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high pure graphite | ||||||
Item | Unit | baked twice | baked three time | baked four times | ||
impregnated once | impregnated twice | Impregnated three times | ||||
grain size | mm | ≤325mesh | ≤325mesh | ≤325mesh | ||
Bulk density | g/cm3 | ≥1.68 | ≥1.78 | ≥1.85 | ||
Specific resistance | μΩ.m | ≤14 | ≤14 | ≤13 | ||
Bending strength | MPa | ≥25 | ≥40 | ≥45 | ||
Compressive strength | MPa | ≥50 | ≥60 | ≥65 | ||
Ash content | % | ≤0.15 | ≤0.1 | ≤0.05 |
Item | Unit | Domestic material | Import material |
Bulk density | Bulk density | 1.8-1.85 | 1.92 |
Bulk density | μΩ.m | ≥40 | 63.7 |
Compressive strength | MPa | ≥85 | |
Thermal conductivity | W/(m.k) | 128 | |
Ash content | % | ≤0.03 | |
C.T.E.(100-600) °C | 10-6/°C | 4.0-5.2 | 5.5 |
Shore hardness | ≥65 | 68 |