tungsten electrode composition | color mark | ||||||||
Grade | Dioxide | Dioxide in % | Impurities % | tungsten % | |||||
WT10 | ThO2 | 0.80-1.20 | ≤0.02 | Remainder | Yellow | ||||
WT20 | ThO2 | 1.70-2.20 | ≤0.02 | Remainder | Red | ||||
WT30 | ThO2 | 2.80-3.20 | ≤0.02 | Remainder | Purple | ||||
WT40 | ThO2 | 3.80-4.20 | ≤0.02 | Remainder | Orange | ||||
WC20 | CeO2 | 1.80-2.20 | ≤0.02 | Remainder | Grey | ||||
WL10 | La2o3 | 0.90-1.20 | ≤0.02 | Remainder | Black | ||||
WL15 | La2o3 | 1.40-1.60 | ≤0.02 | Remainder | Gold | ||||
WL20 | La2o3 | 1.90-2.10 | ≤0.02 | Remainder | Blue | ||||
WZr3 | ZrO2 | 0.15-0.50 | ≤0.02 | Remainder | Brown | ||||
WZr8 | ZrO2 | 0.70-0.90 | ≤0.02 | Remainder | White | ||||
WP | ≤0.02 | 99.8 | Green | ||||||
WY | YO2 | 1.80-2.20 | ≤0.02 | Remainder | Sky blue | ||||
WS2 | YO2 | 1.80-2.20 | ≤0.02 | Remainder | Turquoise |
mm | inch | mm | mm | mm |
1 | 1/25 | (+/-)0.01 | 50,75,150,175 | (+/-)1.0 |
1.2 | 6/125 | (+/-)0.01 | 50,75,150,175 | (+/-)1.0 |
1.6 | 1/16 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
2 | 2/25 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
2.4 | 3/32 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
3 | 3/25 | (+/-)0.03 | 50,75,150,175 | (+/-)1.0 |
3.2 | 1/8 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
4 | 5/32 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
4.8 | 3/16 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
5 | 1/5 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
6 | 15/64 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
6.4 | 1/4 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
8 | 5/16 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
10 | 2/5 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |