Articles of tungsten
Supplier — the company AvecGlob — offers at affordable prices from the manufacturer a variety of products from tungsten. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Tungsten is a gray-white shiny metal that is solid at room temperature. Tungsten has the highest melting point and low vapor pressure of all known metals, and at temperatures above 1650 ° C has the highest tensile strength. Products made of tungsten have excellent corrosion resistance and poorly interact with most mineral and organic acids.
Urgency of application
Tungsten products with a diameter of 0.007 mm, and with any surface quality, are used in heating elements of industrial equipment: metallurgical and heating furnaces, units of zone-vacuum melting, etc.
Volumetric products of tungsten are usually supplied after electropolishing, resulting in a completely uniform surface.
Tungsten products are easily obtained by powder metallurgy methods, while unalloyed and doped compositions in the form of tungsten pseudoalloys with other metals having a lower melting point can be obtained.
Flat tungsten articles can be made from all available metallurgical compositions at a ratio of width to thickness of 8: 1.
The chemical purity of tungsten products is determined by the total amount of impurities (in parts per million):
|Element / Cleanliness:||Class 3N7||Class 3N8||Class 4N|
Physical and mechanical properties
Density, kg / m 3 — 19300;
Melting point, 0 С — 3410;
The coefficient of thermal conductivity in the temperature range 20… 500 0 С, W / Mgrad — 17,3;
Specific heat at room temperature, J / kggrad — 317;
The coefficient of thermal expansion in the temperature range 20… 500 0 С, μm / deg — 4,3;
The limit of temporary resistance, MPa — not less than 800… 1100;
Yield strength, MPa — not more than 715;
Relative elongation,% — 0… 1;
Modulus of elasticity, GPa — 417;
Hardness according to Brinell, HB, no more than 488.
Sorting and processing features
Tungsten products can be supplied in any assortment, including forgings, both with heat treatment, and without it.
The fine-dispersed form of tungsten easily ignites, and can ignite spontaneously. Tolerance for tungsten for insoluble compounds is 5 mg / m3 of air; for soluble compounds, 1 mg / m3 of air.
Supplier — AvekGlob Company — offers to purchase any tungsten products in a wide range of brands and profiles. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.