|
gptkbp:instance_of
|
gptkb:chemical_compound
|
|
gptkbp:bfsLayer
|
4
|
|
gptkbp:bfsParent
|
gptkb:Simon_Whitlock
|
|
gptkbp:accessories
|
gptkb:Australia
gptkb:China
gptkb:Russia
gptkb:United_States
gptkb:Native_American_tribe
|
|
gptkbp:category
|
transition metal
|
|
gptkbp:color
|
gray
|
|
gptkbp:cooling_system
|
173 W/(m· K)
|
|
gptkbp:difficulty
|
7.5 on Mohs scale
|
|
gptkbp:discovered_by
|
gptkb:Juan_José_Elhuyar
1783
|
|
gptkbp:ecological_role
|
none known
|
|
gptkbp:electronegativity
|
2.36
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Tungsten
|
|
gptkbp:is_found_in
|
wolframite
ore minerals
scheelite
|
|
gptkbp:isotopes
|
74
W-182
W-184
W-186
W-183
|
|
gptkbp:material
|
high-speed steel
tungsten carbide
|
|
gptkbp:melting_point
|
3422 ° C
5555 ° C
|
|
gptkbp:population
|
19.25 g/cm³
|
|
gptkbp:products
|
tungsten carbide
tungsten disulfide
tungsten hexafluoride
tungsten trioxide
tungsten(VI) chloride
|
|
gptkbp:safety_features
|
heavy metal
non-toxic
high melting point
|
|
gptkbp:social_structure
|
body-centered cubic
-2, 0, +2, +3, +4, +5
|
|
gptkbp:symbol
|
W
|
|
gptkbp:thermal_design_power
|
4.5 × 10⁻⁶/ K
|
|
gptkbp:type_of
|
7440-33-7
|
|
gptkbp:uses
|
gptkb:weapon
cutting tools
electrical contacts
light bulb filaments
|
|
gptkbp:was_a_response_to
|
low
|