Molybdenum rods and Tungsten rods
Product Description
Applications:
- For producing electric light source parts and electric vaccum components
- For producing heating elements and refractory parts in high temperature furnaces
- For producing heating elements used in vaccum metalizing or plating
| Appearance: W-wire is regular black covered with graphite. After graphite is removed it is metallic luster. |
| Chemical Composition: |
| Designation |
Tungsten Content |
Impurity Elements Content |
| Total |
Each |
| 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. |
|
| Diameter tolerance(%): |
| Diameter (μm) |
Weight (mg/200mm) |
Weight(mg/200mm) Tolerance(%) |
Diameter Tolerance(%) |
| Grade 0 |
Grade 1 |
Grade 2 |
Grade 0 |
Grade 1 |
Grade 2 |
| 5≤d≤12 |
0.075~0.44 |
－ |
±4 |
±5 |
－ |
－ |
－ |
| 12<d≤18 |
>0.44~0.98 |
－ |
±3 |
±4 |
－ |
－ |
－ |
| 18<d≤40 |
>0.98~4.85 |
±2 |
±2.5 |
±3 |
－ |
－ |
－ |
| 40<d≤80 |
>4.85~19.39 |
±1.5 |
±2.0 |
±2.5 |
－ |
－ |
－ |
| 80<d≤300 |
>19.39~272.71 |
±1.0 |
±1.5 |
±2.0 |
－ |
－ |
－ |
| 300<d≤350 |
>272.71~371.79 |
－ |
±1.0 |
±1.5 |
－ |
－ |
－ |
| 350<d≤500 |
－ |
－ |
±1.5 |
±2.0 |
±2.5 |
| 500<d≤1800 |
－ |
－ |
±1.0 |
±1.5 |
±2.0 |
|
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