Features
- Fine grain
- Homogeneous structure
- High density
- Excellent thermal conductivity
- High mechanical strength
- Proper electrical conductivity
- Minimum wettability to molten metals
- Hard surface and good flexural strenght
- Resistance to chemical erosion and thermal shock.
Physical and chemical index
|
|
Fine-grain Specialty Graphite FXG-1 |
Fine-grain Specialty Graphite FXG-2 |
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 |
Item |
Unit |
Guarantee value |
Typical value |
Guarantee value |
Typical value |
Max grain size |
mm |
2 |
2 |
2 |
2 |
Bulk density |
g/cm3 |
≥1.58 |
1.6 |
≥1.70 |
1.75 |
Specific resistance |
μΩ.m |
≤11.5 |
10.5 |
≤8.5 |
7.5 |
Bending strength |
MPa |
≥6.0 |
6.5 |
≥9.0 |
9.5 |
Compressive strength |
MPa |
≥18.0 |
18.5 |
≥30.0 |
31 |
Modulus of elasticity |
GPa |
≤9.3 |
7.5 |
≤12.0 |
9.5 |
C.T.E.(100-600) °C |
10-6/°C |
≤2.5 |
2.4 |
≤2.5 |
2.3 |
Ash content |
% |
≤0.3 |
0.09 |
≤0.3 |
0.09 |
High pure graphite
|
|
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 |
Isostatic graphite
Item |
Unit |
Isostatic graphite |
grain size |
μm |
5-22 |
Bulk density |
g/cm3 |
1.75-1.85 |
Specific resistance |
μΩ.m |
10-15 |
Bending strength |
MPa |
≥40 |
Compressive strength |
MPa |
≥70 |
Shore hardness |
|
≥5 |
C.T.E.(100-600) °C |
10-6/°C |
3.2-5.2 |
Modulus of elasticity |
GPa |
9.5-12.5 |