
There is also the KnifeWorks Exclusive M4 PM2 that was just rereleased, it has carbon fiber scales and is a very sweet knife. There is a Sprint run widely available still, it also has carbon fiber scales, but uses a non powdered steel: Of the three steels you mention I only own Maxamet. So far, I've found it's edge retention to be amazing, while being pretty tough as well.
BUT I'm not really looking forward to reprofiling it. I reprofiled my CPM M4 Advocate recently, freehand on a cheap Smith stone set, and it took me several hours of painstaking work. I think for the Maxamet I'm going to buy an Edge Pro. For the average person SV had the best combination of properties, or maybe Cruwear.Bergamont e bike models 2021
SV assuming you have the proper tools for sharpening. Maxamet is somewhat specialized- good edge retention for cutting but poor corrosion resistance and hard to sharpen. Similar to cruwear. I really like it. Personally, all of these steels are really good.Channel breakout afl
If you need corrosion resistance, go with sv or even s30v. Not sure I would spend a whole lot more from one to the next.
But it looks like SV has M4 beat in every category. I like to try different steels and feel like since I already have the M4 on the GB, I would be wasting an opportunity does that make sense? My main budget is going towards a new iPad Pro when they come out later this year. Cruwear and Maxamet are both great in their own ways, but it sounds like the premium you pay may be a deal breaker?
If that's the case, would probably say the m is not going to be worth it for you either. I am a big fan of sv. That said - if you don't like the blurple - have you considered the plain 'ole s30v? Definitely not the most drool-worthy, but perhaps the most suited to your current needs? Personally, my answer would be sv pm2 with custom after-market scales. It's very, very good at edge retention, also very stainless. Best steel I tried for many years.
I'm using it every day for the last 18 months.
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