Tungsten Product
Tungsten (W) (Wolframium) is a chemical element of group VI of the
periodic system, atomic number 74, atomic mass 183.85. . Light gray
metal, the most refractory of metals. It resembles steel. Due to the
possession of rather unique properties,
Tungsten has:
sufficiently high density, which is equivalent to 19.3 g / cm3;
high melting point, component 34220С;
sufficient electrical resistance - 5.5 μOhm * cm;
a normal indicator of the coefficient of the linear expansion parameter,
equal to 4.32;
the highest among all metals boiling temperature equal to 55550С;
low evaporation rate, even despite temperatures exceeding 2000C;
relatively low electrical conductivity. However, this does not prevent
tungsten from remaining a good conductor.
All this makes tungsten a very strong metal, which is not amenable to
mechanical damage. But the presence of such unique properties does not
exclude the presence of disadvantages that tungsten also has. These
include:
high fragility when exposed to very low temperatures;
high density, which complicates the process of its processing;
low acid resistance at low temperatures.
Tungsten Applications
Tungsten - the basis of hard alloys and many heat-resistant alloys, is
part of wear-resistant alloys and tool steels. From it and alloys are
made: parts of aircraft engines, incandescent filaments and parts in
electric vacuum devices. Also, due to its high density, this metal is
used for counterweights, artillery shells, bullets and ultra-high-speed
gyro rotors to stabilize the flight of ballistic missiles (up to 180
thousand rpm).
A wide range of applications are compounds of this metal. For example,
hard alloys and composite materials based on WC tungsten carbide are
used for the mechanical processing of metals and nonmetallic structural
materials in mechanical engineering (turning, milling, planing,
chiselling), drilling, and mining. Tungsten sulfide WS2 is used as a
high-temperature (up to 500 ° C) lubricant. In the production of solid
electrolyte for high-temperature fuel cells, tungsten trioxide WO3 is
used. Compounds of this metal are also used in the paint and varnish,
textile industry and as a catalyst and pigment in organic synthesis.
The industry produces a wide variety of products from this refractory
material. The most common are tungsten electrodes, wire, tungsten
powder, stick, sheet.
;
.
Tungsten
Cobalt
Iron
Carbon
Sulfur
Copper
Zinc
Lead
Total Impurities
99.99
<0.00002
0.002
<0.01
0.0002
0.00005
0.00005
0.00002
<0.01
Diam
thickness
length
width
purity
Details
Foil
0.03mm -0.8mm
>3000mm
2mm-150mm
99.99%
Details
sheet
0.03mm-50mm
100mm
100mm
99.99%
Details
wire
0.025mm
-0.05mm
7000-8000m
99.99%
Details
Stab
2.0mm
-150mm
<1000mm
99.99%
Details
powder
50nm- 20μm
99.99%
Details
Pellets
6mm-13mm
99.99%
Details
granules
6mm-13mm
99.99%
Details
Sputter
target
3mm-300mm
O30--2000mm
99.99%
Details
crucible
30ml-50ml
99.9%
Details
mesh
0.05-2mm
hole:0.3X0.6mm, 0.5X1mm
............20X40mm
99.9%
Details
foam
0.3-10mm
100mm
100mm
Details
Tungsten (W) (Wolframium) is a chemical element of group VI of the
periodic system, atomic number 74, atomic mass 183.85. . Light gray
metal, the most refractory of metals. It resembles steel. Due to the
possession of rather unique properties,
Tungsten has:
sufficiently high density, which is equivalent to 19.3 g / cm3;
high melting point, component 34220С;
sufficient electrical resistance - 5.5 μOhm * cm;
a normal indicator of the coefficient of the linear expansion parameter,
equal to 4.32;
the highest among all metals boiling temperature equal to 55550С;
low evaporation rate, even despite temperatures exceeding 2000C;
relatively low electrical conductivity. However, this does not prevent
tungsten from remaining a good conductor.
All this makes tungsten a very strong metal, which is not amenable to
mechanical damage. But the presence of such unique properties does not
exclude the presence of disadvantages that tungsten also has. These
include:
high fragility when exposed to very low temperatures;
high density, which complicates the process of its processing;
low acid resistance at low temperatures.
Tungsten Applications
Tungsten - the basis of hard alloys and many heat-resistant alloys, is
part of wear-resistant alloys and tool steels. From it and alloys are
made: parts of aircraft engines, incandescent filaments and parts in
electric vacuum devices. Also, due to its high density, this metal is
used for counterweights, artillery shells, bullets and ultra-high-speed
gyro rotors to stabilize the flight of ballistic missiles (up to 180
thousand rpm).
A wide range of applications are compounds of this metal. For example,
hard alloys and composite materials based on WC tungsten carbide are
used for the mechanical processing of metals and nonmetallic structural
materials in mechanical engineering (turning, milling, planing,
chiselling), drilling, and mining. Tungsten sulfide WS2 is used as a
high-temperature (up to 500 ° C) lubricant. In the production of solid
electrolyte for high-temperature fuel cells, tungsten trioxide WO3 is
used. Compounds of this metal are also used in the paint and varnish,
textile industry and as a catalyst and pigment in organic synthesis.
The industry produces a wide variety of products from this refractory
material. The most common are tungsten electrodes, wire, tungsten
powder, stick, sheet.
;
.
Tungsten | Cobalt | Iron | Carbon | Sulfur | Copper | Zinc | Lead | Total Impurities | ||
---|---|---|---|---|---|---|---|---|---|---|
99.99 | <0.00002 | 0.002 | <0.01 | 0.0002 | 0.00005 | 0.00005 | 0.00002 | <0.01 |
Diam | thickness | length | width | purity | Details | ||
---|---|---|---|---|---|---|---|
Foil | 0.03mm -0.8mm | >3000mm | 2mm-150mm | 99.99% | Details | ||
sheet | 0.03mm-50mm | 100mm | 100mm | 99.99% | Details | ||
wire | 0.025mm -0.05mm |
7000-8000m | 99.99% | Details | |||
Stab | 2.0mm -150mm |
<1000mm | 99.99% | Details | |||
powder | 50nm- 20μm | 99.99% | Details | ||||
Pellets | 6mm-13mm | 99.99% | Details | ||||
granules | 6mm-13mm | 99.99% | Details | ||||
Sputter target |
3mm-300mm | O30--2000mm | 99.99% | Details | |||
crucible | 30ml-50ml | 99.9% | Details | ||||
mesh | 0.05-2mm | hole:0.3X0.6mm, 0.5X1mm ............20X40mm |
99.9% | Details | |||
foam | 0.3-10mm | 100mm | 100mm | Details | |||