SILVER COOK knife handmade by master Fomenko Knifes, buy to order in Ukraine, steel - CPM® M398™ 62-63 HRC

SPECIFICATIONS:

The name of the knife: SILVER COOK knife handmade by master Fomenko Knifes, buy to order in Ukraine, steel - CPM® M398™ 62-63 HRC
Knife type: Fixed blade
Brand: Studio of exclusive handmade knives ANDROSHCHUK KNIVES 

Steel brand: Blade - M398 steel BOHLER M398 MICROCLEAN powder steel is a new martensitic steel from the Swedish-Austrian concern Bohler-Uddeholm. Blacksmith, locksmith, maintenance from Rostyslav Dozlo
Steel sheet: One-piece, through-mounting on screed and resin
Blade sharpening angle: Sharpened at 32-33 degrees
Descents: Direct
Reduction: 0.1-0.2 mm
Blade hardness: 62-63 HRC
Overall length: 318mm
Blade length: 190 mm
Blade width: 40mm
Blade thickness: 3.0 mm
Handle length: 128 mm
Handle thickness: 24mm
Grinding of the blade: Finish - longitudinal hand satin
Bolster and back material: Stainless steel
Handle material: Carbon (silver twill). Fasteners - AISI 304 stainless steel, corbi ties.
Handle color: Silver
Handle Impregnation: None
Covering the handle: Grinding
Hole for a shoelace (for a lanyard): Absent
Temlyak - Absent.
Sheaths: Absent

Model: SILVER COOK knife handmade by master Fomenko Knifes, buy to order in Ukraine, steel - CPM® M398™ 62-63 HRC
Model number: 064
Country of birth: Ukraine
Craftsman: Master Oleksandr Fomenko (Fomenko Knifes), Chuhuyiv, Ukraine Studio of exclusive handmade knives FOMENKO KNIFES
Best use: Multi-purpose: hunting, fishing, cutting, slicing, etc
Knife condition: new
The price is indicated with the sheath.

A sharpened knife is not a cold weapon.

Our knives are very sharp, so open and use very carefully. We are not responsible for injuries related to the use of our knives.
Our products are intended for legal use only by responsible buyers. We will not sell our products to anyone under the age of 18.

Availability changes regularly, upon confirmation of your order, we will inform you about the availability or when the product will be ready. The product may differ slightly from the one shown in the photo.

Powder steel M398
BOHLER M398 MICROCLEAN powder steel is a new martensitic steel from the Swedish-Austrian concern Bohler-Uddeholm, which was developed and launched in 2019. The increased content of Chromium provides it with good corrosion resistance, and the increased content of Vanadium provides the steel with extremely high wear resistance. The Carbon content has increased by 30% compared to its predecessor M390 steel and added to its hardness, which is 63-64 units on the Rockwell scale. To date, M398 steel is considered one of the best powdered stainless steels, which speaks for itself not only in its characteristics, but also in its price, which is quite high. Accordingly, be prepared for the fact that the cost of the finished knife cannot be low.

Powder steel M398 is produced in accordance with European standards and has the following chemical composition and microstructure (we will consider in comparison with the predecessor steel grade M390):

• Carbon (C, Carbon): is one of the main parts of the steelmaking process, improves edge retention and increases toughness; increases hardness and wear resistance.
• Silicon (Si, Silicon) and Manganese (Mn, Manganese): used as standard deoxidizers and degasifiers to remove oxygen during metal melting, increase strength.
• Chromium (Cr, Chromium): increases corrosion resistance (at >11% it makes the alloy stainless), enhances hardness and density.
• Molybdenum (Mo, Molybdenum): increases hardness, strength, hardenability and density; improves machinability and corrosion resistance.
• Vanadium (V, Vanadium): increases strength, wear resistance, increases density and viscosity; increases corrosion resistance by increasing the oxide film; vanadium carbide inclusions are very hard. The presence of this metal in steel indicates its quality.
• Tungsten (W, Tungsten): is the most refractory metal of all, used to add strength and toughness, improve hardenability; retains hardness at high temperatures.

