BEAR CLAW III knife handmade by master Pavlo Goncharenko, steel k390 in stainless damask laminate through three layers of copper, 64 HRC
- Brand: Майстерня ножів ручної роботи Павла Гончаренка
- Product Code: ВЕДМЕЖИЙ КІГОТЬ ІІІ - студія ножів ручної роботи Павла Гончаре
| Загальна довжина клинка mm: | 280 мм |
| Матеріал леза | Blade - steel k390 in stainless damask laminate through three layers of copper. BOHLER tool powder steel in stainless Damascus is a new martensitic steel from the Swedish-Austrian concern Bohler-Uddeholm |
| Твердість клинка (метал): | Hardness - 64 HRC |
| Матеріал руків'я: | Guard and butt Makume-gane (copper/neiselber), neiselber, copper, buffalo horn, stabilized mammoth tooth, mosaic lanyard tube, lanyard made of leather cord 3mm, beads from brown bear claws |
| Довжина леза | 145 мм |
- Availability: In Stock
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Description
SPECIFICATIONS:
The name of the knife: BEAR CLAW III knife handmade by master Pavlo Goncharenko, order to buy in Ukraine, steel k390 in stainless damask laminate through three layers of copper, 64 HRC
Knife type: Fixed blade
Brand: Workshop "Handmade Knives of Pavlo Goncharenko"
Steel sheet: One-piece, through-the-hole mounting on a screed and epoxy resin.
Blade sharpening: Sharpened to 36 degrees
Blade hardness: 64 HRC
Total length: 280 mm
Blade length: 145 mm
Blade width: 32 mm
Blade thickness: 4.0 mm
Handle thickness: 33 mm
Blade finish: Polished, etched
Guard and back material: Makume-gane (copper/neiselber)
Handle: Guard and back Makume-gane (copper/neiselber), neiselber, copper, buffalo horn, stabilized mammoth tooth, mosaic lanyard tube, 3mm leather cord lanyard, brown bear claw beads
Handle color: Dark brown
Handle impregnation: None
Handle coating: Polishing
Lanyard hole (for lanyard): Yes
Lanyard: 3mm leather cord lanyard, brown bear claw bead Scabbard
Scabbards: Hybrid of stabilized maple and acrylic with mother-of-pearl, vegetable tanned leather, stitched hand-stitched with waxed thread. Removable pendant, insert made of stabilized mammoth tooth and buffalo horn.
Model: BEAR CLAW handmade knife by master Pavlo Honcharenko, Damasteel - mosaic damask 60-61 HRC
Model number: 163
Country of birth: Ukraine
Craftsman: Master Pavlo Honcharenko, Ivankiv, UKRAINE, Workshop "Handmade Knives of Pavlo Goncharenko"
Best use: Hunting, cutting, cutting
Knife condition: New
The price is indicated together with the scabbard.
A sharpened knife is not a cold weapon.
Our knives are very sharp, so be very careful when opening and handling them. We are not responsible for injuries caused by the use of our knives.
Our products are intended for legal use by responsible buyers only. We will not sell our products to anyone under the age of 18.
Availability changes regularly, after confirming your order we will notify you of availability or when the item is ready. The product may differ slightly from the one shown in the photo.
K390 steel for knives: advantages and disadvantages of the alloy
K390 steel from the Austrian company Bohler is considered one of the best for making knives and other cutting tools. It is a tool powder steel intended for the production of stamping tools by cold deformation. It is used mainly for the manufacture of folding and hunting knives.
It is usually not used for the production of kitchen knives due to its high cost. This metal is used to make knives of a higher price category. But, like other types of steel alloys, the material has its advantages and disadvantages.
Features of the K390 alloy
K390 steel is characterized by increased hardness, strength and wear resistance. It is a high-speed steel with high toughness and resistance to mechanical wear. The special chemical composition provides high hardness of the material, thanks to which the cutting edge of the blade retains its sharpness for the longest time, even under harsh operation.
Currently, the brand is considered one of the best tool steels for cutting tools on the market. During the production process, a homogeneous carbide structure is formed, which guarantees maximum hardness and wear resistance.
It has the following chemical composition:
Carbon (C) – 2.5%. Provides hardness, wear resistance and toughness. Due to the high carbon content, the edge retains its sharpness for a long time.
