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Formula: W

Form: Insulated Wire

Material: Tungsten

CAS Number: 7440-33-7

Commodity: Metals

Purity: 99.9%

Conductor Diameter: 0.075mm

Insulation: PTFE (Polytetrafluoroethylene)

Insulation Thickness: 0.02mm

PTFE-Insulated Tungsten Wire

PTFE-Insulated Tungsten Wire combines tungsten’s exceptional tensile strength, high melting point, and stability under extreme thermal loads with PTFE’s dielectric integrity and chemical resistance. The PTFE insulation shields the conductor from corrosive environments while enabling reliable performance in high-voltage and high-temperature systems. Industries employ this wire in aerospace propulsion monitoring, furnace instrumentation, and high-energy physics equipment. Specific applications include lead wires for thermionic emission devices, high-temperature sensor cables in jet engines, and insulated conductors in particle accelerator experiments. In research, it is used to evaluate tungsten’s electrical performance under rapid heating, test insulation breakdown resistance, and design robust conductors for extreme laboratory environments. The synergy of tungsten’s mechanical endurance with PTFE’s protection ensures long-term functionality where both strength and insulation integrity are paramount.

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Tolerance

Properties

Reference & Citations

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Tolerances

Insulated Wire

Conductor Diameter		±10%
Insulation Thickness		Nominal
Length		+5% / -1%

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