(w) tungusten,wolfram

listen to the pronunciation of (w) tungusten,wolfram
Türkisch - Englisch
(Nükleer Bilimler) tungsten
{n} a metal of a brown or steel gray color
Chemical symbol W Gray metal with high tensile strength; ductile and malleable, immune to atmospheric influences and all acids but strong alkalis Extremely pliable; can be drawn into filament for incandescent bulbs, rolled into thin sheet for radio tubes; ground into powder, and mixed with carbon and then embedded in soft metal (such as cobalt) to produce carbide tools, or alloyed within steel to make abrasion-resistant tool and die steels
a metallic chemical element (symbol W) with an atomic number of 74. The symbol is derived from the Latin word wolframium
1 The metal that lamp filaments are made of 2 Sometimes refers to the color temperature in degrees Kelvin that simulates a common photo lamp (3200K)
A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible
Rare metallic element with extremely high melting point (3410o Celsius) Used in manufacturing TIG electrodes
Tungsten is a gray-white heavy high-melting ductile hard polyvalent metallic element that resembles chromium and molybdenum in many of its properties and is used especially for electrical purposes and hardening alloys (as steel)
This is a metal found in a number of minerals, but chiefly in wolframite In colloidal form it is used in the filaments of lamps As tungsten carbide it is used in a wide variety of cutting tools to give them long cutting life
Symbol W (Wolframium)
Exceptionally strong, white to grayish, and brittle, it has the highest melting point (6,170 °F [3,410 °C]), greatest high-temperature strength, and lowest thermal expansion coefficient of any metal. Its chief uses are in steels to increase hardness and strength and in lightbulb filaments (see incandescent lamp). It is also used in electrical contacts, rocket nozzles, chemical apparatus, high-speed rotors, and solar-energy devices. Tungsten is relatively inert, but compounds (in which it has various valences) are known. The most important, tungsten carbide, noted for its hardness, is used to increase the wear-resistance of cast iron and of tools' cutting edges
Specific gravity, 18
Steel-gray, metallic element, mp 3380°C (6116°F) used for electric lamp filament, x-ray tube target, and as alloy element in high-speed steels
{i} (W) bright-gray rare metallic element having a high melting point and used in alloys of metal(Chemistry); element found in electric lamp filaments and high-speed cutting tools
Atomic weight, 183
When alloyed in small quantities with steel, it greatly increases its hardness
When used as an alloying element it increases the strength of steel at normal and elevated temperatures Its "red hardness" value makes it suitable for cutting tools as it enables the tool edge to be maintained at high temperatures In conjunction with other alloying elements it finds applications in heat resisting and other severe service conditions
A metal commonly used to make the plugs used for connecting metal wires to one another or to the devices in integrated circuits Tungsten is usually deposited by CVD, unlike almost all the other commonly used metals in semiconductor manufacturing which are generally deposited by sputtering This makes it excellent for filling deep narrow holes such as the contact holes connecting the metal wires to each other and to the semiconductor devices in an integrated circuit back to top
A high melting point (3380°C) metal used in pure or near pure state as an electrode material
a heavy gray-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
(w) tungusten,wolfram
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