Tungsten

Tungsten

Tungsten (W) is a hard, dense, and extremely high-melting point metal renowned for its strength and durability at elevated temperatures. With a melting point of 3422 °C, it is used extensively in high-temperature and high-wear environments. Tungsten exhibits excellent thermal conductivity, low vapor pressure, and high density, making it essential in applications requiring dimensional stability and heat resistance. It is widely utilized in electronics, aerospace, defense, and scientific equipment.

Goodfellow’s extensive tungsten (W) offerings, including Tungsten Sputtering Targets and Grade 1 Tungsten Spooled Wires, are critical for laboratories and industries requiring high-density, heat-resistant, and corrosion-resistant materials. With its exceptional thermal conductivity and electrical conductivity, tungsten (also known as wolfram) is indispensable in fields such as electronics, aerospace, and energy. From thin-film deposition in semiconductor research to precision components like tungsten nuts and bolts for extreme environments, our products drive groundbreaking innovations. Ideal for high-temperature applications and advanced coatings, Goodfellow’s tungsten solutions are at the forefront of material science, nanotechnology, and industrial manufacturing. Trusted by top R&D laboratories worldwide, these high-performance tungsten materials support next-generation advancements in precision manufacturing and scientific research.


General Properties

PropertyValue
Atomic Number74
Density19.25 g/cm³
Melting Point3422 °C
Boiling Point5555 °C
Thermal Conductivity173 W/m·K
Electrical Resistivity52.8 nΩ·m
Crystal StructureBody-Centered Cubic (BCC)

Mechanical Properties

PropertyValue
Tensile Strength550–1000 MPa
Yield Strength750 MPa (typical)
Young’s Modulus411 GPa
HardnessMohs 7.5; Vickers ~350
Elongation at Break10–30%
Poisson’s Ratio0.28

Chemical Properties

PropertyValue
Corrosion ResistanceExcellent in most acids; forms protective oxide
ReactivityStable at room temperature, oxidizes at high heat
Oxidation States+6 (common), +4, +5
Surface OxideTungsten trioxide (WO₃)
IdentifierValue
SymbolW
Atomic Number74
CAS Number7440-33-7
UN NumberUN3089 (powder)
EINECS Number231-143-9
IsotopeTypeNotes
W-182Stable26.5% natural abundance
W-183Stable14.3%
W-184Stable30.6%
W-186Stable28.4%

Scientific Applications

Use CaseDescription
X-ray TargetsUsed in medical and scientific imaging equipment
FilamentsElectron microscope and mass spectrometer components
Thermal AnalysisCrucibles and holders for DTA and TGA
Fusion ResearchPlasma-facing materials in fusion reactors
Field EmissionTip materials for electron emitters

Industrial Applications

Use CaseDescription
LightingFilaments in incandescent and halogen lamps
Welding ElectrodesTIG welding uses Tungsten tips
DefenseKinetic energy penetrators and projectiles
ToolingAlloyed in carbides for cutting and drilling tools
AerospaceHigh-temperature shielding and ballast components
PropertyPure TungstenGrade 1 Tungsten
Purity≥99.95%≥99.9%
Density19.25 g/cm³19.1–19.3 g/cm³
Grain SizeFine (<10 μm)Controlled for strength
ApplicationResearch, sputtering targetsIndustrial, structural uses
StandardsASTM F288ASTM B760
Synonym
Wolfram
W
Tungsten Metal