Technical specifications of graphite electrodes
|
Feature Item |
Unit |
Nominal diameter (mm) |
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|
High power |
Near-ultra-high power |
Ultra-high power |
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|
75–550 |
350–500 |
350–700 |
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|
Resistivity |
Electrode |
micro-ohm-meter |
5.8 to 7.0 |
5.5–6.5 |
4.0–5.5 |
|
|
Connector |
3.5–5.0 |
3.2–4.5 |
2.8–4.0 |
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|
Flexural strength |
Electrode |
MPa |
10.0–13.0 |
10.0–15.0 |
10.0–15.0 |
|
|
Connector |
18.0–22.0 |
20.0–25.0 |
20.0–30.0 |
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|
Modulus of elasticity |
Electrode |
GPa |
10.0–12.0 |
10.0–14.0 |
12.0–16.0 |
|
|
Connector |
14.0–18.0 |
16.0–22.0 |
16.0–25.0 |
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|
Volumetric density |
Electrode |
g/cm³ |
1.62–1.70 |
1.65–1.72 |
1.66–1.75 |
|
|
Connector |
1.75–1.80 |
1.78–1.82 |
1.80–1.90 |
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|
Ash content |
% |
0.3 |
0.2 |
0.2 |
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|
Coefficient of Thermal Expansion C.T.E. 100–500℃ |
Electrode |
×10 -6 /℃ |
1.5–2.2 |
1.5–1.8 |
1.1–1.5 |
|
|
Connector |
1.0–1.4 |
1.0–1.4 |
0.5–1.2 |
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