Trademark | Added impurity | Impurity quantity | Other impurities | Tungsten | Electric discharged power | color sign |
WT20 | ThO2 | 1.7-2.2 | < 0.20 | The rest | 2.0-3.0 | Red |
WP | --- | --- | < 0.20 | The rest | 4.5 | Green |
WL10 | La2O3 | 0.8-1.2 | < 0.20 | The rest | 2.6-2.7 | Black |
WL15 | La2O3 | 1.3-1.7 | < 0.20 | The rest | 2.8-3.0 | Goldyellow |
WL20 | La2O3 | 1.8-2.2 | < 0.20 | The rest | 2.8-3.2 | Skyblue |
WC20 | CeO2 | 1.80-2.20 | < 0.20 | The rest | 2.7-2.8 | Grey |
WY20 | YO2 | 1.8-2.2 | < 0.20 | The rest | 2.0-3.9 | Blue |
WZ8 | ZrO2 | 0.7-0.9 | < 0.20 | The rest | 2.5-3.0 | White |
Tungsten Content | Type | Diameter (mm) | Dia.Tolerance (mm) | Length (mm) | L tolerance (mm) |
99.95% | Sintering rod | 40-100 | ±3 | 500max | ±5 |
99.95% | Forged rod | 20-80 | ±2 | 800max | ±5 |
99.95% | Ground rod | 2-60 | ±0.1 | 600max | ±1 |
Content of Tungsten | Content of all other elements | Content of each element |
≥99.95% | ≤0.05% | ≤0.01% |