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Item | Unit | Isostatic graphite |
grain size | μm | 5-22 |
Bulk density | g/cm3 | 1.8-1.85 |
Specific resistance | μΩ.m | 10-15 |
Bending strength | MPa | ≥40 |
Compressive strength | MPa | ≥70 |
C.T.E.(100-600) °C | 10-6/°C | 3.2-5.2 |
Modulus of elasticity | GPa | 9.5-12.5 |
Item | Unit | Guarantee value | Typical value | Guarantee value | Typical value |
Max grain size | mm | 0.8 | 0.8 | 0.8 | 0.8 |
Bulk density | g/cm3 | ≥1.70 | 1.73 | ≥1.73 | 1.76 |
Specific resistance | μΩ.m | ≤8.5 | 7.5 | ≤8.0 | 7 |
Bending strength | MPa | ≥10.0 | 11 | ≥12.0 | 12.5 |
Compressive strength | MPa | ≥24.0 | 27 | ≥31.0 | 34 |
Thermal Condcutivity | W/(m.k) | ≥120 | 150 | ≥130 | 160 |
C.T.E.(100-600) °C | 10-6/°C | ≤2.5 | 2.2 | ≤2.5 | 2.1 |
Ash content | % | ≤0.3 | 0.09 | ≤0.3 | 0.09 |
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 |