Tungsten Rod

Formula: W

Form: Rod

Material: Tungsten

CAS Number: 7440-33-7

Commodity: Metals

Purity: 99.95%

Our Tungsten Rods are available in 167 different variations and offer many options for customization. They’re known for their hardness, density and high melting point, making them suitable for applications like counterweights, radiation shielding and high-temperature electrical contacts. The unique properties of tungsten allow these rods to be precision machined into specialty rods and fasteners meeting exacting specifications across science, engineering and industry.

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Technical Data Sheet Tolerance Properties

each

Tolerances

Rod

Diameter	=<10mm	±10%
Diameter	>10mm	±5%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	74
Crystal structure	Body centred cubic
Electronic structure	Xe 4f¹⁴ 5d⁴ 6s²
Valences shown	2,3,4,5,6
Atomic weight( amu )	183.85
Thermal neutron absorption cross-section( Barns )	18.5
Photo-electric work function( eV )	4.55
Natural isotope distribution( Mass No./% )	183/ 14.3
Natural isotope distribution( Mass No./% )	182/ 26.3
Natural isotope distribution( Mass No./% )	186/ 28.6
Natural isotope distribution( Mass No./% )	180/ 0.1
Natural isotope distribution( Mass No./% )	184/ 30.7
Atomic radius - Goldschmidt( nm )	0.141
Ionisation potential( No./eV )	1/ 7.98
Ionisation potential( No./eV )	2/ 17.7

Mechanical Properties

Element	Value
Material condition	Soft
Material condition	Hard
Poisson's ratio	0.28
Poisson's ratio	0.28
Bulk modulus( GPa )	311
Bulk modulus( GPa )	311
Tensile modulus( GPa )	411
Tensile modulus( GPa )	411
Hardness - Vickers( kgf mm⁻² )	360
Hardness - Vickers( kgf mm⁻² )	500
Tensile strength( MPa )	550-620
Tensile strength( MPa )	1920
Yield strength( MPa )	550

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	5.4@20@20°C
Superconductivity critical temperature( K )	0.0154
Temperature coefficient( K⁻¹ )	0.0048@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	1.12

Physical Properties

Element	Value
Boiling point( C )	5660
Density( gcm⁻³ )	19.3@20°C

Thermal Properties

Element	Value
Melting point( C )	3410
Latent heat of evaporation( J g⁻¹ )	4009
Latent heat of fusion( J g⁻¹ )	192
Specific heat( J K⁻¹ kg⁻¹ )	133@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	173@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	4.5@0-100°C