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Elmet Technologies

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Tungsten, W, (drawn wire)
Categories: Metal; Nonferrous Metal; Refractory Metal; Tungsten Alloy; Pure Element

Material Notes: Drawn wire applies only to tensile and hardness values; other property values are typical of tungsten.

Tungsten is a very dense, hard, temperature/corrosion-resistant metal. It is expensive so finds niche rather than large scale structural applications. Some example uses are rocket nozzles, nuclear and medical radiation shielding for x-ray and radiation therapy shields and industrial applications, aircraft and helicopter rotor balance weights, instrument balance weights, weights for sport equipment, tool damping cutter bars, and high voltage contacts.

Key Words: Wolfram, W
Vendors: Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com.

Elmet Technologies is a 100% US owned and operated, fully integrated manufacturer of Molybdenum, Tungsten and related alloys such as TZM, WHA & MoLa. At our 220,000 sqr/ft plant in Lewiston, Maine, Elmet manufactures W & Mo pure powders plus rod, wire, plate, sheet & foil in additional to offering fabrication and machining services. ITAR, ISO and AS9100 registered. www.elmettechnologies.com

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Physical PropertiesOriginal ValueComments
Density 19.3 g/cc
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 183.841995
Atomic Number 74
Thermal Neutron Cross Section 19.2 barns/atom
X-ray Absorption Edge 0.17837 ÅK
 1.02497 ÅLI
 1.07436 ÅLII
 1.21529 ÅLIII
Electrode Potential 4.5 V
Electronegativity 1.7Pauling
Ionic Radius 0.620 ÅCrystal Ionic Radius for Valence +6
 0.700 ÅCrystal Ionic Radius for Valence +4
Electrochemical Equivalent 3.43 g/A/h
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 444Converted from Vickers for 3000 kg load/10 mm ball Brinell test. Drawn and annealed.
Hardness, Knoop 505Estimated from Vickers.
Hardness, Rockwell A 74Converted from Vickers. Drawn and annealed.
Hardness, Rockwell C 47Converted from Vickers. Drawn and annealed.
Hardness, Vickers 480Drawn and annealed.
Tensile Strength, Yield 450 MPa
Modulus of Elasticity 400 GPa
Poissons Ratio 0.28
Shear Modulus 156 GPaCalculated
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000565 ohm-cm
Magnetic Susceptibility 3.3e-7cgs/g
Critical Magnetic Field Strength, Oersted 1.12 - 1.18
Critical Superconducting Temperature 0.0149 - 0.0159 K
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 184.2 J/g
CTE, linear 4.40 µm/m-°C
@Temperature 20.0 - 100 °C
Specific Heat Capacity 0.134 J/g-°C
Thermal Conductivity 163.3 W/m-K
Melting Point 3370 °C
Boiling Point 5555 °C
 
Optical PropertiesOriginal ValueComments
Emissivity (0-1) 0.15
@Temperature 100 °C
unoxidized, total
 
Component Elements PropertiesOriginal ValueComments
Tungsten, W 100 %
 
Descriptive Properties
CAS Number7440-33-7

References for this datasheet.

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