SPECIFICATIONS:

The name of the knife: GOLDEN STREAM handmade knife by the master of the MV Knify studio, buy to order in Ukraine, steel di90mp, in laminate 95x18, 63 HRC
Knife type: Fultang, fixed blade

Model: GOLDEN STREAM handmade knife by the master of the MV Knify studio, buy to order in Ukraine, steel di90mp, in laminate 95x18, 63 HRC
Model number: 007
Country of birth: Ukraine
Craftsman: Master Valkevych Mykhailo (MV Knify), Sambir, Ukraine Handmade knife workshop of the master of the MV Knify studio
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.

Steel DI90-MP. Composition and properties.
Steel grade DI90-MP (17X5V3MF5S2-MP)  is a tool alloyed powder steel from the Ukrainian enterprise Dneprospetsstal (Zaporozhye). If we give the decoding of the name itself, then D is a manufacturing plant, I is an experimental plant, MP is powder metallurgy. The main purpose of the article DI90-MP: the manufacture of dies and punches for stamping equipment, heavily loaded elements of cold deformation dies operating under conditions of increased wear. The hardness of DI90-MP is 61-62 HRC, secondary hardness - 63-65HRC. Requires attention in heat treatment. The microstructure is uniform, with high-hardness chromium and vanadium carbides. The steel is considered a very good steel for making designer knives and blades: good wear resistance and impact toughness (decreases after secondary hardening), holds sharpening very well. The main drawback is low corrosion resistance - a blade made of DI90-MP rusts quickly, does not like dampness and moisture.

According to the manufacturer's official website, this steel is no longer being produced. Perhaps that is why the small batches that do occasionally appear on sale are so expensive.

Similar analogues:

PROPERTIES OF STEEL ELEMENTS:

Carbon (C):  improves edge retention and increases toughness; increases hardness and wear resistance; reduces ductility; at high values, reduces corrosion resistance.

Chromium (Cr, Chromium) : increases hardness, tensile strength and density; increases corrosion resistance (>11% makes the alloy stainless).

Manganese (Mn, Manganese):  increases calcination, wear resistance, and toughness; used as a deoxidizer and degasser to remove oxygen during metal melting; in high % increases hardness and brittleness.

Molybdenum (Mo, Molybdenum):  increases hardness, strength, calcination and density; improves machinability and corrosion resistance.

Nickel (Ni, Nickel): adds toughness;  improves corrosion resistance; reduces hardness.

Phosphorus (P, Phosphorus):  Considered a harmful impurity. Dissolves in ferrite, thereby increasing strength, but reducing ductility and impact toughness with an increased tendency of the steel to become brittle. In low-alloy carbon steels, about 0.1% phosphorus increases strength and resistance to atmospheric corrosion. Considered a harmful impurity.

Silicon (Si):  increases strength; used as a deoxidizer and degasser to remove oxygen during metal melting.

Sulfur (S, Sulfur):  is usually considered a harmful impurity that affects the plasticity, toughness, weldability, corrosion properties, surface quality of steel, etc. The harmful effect of sulfur reduces the presence of manganese in steel. The sulfur content in quality steels does not exceed 0.02-0.03%.

Vanadium (V, Vanadium):  increases strength, wear resistance, increases density and toughness; increases corrosion resistance by increasing the oxide film; vanadium carbide inclusions are very hard.

Tungsten (W):  adds strength, toughness, and improves hardenability; maintains hardness at high temperatures.

Cobalt (Co, Cobalt):  increases strength and hardness, allows hardening at higher temperatures; enhances the effects of other elements in complex steels.

Niobium (Nb, Niobium):  limits carbide growth; limits machinability; creates the hardest carbides.

Nitrogen (N):  used instead of carbon in the steel matrix (nitrogen atoms function similarly to carbon atoms, but have advantages in corrosion resistance).

Well,  you can buy a knife made of powder steel  on our website  knife.net.ua  or by contacting us by phone +380674072030

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

Ironwood - iron wood - handmade knives

In nature, ironwood is extremely rare, so it occupies an honorable place in the Red Book. However, in terms of its properties, each ironwood is not inferior in density to cast iron. Its bark can withstand fire from firearms, but at the same time it hopelessly sinks in water. It is worth noting that this is not a separate class of trees, but a whole group collected from different species. It includes several dozen species of plants with unusually dense wood. They can be found on each of the continents. Moreover, the raw materials are used both in the industrial industry and in medical practice.

What is special about these trees?

