Physical and Chemical Properties of Tungsten, W, (drawn wire)
Physical and Chemical Properties of Tungsten, W, (drawn wire)
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.
|
Physical Properties |
Metric |
English |
Comments |
|
Density |
19.3 g/cc |
0.697 lb/in³ |
|
|
|
|
Chemical Properties |
Metric |
English |
Comments |
|
Atomic Number |
74 |
74 |
|
|
Thermal Neutron Cross Section |
19.2 barns/atom |
19.2 barns/atom |
|
|
X-ray Absorption Edge |
0.17837 Å |
0.17837 Å |
K |
|
|
1.02497 Å |
1.02497 Å |
LI |
|
|
1.07436 Å |
1.07436 Å |
LII |
|
|
1.21529 Å |
1.21529 Å |
LIII |
|
Electrode Potential |
4.50 V |
4.50 V |
|
|
Electronegativity |
1.70 |
1.70 |
Pauling |
|
Ionic Radius |
0.620 Å |
0.620 Å |
Crystal Ionic Radius for Valence +6 |
|
|
0.700 Å |
0.700 Å |
Crystal Ionic Radius for Valence +4 |
|
Electrochemical Equivalent |
3.43 g/A/h |
3.43 g/A/h |
|
|
|
|
Mechanical Properties |
Metric |
English |
Comments |
|
Hardness, Brinell |
444 |
444 |
Converted from Vickers for 3000 kg load/10 mm ball Brinell test. Drawn and annealed. |
|
Hardness, Knoop |
505 |
505 |
Estimated from Vickers. |
|
Hardness, Rockwell A |
74 |
74 |
Converted from Vickers. Drawn and annealed. |
|
Hardness, Rockwell C |
47 |
47 |
Converted from Vickers. Drawn and annealed. |
|
Hardness, Vickers |
480 |
480 |
Drawn and annealed. |
|
Tensile Strength, Yield |
450 MPa |
65300 psi |
|
|
Modulus of Elasticity |
400 GPa |
58000 ksi |
|
|
Poissons Ratio |
0.280 |
0.280 |
|
|
Shear Modulus |
156 GPa |
22600 ksi |
Calculated |
|
|
|
Electrical Properties |
Metric |
English |
Comments |
|
Electrical Resistivity |
0.00000565 ohm-cm |
0.00000565 ohm-cm |
|
|
Magnetic Susceptibility |
3.30e-7 |
3.30e-7 |
cgs/g |
|
Critical Magnetic Field Strength, Oersted |
1.12 - 1.18 |
1.12 - 1.18 |
|
|
Critical Superconducting Temperature |
0.0149 - 0.0159 K |
0.0149 - 0.0159 K |
|
|
|
|
Thermal Properties |
Metric |
English |
Comments |
|
Heat of Fusion |
184.2 J/g |
79.24 BTU/lb |
|
|
CTE, linear |
4.40 µm/m-°C
@Temperature 20.0 - 100 °C |
2.44 µin/in-°F
@Temperature 68.0 - 212 °F |
|
|
Specific Heat Capacity |
0.134 J/g-°C |
0.0320 BTU/lb-°F |
|
|
Thermal Conductivity |
163.3 W/m-K |
1133 BTU-in/hr-ft²-°F |
|
|
Melting Point |
3370 °C |
6100 °F |
|
|
|
|
Optical Properties |
Metric |
English |
Comments |
|
Emissivity (0-1) |
0.150 |
0.150 |
1000°C unoxidized, total |
|
|
|
Component Elements Properties |
Metric |
English |
Comments |
|
Tungsten, W |
100 % |
100 % |
|
|
|
|
Descriptive Properties |
|
CAS Number |
7440-33-7 |
|
|
|
If you need any more details of the above news and/or products, please visit Chinatungsten Online, or contact us directly.
Disclaimer: The article is only reflecting the opinions of the author. We have no responsibility to prove the originality and authenticity of the content, words and/or pictures. You readers should just take it as reference and check the details by yourselves. And the content is not a suggestion for investment decision. The investor takes his or her own risks if he or she operates accordingly. If you have any dissent about the contents above, please contact the relevant author, or the webmaster. We will try our best to assist the dealing of the related issues. Thanks for your visit and cooperation.
|
