Tungsten per ASTM F288

Tungsten is a very high density refractory metal that is extremely resistant to corrosion. Tungsten wire has high temperature strength and good electrical resistance. It is often used in medical applications as well as used in heating elements.

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Short Description

What is Tungsten?

Tungsten is a very high density refractory metal that is very resistant to corrosion. Tungsten has the highest melting point and highest tensile strength of any element, with extremely low vapor pressure even at high temperatures. Tungsten wire is used as filaments for lighting, electron tubes, electrodes, high-temperature furnace parts, probe pins, Tungsten (W) offers exceptionally high strength and good electrical resistivity at very high temperatures.

Tungsten is ideal for many applications, specifically medical, but it's also commonly used in electrical applications as well such as making electron emitters. The tensile strength of Tungsten wire is extremely high and usually increases as the gauge (diameter) of the wire get smaller. Unalloyed Tungsten is often regarded as being very difficult to machine and fabricate. Ulbrich can provide this material down to be .0005" and with tensile strength over 400 KSI. Due to its' high temperature strength, tungsten can be used in many heating elements.

Tungsten Wire Applications

  • Medical Braid Wire
  • Medical Wire reinforcement
  • Medical Devices
  • Resistance Cable in Heaters
  • Heat shields and bodies
  • Electrical Contacts
  • Electron Emitters
  • Electric Vacuum Components


What is the chemical composition of Tungsten Wire?

ElementMinMax
Tungsten (W)
99.95
100
Potassium (K)
0
0.20
Sodium (Na)
00.20
Silicon (Si)
00.40
Chromium (Cr)
0
0.20
Nickel (Ni)
0
0.30
Molybdenum (Mo)
0
0.50
Copper (Cu)
0
0.10
Carbon (C)
0
0.50
Aluminum (Al)
0
0.25
Iron (Fe)
0
0.30


Product Forms

  • Tungsten Round Wire
  • Gold Plated Tungsten Wire


Mechanical Properties of Tungsten Wire

Hardness Properties of Tungsten

Mechanical PropertiesMetricImperial
Hardness, Brinell 294294
Hardness, Knoop 318318
Hardness, Rockwell A 6666
Hardness, Rockwell C 3131
Hardness, Vickers 310310

Tensile Properties of Tungsten

Mechanical PropertiesMetricImperial
Tensile Strength 172 MPa
@Temperature 1650 °C
25000 psi
@Temperature 3000 °F
Tensile Strength, Ultimate 980 MPa142000 psi
Tensile Strength, Yield 750 MPa
@Strain 0.200 %
109000 psi
@Strain 0.200 %
Rupture Strength 47.0 MPa
@Temperature 1650 °C,
6820 psi
@Temperature 3000 °F,
Modulus of Elasticity 400 GPa58000 ksi
300 GPa
@Temperature 1800 °C
43500 ksi
@Temperature 3270 °F
350 GPa
@Temperature 1200 °C
50800 ksi
@Temperature 2190 °F
370 GPa
@Temperature 800 °C
53700 ksi
@Temperature 1470 °F
Shear Modulus 156 GPa22600 ksi
Shear Strength 400 MPa58000 psi


FINISHES FOR TUNGSTEN ROUND WIRE

#6

Standard. Electro-polish

#2

Electro-chemically cleaned

Black

This finish is left as drawn

Please Contact a Specialist to learn about more finishes Ulbrich can provide on this alloy.

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