Chromium (Cr) – 4%. Increases density and tensile strength. Provides protection against corrosion, but in this case insignificantly, since the chromium content is low. Slightly increases hardness.
Molybdenum (Mo) – 4%. Increases strength, hardness and annealing. Promotes protection against corrosion.
Silicon (Si) – 0.55%. Deoxidizes steel and increases strength.
Vanadium (V) – 9%. Improves toughness and strength. Increases resistance to abrasion and rust formation.
Tungsten (W) – 1%. Increases toughness, strength and annealing. Does not change hardness under the influence of elevated temperatures.
Cobalt (Co) – 2%. Increases hardness and strength. Allows hardening at elevated temperatures. Enhances the positive properties of other elements.
The HRC (Rockwell hardness) of this metal varies in the range of 62-66 units. This is one of the best indicators on the market of steels for the production of cutting tools. Due to this hardness, the cutting edge retains its hardness for the longest possible time. At the same time, it is quite difficult to sharpen such a hard alloy with household tools.
The material is relatively expensive, so premium knives are made from it. At the moment, the steel provides the maximum possible resistance of the cutting edge to abrasive wear. At the same time, high resistance to chipping and good impact strength are maintained.
Advantages of K390 steel
The main advantages of the Bohler K390 alloy include:
- Increased resistance of the cutting edge to abrasive and other mechanical wear. The closest analogue in terms of this characteristic is the CPM 10V brand, which was previously considered the standard, but was inferior to K390 in other parameters.
- Increased impact strength due to the presence of sufficient amounts of molybdenum, tungsten and cobalt. According to this characteristic, the metal is 1.5 times higher than CPM 10V.
- Good grinding and polishing properties. This allows deep scratches and other stress concentrators to be removed from the surface. The blade and cutting edge can be given an almost mirror-like shine.
- Increased compressive strength. This allows you to make all kinds of stamps, dies, band knives and other parts.
- Resistance to chipping. This ensures reliability and long service life of finished products.
- Homogeneity of the structure. Thanks to this, the characteristics are stable across the entire area of the blade.
- High hardness – 62-66 HRC. Even with intensive and harsh use, the sword remains sharp for a long time.
- Resistance to overheating during heat treatment. Steel withstands prolonged heat treatment without deterioration of properties, which guarantees high-quality hardening and annealing.
- The ability to manufacture blades by forging. This allows craftsmen to produce unique collectibles.
- The possibility of further improving performance during the manufacturing process of finished products. For example, some manufacturers perform additional heat treatment using multiple thermal cycling and cryogenic treatment.
Large knife with K390 steel
Disadvantages of the alloy
Despite the huge number of positive characteristics, the material has some disadvantages:
High varity. Knives of the highest price category are produced from this steel. The great vibratorists are victorious. Some private masters would like to produce seeds from this alloy in small batches. For the production of kitchen knives, as a rule, it is not necessary to stagnate.
Low corrosion resistance. The composition contains quite a lot of carbon and little chromium, so the material can rust. This is a kind of payment for maximum hardness. Therefore, the knife requires proper and regular care.
Sharpening an edge yourself is quite difficult. Steel is very hard and therefore difficult to sharpen. To do this, you need to use special sharpening tools, such as diamond and CBN stones. The difficulty of sharpening is one of the secondary factors in the high cost of finished products.
Risk of injury. When sharpening a knife, it is very easy to cut yourself, so you should work with it carefully.
Small selection of models. Only a few large manufacturers and private craftsmen make knives from this alloy. At the moment, the largest number of models is offered by the company
Conclusions and advice
K390 steel is deservedly considered one of the best tool alloys on the market for the production of cutting tools. However, products made from this material cannot be called a good choice for everyone. Knives with K390 blades are quite expensive, and the choice of models is small.
Large companies produce products in small batches, and individual craftsmen often produce only to order. Therefore, such products can be recommended to professionals who are familiar with steels and the features of their operation. Such a blade must be properly cared for, otherwise it can become covered with rust and pitting, which often affects not only the appearance, but also the performance characteristics.
A knife made of K390 should be used carefully, since a damaged edge will be expensive to restore due to the difficulty of resharpening. Otherwise, K390 is an excellent powder steel for making high-quality premium knives.
Well, you can buy a Damascus steel knife on the portal https://knife.net.ua/ , you can do so on our website or by contacting us by phone +380961711010.
