Luoyang Hypersolid Metal Tech Co., Ltd
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Low Thermal Expansion Tungsten Flat Bar Heat Resistance
Main Characteristics:
High melting point (3410°C)
Low thermal expansion
High electrical resistance
Low vapor pressure
Good thermal conductivity
High density
Details
1. Material: tungsten
2. Purity:>=99.95%
3. Dia: 0.8mm Min
4. Surface: black, sintering, polishing,machining
Chemical Composition
| Element | Mo | Mg | Fe | C | Al | N | Si | Ca | Ni | C | |
| Concentration(%) | 0.01 | 0.003 | 0.005 | 0.005 | 0.002 | 0.003 | 0.005 | 0.005 | 0.003 | 0.008 | |
| Purity(Metallic Base) W≥99.95% | |||||||||||
Parameters
wholesale customized 99.95 % pure tungsten bars
| Machining | Diameter | Diameter tolerance % | Max length, mm |
|
Forging, Rotary swaging |
1.6-20 | ±0.1 | 2000 |
| 20-30 | ±0.1 | 1200 | |
| 30-60 | ±0.1 | 1000 | |
| 60-70 | ±0.2 | 800 |
Note: Your special request for wholesale customized 99.95 % pure tungsten bars will be available.
|
Atomic number |
74 |
|
CAS number |
7440-33-7 |
|
Atomic mass |
183.84 [g/mol] |
|
Melting point |
3420 °C |
|
Boiling point |
5555 °C |
|
Density at 20 °C |
19.25 [g/cm3] |
|
Crystal structure |
Body-centered cubic |
|
Coefficient of linear thermal expansion at 20 °C |
4.410-6[m/(mK)] |
|
Thermal conductivity at 20 °C |
164 [W/(mK)] |
|
Specific heat at 20 °C |
0.13 [J/(gK)] |
|
Electrical conductivity at 20 °C |
18.2106[S/m] |
|
Specific electrical resistance at 20 °C |
0.055 [(mm2)/m] |
Applications
Parts of the electric light source and electron tube
Heat elements of high-temperature furnace
Structures of high-temperature furnace
Contact of electrical appliance
Rare earth industry
Vacuum coating industry
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