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Tungsten Comprehensive Mechanical Properties
Sep 25, 2017

Tungsten, a metal element. Atomic number 74, atomic weight 183.84. Tungsten Steel gray or silver white, high hardness, high melting point. The use of tungsten for the manufacture of filament and high-speed cutting alloy steel, super-hard mold, also used for optical instruments, chemical equipment.

Tungsten is a nonferrous metal. Usually people according to the color and nature of metal metal into two categories: ferrous metals and non-ferrous metals. Black metal mainly refers to iron, Tungsten manganese, chromium and its alloys, such as steel, pig iron, ferroalloy, Tungsten cast iron and so on. Ferrous metals other than metal are called non-ferrous metals. Tungsten belongs to the category of nonferrous metals. The strength and hardness of the colored alloy are generally higher than pure metal, the resistance is larger than that of pure metal, Tungsten the temperature coefficient of resistance is small, and it has good comprehensive mechanical properties. Thus, Tungsten as a nonferrous metal, tungsten has a very high strength and hardness. Because of this feature, with a high hardness, wear resistance of tungsten carbide is a large-scale application in cutting tools, mining tools.

Tungsten is a strategic metal. Is an important part of contemporary high-tech new materials, a series of electronic optical materials, special alloys, new functional materials and organometallic compounds are required to use a unique performance of tungsten. Although the amount is not big, but it is essential, Tungsten lack it can not. And thus widely used in contemporary communications technology, electronic computers, Tungsten aerospace development, medicine and health, photographic materials, optoelectronic materials, energy materials and catalyst materials

Tungsten in the steel industry is an important alloying elements, can improve the strength of steel, hardness and corrosion resistance. Tungsten containing tungsten carbide (tungsten carbide), hardness, wear resistance, corrosion resistance and heat resistance, used in the manufacture of drill bits,Tungsten tools and high temperature parts. 60% -90% tungsten-containing tungsten (or tungsten) alloy is an excellent contact material, can be used as a key, knife-shaped switch, circuit breakers and spot welding electrodes. Tungsten nickel-copper alloy can be used as α and γ-ray protective screen. In the rocket engine, tungsten and tungsten by copper (silver) made of non-cooling nozzle can withstand 3127 ℃ high temperature and pressure high pressure,Tungsten high thermal stress. Tungsten High-density tungsten alloy is an important material for armor-piercing, in the bowling, Tungsten javelin and other sports equipment also has application. In the lighting and electronics industry as a luminescent material emission electrode and x-ray cathode target. Can also be used for high temperature resistance furnace heating body. Tungsten and tungsten rhenium (26%) alloy, can measure the temperature range from room temperature to 2835 ℃. Tungsten selenide can be used as a lubricant for their own lubrication, the lubrication temperature range of -217-350 ℃. Tungsten The pigments of the tungsten compounds are durable.

The texture of pure tungsten can be used to make filament wire and Lunqin line cathode and so on. Because tungsten metal is resistant to high temperature without deformation, it is used to make high-speed steel, for the industrial use of high-speed cutting tools and military essential essential material. Sodium tungstate can be used as a mordant for silk fabrics, as a fire retardant for cotton fabrics, Tungsten as well as for coloring agents on glass and pottery. It can also be made into cobalt-chrome tungsten alloy and other metal alloys for the production of various alloy bits The

2. Scheelite color is white, Tungsten there are yellow brown, green and light red and so on. King Kong luster. It is a square crystal system, the formation of double-cone pseudo-octahedral or plate-like crystals, crystal surface sometimes visible oblique stripes, which are inserted double crystal are more common; some crystal was shell-like, kidney, granular and compact block The





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