Type | Trademark | Added impurity | Impurity quantity % | Other impurities% | Tungsten % | Electric discharged power | Color sign |
Lanthanated Tungsten Electrodes | WL10 | La203 | 0.8-1.2 | < 0.20 | The rest 99.95% | 2.6-2.7 | Black |
WL15 | 1.3-1.7 | 2.8-3.0 | Gold | ||||
WL20 | 1.8-2.2 | 2.8-3.2 | Sky Blue |
Trademark | Added impurity | Impurity quantity | Other impurities | Tungsten | color sign |
WT10 | Th02 | 0.9-1.2 | < 0.2 | The rest | yellow |
WT20 | Th02 | 1.8-2.2 | < 0.2 | The rest | Red |
WT30 | Th02 | 2.8-3.2 | < 0.2 | The rest | Purple |
WT40 | Th02 | 3.8-4.2 | < 0.2 | The rest | Orange |
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% |