Tungsten Bar
| Property | Specification |
|---|---|
| Material | Pure Tungsten |
| Specification | (Ф2.0-Ф100) mm × L (50–2000) mm |
| Surface | Black, ground or machined |
| Color | Sintered, sandblasting or polishing |
| Purity | 99.95% |
| Grade | W-1 |
| Density | 19.2 g/cm³ |
Application:
Ion implantation parts, electric light source parts, electric vacuum components, heating elements and refractory parts in high temperature furnaces, glass and glass fiber industry, electrodes in the field of rare earth metal industry etc.
Properties
Main Characteristics:
1. High melting point (3410°C)
2. Low thermal expansion
3. High electrical resistance
4. Low vapor pressure
5. Good thermal conductivity
6. High density
Tungsten Rod Availability
Tungsten rod is manufactured as random length pieces or cut to customers’ desired lengths. Standard diameter and length tolerances are listed as follows. Other, closer tolerances can be quoted on request. In addition, there are three different surface processes or finishes which are provided, depending upon the desired end use.
Tungsten rod Surface Finish
Black – Surface is “as swaged” or “as drawn”; retaining a coating of processing lubricants and oxides.
Cleaned – Surface is chemically cleaned to remove all lubricants and oxides.
Ground – Surface is centerless ground to remove all coating and to achieve precise diameter control.
Tungsten content: 99.95%
Size: 2.0mm-100mm diameter Length: 50-2000mm
Type and Size:
| Type | Swaged Rods | Straightened Rods after Drawn | Ground Rods Available |
|---|---|---|---|
| Size | Ф2.4~95 mm | Ф0.8~3.2 mm | - |
Chemical Composition:
| Designation | Tungsten Content | Total Impurities | Each Impurity |
|---|---|---|---|
| WAL1, WAL2 | ≥99.95% | ≤0.05% | ≤0.01% |
| W1 | ≥99.95% | ≤0.05% | ≤0.01% |
| W2 | ≥99.92% | ≤0.08% | ≤0.01% |
Note: Potassium is not counted in impurities content.