Due to the higher amount of primary carbides in M398 steel (about 30 vol.%), the hardness, wear resistance and compressive strength in M398 increase significantly.

Also, steel M 398 is characterized by the following properties:

• - high level of corrosion resistance;
• - high strength;
• - extremely high wear resistance;
• - high stability during heat treatment;
• - good grindability;
• - good polishability;
• - high hardenability and compressive strength.

Thus, the knives made of M398 powder steel, the exclusive knife.net.ua manual robotic knives, are highly durable and can withstand fairly large loads and at the same time maintain their sharpness perfectly. They have excellent anti-corrosion properties and do not react with most alkalis and acids, that is, these knives do not require special care, which makes them a huge plus when used in nature, hunting, fishing and / or in extreme conditions *. Perhaps the only disadvantage of knives made of M398 steel is their cost, which is quite high and one must be prepared for this.

It is worth remembering that if you use the knife for its intended purpose and handle it with care, the knife will serve you for a very, very long time.

Well, you can buy a knife made of powder steel M398 on our website knife.net.ua or by contacting us by phone +380961711010

Knife steel Powder steel M398

Well, you can buy a knife made of Knife steel CPM-S90V. Composition and properties. on our website knife.net.ua or by contacting us by phone +380961711010

It is worth remembering that when using a knife for its intended purpose and with careful handling, the knife will serve you for a very, very long time.

CARBON - KNIFE HANDLES FROM THIS PREMIUM MATERIAL

One of the most prestigious and expensive materials for knife handles, in addition to titanium and expensive woods, is a type of carbon fiber, the so-called "carbon". The material is valued for its exceptional lightness, strength and aesthetic beauty.

Carbon (from the English carbon - carbon) is a polymer material with a composite composition, made from interlaced carbon fiber filaments (carbon fibers). These threads are made using epoxy resins. Average material density from 1450 kg/m³ to 2000 kg/m³. The main difference between carbon fiber and other polymers used in the manufacture of knives is its very low weight. It is the weight combined with exceptional strength that gives carbon an advantage over other handle materials: G10 polymer, Micarta, FRN plastic, etc. At the same time, carbon fiber surpasses structural steels in terms of specific strength characteristics. The main qualities of carbon are: high tensile strength, resistance to high temperatures, aggressive environments, slight expansion when heated, high electrical conductivity. Another important feature of carbon fiber is its natural black color obtained during production, which gives it a noble and elite appearance.

The basis of the material is carbon fiber threads, with an average thickness of 0.005-0.010 mm in diameter. Carbon fibers are made through a complex heat treatment process. The main fiber (polyacryl, viscose) is initially oxidized in air at 250°C for 24 hours. As a result of oxidation, ladder structures are formed (polymers whose macromolecules are crosslinked in pairs by regular chemical bonds). Then carbonization takes place (the process of enriching the filaments with carbon), which takes place when the fiber is heated in nitrogen or argon at temperatures from 800 to 1500 °C. As a result of carbonization, graphite-like structures (allotropic modifications of carbon) are formed. The heat treatment process ends with graphitization (the formation of graphite in materials in which carbon is contained in a dissolved state or in the form of carbides), it takes place at a temperature of 1600-3000 ° C, in an inert environment. As a result of graphitization, the amount of carbon in the fiber is brought to 99%. In addition to conventional organic fibers, special fibers from phenolic resins, lignin, coal and petroleum pitches can be used to produce carbon filaments.