Happy shopping! We will be glad to see you among our customers!
Mokume gane (Japanese: 木目金, lit. "metal tree") is a metalthat creates a pattern similar to the texture of a tree with age rings. It originated in Japan about 300 years ago.
The technique consists of hot welding several layers of metal, followed by their deformation and mechanical processing, and finally patination . As a result, the metal forms a pattern that resembles the sawn wood growths that are often found on tree trunks . The possibilities of the technique are not limited to this type of pattern. Mokume gane masters create a wide variety of patterns, including geometric ones.
Today, a wide variety of non-ferrous and, less commonly, ferrous metals are used to make products ( tableware , jewelry , luxury items , etc.) in the mokume gane technique . Traditionally, pure metals were used for mokume gane, including gold , silver , copper , and their special alloys : shibuiti , shakudo , kuromido . The most common combination used was copper-shakudo. Traditionally, after the product was formed, it was patinated in a special rokusho solution . This operation gave contrast to the different alternating layers of metals and emphasized the pattern.
HANDLE MATERIAL - MAMMOTH TUSK
Mammoth tusk is a rare raw material used to make decorative items, such as knife handles, gun grips, and jewelry. It is a unique natural element that is rarely found, so its value is quite high.
Today, mammoth tooth, after certain processing (stabilization), is widely used by master knifemakers. Stabilization is the process of polymerizing the material under vacuum with or without the use of fat-soluble dyes, while the material is impregnated with polymeric substances throughout.
MAMMOTH TOOTH HANDLE MATERIAL
Mammoth tooth is a manufactured material of animal origin. Its exceptional feature is the fact that its source is extinct animals - mammoths. Paleontologists have established that they lived on Earth about 10 thousand years ago, and their number was very large. The teeth of mammoths were not permanent and changed about four times during their lives. The fallen teeth, which modern scientists find during excavations, become the basis for decorative elements, including knife handles.
Due to the long stay in the soil, the material acquired a very unstable structure - the enamel became rock hard, and the dentin, on the contrary, became loose. But modern technologies for stabilizing materials have helped turn mammoth teeth into an excellent basis for creating luxurious knife handles. The polymer composite provides the products with resistance to corrosion and moisture, and the natural base gives a unique texture and intricate pattern.
Material features
Mammoth molars are used to create various products. Outwardly, they resemble elephant teeth, but they have a much different shade. Given the historical value and rarity, mammoth tusk is especially highly valued, since this animal became extinct long before our era. Tusks of prehistoric giants can be found not only in paleontological museums, but also on the shelves of jewelry stores, they are used to decorate the interior, used to create various decorative elements - of course, not in their original form, but in processed form.
The age of the material, according to scientists, is 10-40 thousand years. How mammoths lived has not been fully studied today. However, the remains of these giants found by scientists, their bones, teeth, even whole carcasses have allowed scientists to make serious progress in this field of research. The available data made it possible to find out what the mammals looked like, what they ate, what climatic conditions they lived in, what behavioral characteristics they had (for example, whether they led a herd or solitary existence).
The mammoth ate practically the same as a modern elephant: its diet consisted of plant food. In the world, the animal could feed on coniferous plants. They preferred rough food, which they easily chewed with their strong jaws and teeth, similar to large plates. An interesting feature of the mammoth's body was that as the old tooth wore out, a new one grew, displacing the old one and taking its place. Thus, the animal could change its teeth several times during its life. Absolutely all teeth changed in about a ten-year period, and the average life span of a mammoth was 40 years. In other words, one animal could survive an average of four complete changes of molars. It is because of this feature that people often find individual worn mammoth teeth but do not encounter other traces of it.
Appearance
If you look at a mammoth tooth, you can see a heterogeneous surface with ribbed edges. Bone, enamel and soft tissue in this case alternate. The material has a rather complex structure:
Its basis is dentin.
The dentin layer is covered with protective enamel.
It is worth noting that the mammoth had only 4 molars and 2 tusks, which protruded outward and served mainly for self-defense.
After special processing, the molar can be used to make various jewelry products. The density of the material is very high and resembles stone. In order to process such a product, the master needs to spend a lot of effort and time.
Raw material stabilization
To prevent the tooth and tusk from collapsing during use and manufacturing of products from it, stabilization technology is used. This is a crucial stage of processing, in which the following technologies are used:
Polycondensation.
