Rare and refractory metals
The cost of rolled metal on the site. The best price from the supplier.
This section reflects the characteristics of the following products:
- Molybdenum (wire);
- Molybdenum (circle);
- Molybdenum (leaf);
- Tungsten rod;
- Tungsten electrodes;
- Tungsten wire.
Characteristic
Refractory rare metals (with an unfinished electronic d-level) belong to the transition elements of the fourth, fifth, sixth group of the periodic system of D. I. Mendeleev, This feature determines a number of their chemical and physical properties: refractoriness — when the melting point can be from 1660 degrees (melting t° titanium) up to 3400 degrees (melting t° tungsten), corrosion resistance, high strength. The variable valency of these elements determines the variety of various chemical compounds. All of them can form hard refractory carbides, silicides, and borides.
Receipt
Since the melting point of refractory metals is very high, electron beam (arc) melting or powder metallurgy methods are usually used. Further technology consists in processing the resulting powder or porous mass — a sponge. Sintering is carried out by traditional for powder metallurgy electron-beam or arc melting.
Relevance
The industrial production of almost all rare refractory metals at attractive market prices was established before the middle of the twentieth century, and in the second half of the twentieth century it began to develop at a rapid pace, caused by the growing needs of the rocket and space, aviation, and nuclear industries.
Application
Refractory metals have a common area of use, primarily as an alloying component of hard heat-resistant alloys. Many of these alloys are used in electronic, electrovacuum technology. A number of modern industries depend on structural materials based on refractory elements. Instrumentation, mechanical engineering, metallurgy, chemical and nuclear industries do not have an equivalent alternative to products based on titanium, cobalt, molybdenum, tantalum, vanadium.
Tungsten
Atomic number — 74, atomic weight — 183.9, Melting point is 3395 + 15 degrees. The electrical resistance is almost 3 times yours than that of copper. This metal serves as the basis for heat-resistant alloys, as well as the hardest steels (high-speed tool steels). Its processing (forging, rolling, drawing) is possible only after heating. The disadvantages of tungsten include a very high density = 19.3 g / cm3, brittleness at low temperatures, low resistance to oxidation.
Alloys based on tungsten
Tungsten gives heat resistance, hardness, wear resistance to elite tool steels. It is literally indispensable for parts of electrovacuum devices, armor coating, filaments. Its high density is beneficial for counterweights of artillery shells, for bullets and for high-speed (up to 180 thousand revolutions per minute) gyroscope rotors, which stabilize the flight of a ballistic missile.
Hard alloys based on tungsten carbide are indispensable during the machining of steels and structural non-metallic materials (turning, milling, chiselling and planing), as well as during well drilling. Tungsten sulfide WS 2 is a very high quality and heat resistant grease (up to 500 degrees). The so-called tungsten trioxide is used in the production of a solid electrolyte for heat-resistant cells.
Provider
Supplier «Auremo» offers to buy rare and refractory metals in bulk or in installments. Large selection of semi-finished products in stock. Compliance with GOST and international quality standards. Rare and refractory metals are always available, the price is optimal from the supplier. We are waiting for your orders. Buy rare and refractory metals today. To wholesale customers the price is preferential.
Buy, favorable price
When choosing rare and refractory metals, a number of factors should be taken into account. The company «Auremo» has a wide selection of heat-resistant rolled products to order. Today you can buy wire, rod, circle, pipe made of rare and refractory metals on the most favorable terms, the price is determined by the technological features of production without additional costs. Our experts are always ready to help with the choice of the necessary products, on which the performance and reliability of future equipment depends. We guarantee the high quality of our products and timely delivery. The website of the company displays all the information about the products. Wholesale buyers receive preferential discounts.
