HP Graphite Electrode
HP Graphite Electrode
Raw materials 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 HP Graphite Electrodes
|
Items |
Classification |
Unit |
Nominal Diameter (mm) |
||
|
HP Graphite Electrode |
|||||
|
200-400 |
450-500 |
550-600 |
|||
|
Resistivity |
Electrode |
μΩm ≤ |
7.0 |
7.5 |
7.5 |
|
Nipple |
6.3 |
6.3 |
6.3 |
||
|
Bending Strength |
Electrode |
Mpa ≥ |
10.5 |
10.0 |
8.5 |
|
Nipple |
17.0 |
17.0 |
17.0 |
||
|
Young’s Modulus |
Electrode |
Gpa ≤ |
14.0 |
14.0 |
14.0 |
|
Nipple |
16.0 |
16.0 |
16.0 |
||
|
Bulk Density |
Electrode |
g/cm3 ≥ |
1.60 |
1.60 |
1.60 |
|
Nipple |
1.72 |
1.72 |
1.72 |
||
|
CTE（100℃-600℃） |
Electrode |
×10-6/℃ ≤ |
2.4 |
2.4 |
2.4 |
|
Nipple |
2.2 |
2.2 |
2.2 |
||
|
Ash Content |
Electrode |
% ≤ |
0.5 |
0.5 |
0.5 |
|
Nipple |
|||||
Note: Ash Content is only for reference.
Recommended current load of HP Graphite Electrodes
|
Grade |
Nominal Dia. |
Allowable current A |
Current density A/cm2 |
|
HP electrode |
200mm |
5500～9000 |
18～25 |
|
250mm |
8000～13000 |
18～25 |
|
|
300mm |
13000～17400 |
17～24 |
|
|
350mm |
17400～24000 |
17～24 |
|
|
400mm |
21000～31000 |
16～24 |
|
|
450mm |
25000～40000 |
15～24 |
|
|
500mm |
30000～48000 |
15～24 |
|
|
550mm |
34000～53000 |
14～22 |
|
|
600mm |
38000～58000 |
13～21 |
