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Formula: W
Form: Wire
Material: Tungsten
CAS Number: 7440-33-7
Commodity: Metals
Purity:
99.95%
Diameter:
0.03mm
Coating:
Platinum Plated
Platinum Plated Tungsten Spooled Wire from Goodfellow is a versatile range of metal wires with a tungsten core and a thin platinum cladding. Available in 13 variations, these wires combine the high strength and hardness of tungsten with the excellent corrosion resistance of platinum. The tungsten provides mechanical integrity while the platinum protects the core from oxidation and enables use in corrosive environments. With their unique properties, Platinum Plated Tungsten Spooled Wires find applications in electrical contacts, thermocouples, and as filaments in lamps and electron tubes. The range of sizes allows selection for needs from delicate instrument wiring to robust heating elements.
Tolerances
Wire
| Diameter | ±10% | |
|---|---|---|
| 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 |
Other Customers Purchased
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Tungsten Rod Formula: W
Percentage Purity: 99.95%
Diameter: 6.35mm
Length: 1000mm
Production Method: Centreless Ground
CAS Number: 7440-33-7
UOM Code: 000-457-40
eachStarting at $240.70
Discounts applied for volume purchases -
Tungsten Powder Formula: W
Percentage Purity: 99.9%
Maximum Particle Size: 100µm
Weight: 50g
CAS Number: 7440-33-7
UOM Code: 033-713-52
eachStarting at $277.70
Discounts applied for volume purchases -
Zirconium Spooled Wire Formula: Zr
Percentage Purity: 99.2%
Product Shape: Spooled
Diameter: 0.28mm
Length: 10m
Temper: Annealed
Type: Hafnium > 0.2%
CAS Number: 7440-67-7
UOM Code: 007-857-52
eachStarting at $234.48
Discounts applied for volume purchases -
Tungsten Foil Formula: W
Percentage Purity: 99.95%
Thickness: 5mm
Length 1: 60mm
Length 2: 65mm
CAS Number: 7440-33-7
UOM Code: 011-242-88
eachStarting at $164.57
Discounts applied for volume purchases -
Yttrium Spooled Wire Formula: Y
Percentage Purity: 99.9%
Product Shape: Spooled
Diameter: 0.5mm
Length: 0.1m
CAS Number: 7440-65-5
UOM Code: 027-639-63
eachStarting at $622.81
Discounts applied for volume purchases -
Zinc Spooled Wire Formula: Zn
Percentage Purity: 99%
Product Shape: Spooled
Diameter: 0.025mm
Length: 1m
Temper: As Drawn
CAS Number: 7440-66-6
UOM Code: 008-440-73
eachStarting at $216.73
Discounts applied for volume purchases
