HHomeBackground Color:He
LiBeTungsten Main PageBlack White GrayBCNOFNe
NaMgTungsten Pictures PageAlSiPSClAr
KCaTungsten Isotope DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnUutUuqUupUuhUusUuo

Technical data for Tungsten

Click any property name to see plots of that property for all the elements.

Overview
NameTungsten
SymbolW
Atomic Number74
Atomic Weight183.84
Density19.25 g/cm3
Melting Point3422 °C
Boiling Point5555 °C

Thermal properties
PhaseSolid
Melting Point3422 °C
Boiling Point5555 °C
Absolute Melting Point3695 K
Absolute Boiling Point5828 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion35 kJ/mol
Heat of Vaporization800 kJ/mol
Heat of CombustionN/A
Specific Heat132 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity170 W/(m K)
Thermal Expansion4.5×10-6 K-1

Bulk physical properties
Density19.25 g/cm3
Density (Liquid)17.6 g/cm3
Molar Volume9.5501×10-6
Brinell Hardness2570 MPa
Mohs Hardness7.5 MPa
Vickers Hardness3430 MPa
Bulk Modulus310 GPa
Shear Modulus161 GPa
Young Modulus411 GPa
Poisson Ratio0.28
Refractive IndexN/A
Speed of Sound5174 m/s
Thermal Conductivity170 W/(m K)
Thermal Expansion4.5×10-6 K-1

Reactivity
Valence6
Electronegativity2.36
ElectronAffinity78.6 kJ/mol
Ionization Energies
770, 1.7×103 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A
Heat of CombustionN/A
DOT Hazard Class4.1
DOT Numbers3089
EU NumberN/A
NFPA Fire Rating2
NFPA HazardsN/A
NFPA Health Rating1
NFPA Reactivity Rating1
RTECS NumberRTECSYO7175000
NFPA LabelNFPA Label

Classifications
Alternate NamesWolfram
Names of AllotropesNone
Blockd
Group6
Period6
Electron Configuration[Xe]4f145d46s2
ColorGray
Discovery
1783 in Spain
Gas phaseN/A
CAS NumberCAS7440-33-7
CID NumberCID23964
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberRTECSYO7175000

Electrical properties
Electrical TypeConductor
Electrical Conductivity2×107 S/m
Resistivity5×10-8 m Ω
Superconducting Point0.015

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility4.59×10-9
Molar Magnetic Susceptibility8.44×10-10
Volume Magnetic Susceptibility0.0000884

Abundances
% in Universe5×10-8%
% in Sun4×10-7%
% in Meteorites0.000012%
% in Earth's Crust0.00011%
% in Oceans1.2×10-8%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius193 pm
Covalent Radius146 pm
Van der Waals RadiusN/A
Crystal StructureBody Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
316.52, 316.52, 316.52 pm
Space Group NameIm_ 3m
Space Group Number229

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers5D0
Neutron Cross Section18.4
Neutron Mass Absorption0.0036
Known Isotopes
158W, 159W, 160W, 161W, 162W, 163W, 164W, 165W, 166W, 167W, 168W, 169W, 170W, 171W, 172W, 173W, 174W, 175W, 176W, 177W, 178W, 179W, 180W, 181W, 182W, 183W, 184W, 185W, 186W, 187W, 188W, 189W, 190W, 191W, 192W
Stable Isotopes
180W, 182W, 183W, 184W, 186W
Isotopic Abundances
180W0.12%
182W26.5%
183W14.31%
184W30.64%
186W28.43%


Notes on the properties of Tungsten:

Specific Heat: Value given for solid phase.

Up to date, curated data provided by
Mathematica's ElementData function from Wolfram Research, Inc.

The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!