|
Tungsten
|
|
|
|
|
|
Discovery date
|
1783
|
|
Discovered by
|
Juan and Fausto Elhuyar
|
|
Origin of the name
|
The name is derived from the Swedish 'tung sten' meaning heavy stone.
|
|
Atomic number
|
74
|
|
State at 20°C
|
Solid
|
|
Electron configuration
|
[Xe] 4f145d46s2
|
|
Melting point
|
3414°C, 6177°F, 3687 K
|
|
Boiling point
|
5555°C, 10031°F, 5828 K
|
|
Density (g cm−3)
|
19.3
|
|
Relative atomic mass
|
183.84
|
|
Key isotopes
|
182W, 184W, 186W
|
|
CAS number
|
7440-33-7
|
|
|
|
|
Properties
|
|
|
The word tungsten means “heavy stone” in Swedish. The chemical symbol for tungsten is W which stands for wolfram. Tungsten features the lowest vapour pressure ofall metals, very high moduli of compression and elasticity, very high thermal creep resistance and high thermal and electrical conductivity. It is inert to acids, even toaqua regia at room temperatures. As long as the when the temperature rose to 80 ° -100 ° C, In addition to hydrofluoric acid, the other acids have slightly effect totungsten.
|
|
Application
|
|
Cemented Carbides
Tungsten in Steel
Special Applications
Lamp Industry
Electronic & Electrical
Chemical Applications
Other Applications
|
|
Chengyi provides tungsten:
● rod
● bar
● plate
● wire
We also provide tungsten filament, tungsten boat, tungsten wire rope, and tungsten target, crucible, TIG welded electrode, as well as tungsten cube and tungsten heater.
Feel free to send us a message, give us a call 86-0917-3870-390 or mail us: info@chengyimetal.com
|
|
