UHP500mm Graphite Electrode
The production process for UHP grade:
Needle coke and pitch are mixed and then molded. Heat treatment is then applied in the baking and graphitization process to form the finished product.
Physical & Chemical Properties of UHP Graphite Electrodes
|
Items
|
Classification
|
Unit
|
Nominal Diameter (mm)
|
|
250-400
|
450-500
|
550-650
|
700-800
|
|
Resistivity
|
Electrode
|
μΩm
≤
|
6.2
|
6.3
|
6.0
|
5.8
|
|
Nipple
|
5.3
|
5.3
|
4.5
|
4.3
|
|
Bending Strength
|
Electrode
|
Mpa
≥
|
10.5
|
10.5
|
10.0
|
10.0
|
|
Nipple
|
20.0
|
20.0
|
22.0
|
23.0
|
|
Young’s Modulus
|
Electrode
|
Gpa
≤
|
14.0
|
14.0
|
14.0
|
14.0
|
|
Nipple
|
20.0
|
20.0
|
22.0
|
22.0
|
|
Bulk Density
|
Electrode
|
g/cm3
≥
|
1.67
|
1.66
|
1.66
|
1.68
|
|
Nipple
|
1.74
|
1.75
|
1.78
|
1.78
|
|
CTE（100℃-600℃）
|
Electrode
|
×10-6/℃
≤
|
1.5
|
1.5
|
1.5
|
1.5
|
|
Nipple
|
1.4
|
1.4
|
1.3
|
1.3
|
|
Ash Content
|
Electrode
|
%
≤
|
0.5
|
0.5
|
0.5
|
0.5
|
|
Nipple
|
Note: Ash Content is only for reference.