It is quite difficult to recognize a "stone" species of perennial plant with the naked eye. Especially if they are on the verge of extinction. However, they are characterized by the following features:

• the age of such long-livers is at least 2 hundred years;
• wood fiber is resistant to corrosion processes and does not deteriorate under the influence of strong acids;
• the bark contains many tannins that protect their "owners" from all kinds of parasites, as well as from rotting fungi;
• the log will definitely go under water, since the density of wood is 1 t / m³, taking into account the humidity of 12%, for this reason such species grow quite slowly;
• The height of each exceeds 25 meters, and the trunk circumference reaches more than 200 cm.

All these properties are necessary for the iron tree to survive in the harshest climatic conditions. Sharp temperature drops in Russia, African drought or humid European climate will not be able to harm this phenomenon of nature. Such tree species adapt perfectly in any adverse environment. For this purpose, they are equipped with a considerable number of adaptations, ranging from the unique structure of the trunk / roots and ending with the chemical composition of the bark. In this regard, they are widely used in production:

• furniture;
• building structures;
• cars;
• cosmetics;
• decorative elements;
• underwater equipment.

Mammoth Tusk: A Jewel Mined in Permafrost

Most of our contemporaries mammoth – “a monster round, mischievous, huge…” A large, disproportionately built elephant. A ferocious beast, densely overgrown with dense shiny or long brown and patchy wool. A four-legged hero with heavy tusks at the ready, fearlessly chasing polar bears. Or running away in confusion from a handful of crazy bipeds… That’s what a mammoth is in the performance of artists from science.
Mammoths – are they extinct?

It is generally accepted that mammoths lived as long ago as dinosaurs. However, scientists have reliably established: the last herds of mammoths lived on Wrangel Island about three and a half millennia ago. The Pyramid of Cheops was already over a thousand years old at that time. Moses was preparing his tribesmen for a forty-year dessert trip. The Mediterranean volcano Santorini, having erupted, buried the Mycenaean civilization a hundred years ago.

These are herds; individual families of mammoths, according to the assurances of lovers of circumpolar hunting solitude, exist safely to this day. Whether this is true or not is not known for certain. However, there is no doubt that in the past mammoths lived everywhere in Europe, Asia, and America.

Permafrost is the best refrigerator for mammoth bone

Mammoth bone cemeteries are found everywhere: in France, in the Czech Republic, in Ukraine. But only where the land has been in a state of permafrost for thousands of years, mammoth tusks are preserved in their original (or almost original) form. One of the largest burials in the world is Yakutia, where a large amount of this highly valuable material is still mined annually. According to experts in the North Yakutsk province, the potential resources could be about 450 thousand tons.

Man has always valued the fossilized tusk of a mammoth. Dense, strong, massive, often white, usually yellowish, often colored with mineral salts in natural colors, mammoth bone has been used as a raw material for bone carving for many centuries.

A material that is valued by kings and rulers all over the world!

Tsar Alexei Mikhailovich, father of Peter the Great, introduced a state monopoly on mammoth bone in the mid-seventeenth century. On his initiative, the extraction and supply of mammoth tusks to the bone-carving workshops of Kholmogory and Moscow (Armorial Chamber) became stable.

Peter the Great, fascinated by crafts, carved a snuffbox from mammoth bone himself. Foreign craftsmen also liked the material: among the goods traditionally shipped from Russia to the West, there was always a place for the bone of an extinct animal.

The only one allowed

Today, mammoth tusk is the only high-value bone material permitted for extraction and use. Elephant tusk, commonly known as ivory, has been moved to the category of prohibited materials. Similar decisions have been made regarding sperm whale tooth (due to the complete abandonment of whaling) and walrus tusk (which is mined by northern peoples in small quantities).

Elk antler and femur (the tubular thigh bone of large animals) are not able to give the visual effect produced by products made of mammoth bone. The internal glow of the figures, the warm shades of a living body, the unsurpassed plasticity of the smallest details - these are just some of the advantages inherent in mammoth tusk.

Universality, nobility, uniqueness

The physical qualities of mammoth tusk are unique. Modern technologies are only trying to create substances that are close in properties to natural mammoth bone. Allowing for the finest detailing, allowing the illusion of soft draperies that naturally fall, mammoth tusk has deservedly become the most sought-after material for bone carving.

A mammoth tusk with a uniform structure is in particular demand. The uniformity of the color of the bone mass, the absence of cracks and other defects allows the artist to create regardless of the quality of the material. However, the integrity of the mammoth bone mass is now a rarity and the defects of the material force the artist to be more inventive in the composition, which ultimately turns into an additional advantage in the sculpture.