Special Graphite

Keeping abreast of times, business markets demanded a finer grade carbon of more stable properties. Ahead of the rest of the industry, Toyo Tanso developed an "isotropic graphite" which is pressed by Cold Isostatic Press, having superfine isotropic microstructure. We have established world level technology that enables this isotropic graphite to fully exhibit its superior properties in the fields of nuclear power which requires high reliability, electrical discharge processing where accuracy is everything, and semiconductors which supports today's hi-tech wave.

photo of Special Graphite

Property Data

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Grade Bulk Density Hardness Electrical Resistivity Flexural Strength Compressive Strength Tensile Strength Young's Modulus Coefficient of Thermal Expansion Thermal Conductivity Standard Size
Mg/m3 HSD μΩ・m MPa MPa MPa GPa 10-6/K W/(m・K) (mm)
IG-11 1.77 51 11.0 39 78 25 9.8 4.5 120 305X620X1000
Φ585X1050
IG-12 1.78 55 12.5 39 88 28 10.8 4.7 100 305X620X1000
Φ585X1050
IG-15 1.90 60 9.5 54 103 29 11.8 4.8 140 230X620X1000
IG-19 1.75 60 17.0 38 88 25 9.5 4.6 80 Φ400X900
305X620X1000
IG-43 1.82 55 9.2 54 90 37 10.8 4.8 140 300X540X850 
IG-45 1.88 55 9.0 60 110 40 12.0 4.9 140 300X540X850
IG-56 1.77 57 12.2 43 88 27 10.3 4.7 100 1050X1050X450
Φ740X730
IG-70 1.83 58 10.0 47 103 31 11.8 4.6 130 305X620X1000
Φ460X1050
ISEM-1 1.68 45 13.5 36 69 20 8.8 4.2 90 305X620X1000
ISEM-2 1.78 55 11.0 41 83 25 9.8 4.6 120 305X620X1000 
ISEM-3 1.85 60 10.0 49 103 29 11.8 5.0 130 305X620X1000 
ISEM-8 1.78 63 13.4 52 106 34 10.1 5.6 90 305X620X1050 
ISO-63 1.78 76 15.0 65 135 46 12.0 5.6 70 230X540X1000
ISO-68 1.82 80 15.5 76 172 54 13.2 5.6 70 230X540X1000
TTK-4 1.78 72 14.0 73 135 49 10.9 5.0 90 210X510X950
TTK-5 1.78 80 15.5 80 150 53 11.6 5.7 80 210X510X950
TTK-8 1.77 78 15.0 80 155 55 12.0 5.3 80 100X400X700
TTK-9 1.77 90 18.0 92 180 67 13.0 5.8 70 100X400X700
SIC-6 1.85 60 10.0 49 103 29 11.8 5.0 130 305X620X1000 
SIC-12 1.77 65 14.1 47 93 29 10.8 5.0 80 305X620X1000 
HPG-51 1.78 73 14.3 75 140 50 11.0 5.1 90 210X510X950 
HPG-53 1.78 81 15.7 80 156 55 11.8 5.8 80 210X510X950 
HPG-59 1.91 88 13.5 100 210 74 12.7 5.7 95 100X500X950 
HPG-81 1.77 80 15.1 83 161 58 12.2 5.2 80 100X400X700 
HPG-83 1.77 92 18.2 96 187 70 13.3 5.9 70 100X400X700 

1. The figures above are typical values, and are not guaranteed.
2. The measurement temperature range for the coefficient of thermal expansion is 350 to 450℃.
3. Unit conversion: μΩ・m=μΩ・㎝×0.01 MPa=kgf/cm2×0.098 GPa=kgf/mm2×0.0098 W/(m・K)=kcal/h・m℃×1.16
4. There are other product sizes in addition to those described above. Contact Toyo Tanso for details.