RP 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.
- Product Details
Physical & Chemical Properties of RP Graphite Electrodes
Items |
Classification |
Unit |
Nominal Diameter (mm) |
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75-130 |
150-225 |
250-300 |
350-450 |
500-800 |
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Grade A |
Grade B |
Grade A |
Grade B |
Grade A |
Grade B |
Grade A |
Grade B |
Grade A |
Grade B |
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Resistivity |
Electrode |
μΩm |
8.5 |
10.0 |
9.0 |
10.5 |
9.0 |
10.5 |
9.0 |
10.5 |
9.0 |
10.5 |
Nipple |
8.0 |
8.0 |
8.0 |
8.0 |
8.0 |
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Bending Strength |
Electrode |
Mpa |
10.0 |
10.0 |
8.0 |
7.0 |
6.5 |
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Nipple |
15.0 |
15.0 |
15.0 |
15.0 |
15.0 |
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Young’s Modulus |
Electrode |
Gpa |
9.3 |
9.3 |
9.3 |
9.3 |
9.3 |
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Nipple |
14.0 |
14.0 |
14.0 |
14.0 |
14.0 |
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Bulk Density |
Electrode |
g/cm3 |
1.58 |
1.53 |
1.53 |
1.53 |
1.52 |
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Nipple |
1.70 |
1.70 |
1.70 |
1.70 |
1.70 |
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CTE (100℃-600℃) |
Electrode |
×10-6/℃ |
2.9 |
2.9 |
2.9 |
2.9 |
2.9 |
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Nipple |
2.7 |
2.7 |
2.8 |
2.8 |
2.8 |
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Ash Content |
|
% |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
Note: Ash Content is only for reference.
Recommended current load of RP Graphite Electrodes
Grade |
Nominal Dia. |
Allowable current A |
Current density A/cm2 |
RP electrode |
200mm |
500~6900 |
15~21 |
250mm |
7000~10000 |
14~20 |
|
300mm |
10000~13000 |
14~18 |
|
350mm |
13500~18000 |
14~18 |
|
400mm |
18000~23500 |
14~18 |
|
450mm |
22000~27000 |
13~17 |
|
500mm |
25000~32000 |
13~16 |
|
550mm |
28000~34000 |
12~14 |
|
600mm |
30000~36000 |
11~13 |
|
650mm |
32000~39000 |
10~12 |
|
700mm |
34000~42000 |
9~11 |
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