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Name | WL20 Tungsten Electrode |
Item | WP, WT20,WC20, WZr3, WZr8, WL10, WL15, WL20,WS2 |
Type | Thoriated tungsten, ceriated tungsten, lanthanated tungsten, zirconiated |
tungsten pure tungsten. | |
Diameter | 1.0-12mm |
Color | Green/Yellow/Red/ Gray/Black/Gold/Blue/White/Brown |
Length | 50.00mm, 75.00mm, 150.00mm, 175.00mm |
surface | polish annealed, or ground annealed |








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 | ||||
Diameter | Diameter tolerance | Length | Length tolerance | ||
mm | inch | mm | mm | mm | |
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 | |



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