Vacuum processing.
Application of special dyes.
All cavities of the tooth are filled with a polymer substance, due to which the base acquires reliable protection from climatic influences. Such a product does not deform, cracks do not appear on it, it becomes able to withstand high temperatures. The appearance of the material also changes, becomes more attractive and unique.
Before the advent of this technology, mammoth teeth and bones were rarely used for making souvenirs, because they did not have sufficient strength due to the large number of cracks and delaminations inside. In addition, tooth enamel has high hardness, which quickly leads to the unusability of the saw when processed. A stabilized product is much easier to further process. Mammoth tooth has become especially popular in the manufacture of knife handles. It looks unusual, attractive, and if you add dye, you can create a unique pattern that can give even such a rare thing a special individuality.
BUFFALO HORN
Asian buffalo
This is one of the largest animals belonging to the bovine family. The body length reaches 3 m, the height at the withers is 2 m. Large males can weigh a ton or even more. The horns of these animals are in the form of a crescent moon, directed in different directions and slightly backward.
The color of the animals is gray. The wool is not thick and moderately long. On the forehead it forms a small tuft. The body of this animal is massive, powerful, the limbs are strong, muscular. The hooves are large and cloven.
The head resembles a bull's, with a more massive skull. The eyes and ears are small. The tail is thin, long, with an elongated tuft of hair at the bottom.
African buffalo
It is slightly smaller than its Asian relative. Its height is up to 1.8 m at the withers, its body length is 3 m. It weighs slightly less.
The African buffalo is black or dark gray in color. This animal has pronounced sexual dimorphism: females are much smaller than males. Females also have a less powerful physique. Their horns are shorter and thinner.
The African buffalo has unique horns. Their bases in adults are fused, forming a kind of shield of bones. It is so strong that a rifle bullet cannot pierce it. The horns at the base diverge to the sides, bend down, and then with the same smooth bend go up and inward. Young individuals do not have such a shield of horns.
The African buffalo has very poor eyesight. It receives information from the surrounding world through its highly developed sense of smell and hearing.
In normal circumstances, the animal roars and snorts. In extreme circumstances, it moos loudly.
Lifestyle
The buffalo grazes at night. It spends the day in the shade of a tree, in a swamp, where the temperature is lower. It sleeps or chews gum. Often a puddle or hole can be a shelter from the heat. It needs a daily watering hole. During the day, the animal needs up to 40 liters of water. In this regard, the buffalo never moves further than 4 km from water.
Females with calves are especially sensitive. They are constantly on the alert, showing their anxiety. When alarmed, the buffalo raises its head and throws back its horns. A quiet sound is enough for the herd to flee from danger. In case of serious danger, the animals can reach speeds of over 50 km/h.
Buffaloes are reluctant to enter the water. However, they are good swimmers.
Buffalo habitats
Back in the 19th century, this animal was common in sub-Saharan Africa. Today, buffalo populations can be found in Southern and Eastern Africa, where human interference in the biosphere is least noticeable.
Buffalo can live in savannahs, tropical forests, mountains (up to a height of 3 km). The animal feels best in savannahs, where there is year-round access to drinking water and juicy food. Buffalo does not live far from water bodies. Due to human extermination, the animal is most attached to protected areas: there you can meet herds of hundreds of individuals.
Demeanor
In the north of Tanzania there is a national park near Lake Manyero. It is here that the largest population of these herbivores is found. The animals are attracted by the spacious pastures located in the green zone between the lake and the mountain slopes. Some adult bulls do not associate their lives with the laws of the herd, preferring an independent existence. The large size and large strong horns are a sufficient reason to feel safe.
Important decisions for the herd are made by high-ranking females, and controversial issues are resolved in the form of a special form of voting. Closer to lunch, the herd settles down to process the morning feed. Sometimes the leading females raise their legs, turning in the direction, while the others carefully follow them. As a result, the herd moves further in the direction chosen by the "majority of those who voted."
At this time, it is time for procedures related to personal hygiene. Local species of woodpeckers and herons are happy to provide their services in cleaning the skin, in exchange for insects collected under the fur. Thus, the birds help the buffaloes regulate the populations of parasitic insects capable of carrying pathogenic microbes. The immune system of an adult buffalo allows it to cope with almost all common diseases. However, weakened individuals can become victims of parasites.
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