Diameter tolerance:¡À0.05mm in ¦µ0.5-2.5mm.
¡À0.1mm in ¦µ2.5-15mm.
2. Length tolerance:¡À1mm in the length of the electrode.
3. Straightness:not larger than 0.5% length of electrode.
4. Quality of the surface:smooth ,clear ,no defect, no internal defect in the section.
| Designation |
W % |
Oxide |
Oxide % |
Impurity % |
Sign color |
| WP |
99.95 |
--------- |
--------- |
<0.05 |
green |
| WT4 |
the rest |
ThO2 |
0.35-0.55 |
<0.2 |
blue |
| WT10 |
the rest |
ThO2 |
0.8-1.2 |
<0.2 |
yellow |
| WT20 |
the rest |
ThO2 |
1.8-2.2 |
<0.2 |
red |
| WT30 |
the rest |
ThO2 |
2.8-3.2 |
<0.2 |
purple |
| WT40 |
the rest |
ThO2 |
3.8-4.2 |
<0.2 |
orange |
| WZ3 |
the rest |
ZrO2 |
0.15-0.5 |
<0.2 |
brown |
| WZ8 |
the rest |
ZrO2 |
0.7-0.9 |
<0.2 |
white |
| WL10 |
the rest |
La2O3 |
0.9-1.2 |
<0.2 |
black |
| WL15 |
the rest |
La2O3 |
1.3-1.7 |
<0.2 |
gold |
| WL20 |
the rest |
La2O3 |
1.8-2.2 |
<0.2 |
light blue |
| WC20 |
the rest |
CeO2 |
1.8-2.2 |
<0.2 |
grey |
| WY15 |
the rest |
CeO2 |
1.3-1.7 |
<0.2 |
sky blue |
Note:1.Special requirements to be agreed upon by the two sides.
2.Customer's drawings are available.