Carbon fabrics, in turn, are obtained by weaving threads or ribbons. In the production of these threads, carbon roving is taken as the basis - a bundle of thin continuous carbon fiber filaments with a thickness of 3 microns, formed by carbon atoms. After interlacing, they form a carbon fiber frame. The amount of carbon fiber in a thread is estimated by the number "K" - the number of thousands of elementary carbon fibers. The thinnest and most expensive carbon fiber is 1K, the most common carbon fiber is 3K, there are also carbon fiber threads with K \u003d 6, 12, 24, 48. Fabric made from threads can have a variety of weaving patterns (herringbone, matting, twill weaving, etc.). To give even greater strength to the fabric, carbon threads are laid in layers, each time changing the angle of the direction of weaving. The layers are held together with epoxy resins. This structure of carbon makes it possible to reinforce the fiber with additional elements that strengthen its structure and give it different colors and surface textures. These materials can be various threads, sequins, polymeric materials of different colors.
 

The main methods for manufacturing carbon plates are:

Pressing, in which the fabric is lined in a form, previously lubricated with a so-called release agent, designed to reduce the adhesion of surfaces to each other. They can be soap, wax, etc. The fabric is then impregnated with resin and the excess is removed under vacuum (vacuum molding) or under pressure. After polymerization of the resin, the product takes on a finished look.

Vacuum infusion allows you to create a laminated bag by superimposing layers of tissue on top of each other and vacuum is applied under the layers. Then, a binder is fed through the valve and, under the action of vacuum, it fills the voids and impregnates the carbon fabric.

Vacuum forming is the bonding of layers at high temperatures and then exposure to vacuum to form the volume of the product. This method is one of the cheapest.

Winding method, which consists in winding the impregnated roving on a pre-prepared form. After winding the required number of layers, the mold with the wound fabric is placed in a heating oven and polymerized.

The SMC/BMC method consists of placing the fabric in a mold heated to operating temperature. The mold closes, as a result of which, under pressure, the material spreads into the mold cavity and hardens. At the end of the cycle, the product is removed from the molds us, and its final machining and coloring is carried out.

Carbon fiber is used in various fields. In particular, in aircraft and rocket building, in the production of body parts for cars and motorcycles, household appliances and high-tech research instruments. And for about 20 years, carbon fiber has been widely used in the manufacture of knife handles in the middle and premium segments. At the same time, on folding knives, carbon can be both in the form of overlays on steel liners, and in the form of the only material of the handle, fixed with screws through the bonks.

The carbon used for the manufacture of knives, in addition to its main strength characteristics, must also have a fairly attractive appearance. It is this factor that increases its cost, complicating the production technology and requiring the highest quality raw materials. For sizing the layers, the most expensive and high-quality resins are used, and more expensive equipment, in particular chemical reactors (autoclaves). In addition, the carbon fiber is sandblasted to improve hand grip, which also increases production costs. It must also be remembered that working with carbon requires mandatory respiratory protection and special rooms with good ventilation, and this also leads to an increase in price.

The color palette and texture of carbon used on knives can be varied. Among the varieties of carbon are used:

Mosaic carbon, which can be both plain and multi-colored. Such carbon is used for radius spacers on knives with complex multi-section handles. Several dyeing technologies can be used in this carbon.

Marble carbon is a chaotic interlacing of carbon fibers, each of which reflects light differently, which makes it possible to shine from different viewing angles.

Carbon Lightning Strike ("lightning strike") with a copper thread in the form of a grid woven into carbon fabric throughout its volume. Outwardly similar to that used in the fuselages of American aircraft to protect against lightning strikes. This is a thin carbon, 3.2 mm thick twill weave. It has a deep and bright pattern.

Like any expensive, and at the same time difficult to manufacture material, carbon has a number of disadvantages. In the production of carbon fiber plastics, it is necessary to strictly adhere to the technological parameters, in violation of which the strength properties of products are sharply reduced. To control the quality of products, ultrasonic flaw detection, X-ray and optical holography, as well as acoustic testing can be used. Without them, the manufacturer works “by touch” and may not notice hidden defects. Another serious drawback of CFRPs is their low impact resistance. It is also necessary to remember that carbon fades over time and can significantly lose its main advantage - an attractive appearance. However, despite these shortcomings, carbon is rightfully the premium material for the best knives.