What's Tungsten?
Tungsten is a kind of metal elements. Its element symbol is “W”; Its atomic sequence number is 74 and its atomic weight is 183.84. It’s white, very hard and heavy. It belongs to chromium family and has stable chemical properties. Its crystal system occurs as the body-centered cubic crystal structure (BCC). Its melting point is around 3400℃ and its boiling point is over 5000℃. Its relative weight is 19.3. It’s a kind of rare metal.
Tungsten Rod
| Tungsten , having high melting point, is used in many industrial fields because of their excellent high-temperature resistance. It is used for electric bulbs filament, discharge-lamp electrodes, electronic bulb components, welding electrodes, heating elements, etc. |
 | Specification(Rod)
|
Symbol |
Composition |
Length |
Length tolerance |
Diameter(Diameter tolerance) |
|
MMETR9996 |
W99.96%以上 |
75mm～150mm |
1mm |
φ1.0mm-φ6.4mm(±1%) | 【others】
Alloys having different additional composition, tungsten alloy including oxides, and tungsten-molybdenum alloy etc. are available. Please contact us for details.
Tungsten Powder
| Tungsten powder is used as the raw material for super-hard alloy, powder metallurgy products such as welding contact point as well as other kinds of alloy. In addition, due to our company’s strict requirements about quality management, we can provide highly pure tungsten powder with purity over 99.99%. |
 |
Specification((Powder)
|
Symbol |
Avg.granularity （μm) |
Chemical Component |
|
W(%) |
Fe(ppm) |
Mo(ppm) |
Ca(ppm) |
Si(ppm) |
Al(ppm) |
Mg(ppm) |
O(%) |
|
OMETP75 |
7.5～8.5 |
99.9≦ |
≦200 |
≦200 |
≦30 |
≦30 |
≦20 |
≦10 |
≦0.1 |
|
OMETP80 |
8.0～16.0 |
99.9≦ |
≦200 |
≦200 |
≦30 |
≦30 |
≦20 |
≦10 |
≦0.1 |
|
OMETP95 |
9.5～10.5 |
99.9≦ |
≦200 |
≦200 |
≦30 |
≦30 |
≦20 |
≦10 |
≦0.1 |
Application
It has the highest melting point among metals. Due to its comparatively larger resistance, tungsten is often used as tungsten wires of light bulbs. Moreover, due to its comparatively higher relative weight and hardness, tungsten is used in depleted uranium bombs which have extremely high dangerous index. Due to the closeness of their relative weights, tungsten is often used in the manufacturing of fake gold bullions. It’s also used as the substitutes of lead shots and bobs for shot guns for hunting. However, due to reasons including costs and processing, there’s a huger demand for lead. Tungsten is also used in the manufacturing of tungsten steel. |
