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Grade Table
Grade Bulk Density Hardness
(shore)		 Resistivity
(μ Ω ㎝)
 Flexural Strength
(kg/㎠) 		Compressive Strength
(kg/㎠)
DI-10
DI-11
DI-20
DI-21
DI-22
DI-23
DI-30
DI-31
DI-40
DI-41
DI-42		 1.75
1.80
1.77
1.77
1.85
1.90
1.75
1.85
1.83
1.85
1.84		 53
65
54
60
58
90
55
70
68
80
76		 1400
1400
1100
1200
1000
1500
1250
1500
1250
1450
1600		 6300
6000
4000
4700
5000
9500
6500
7000
6500
10000 
7000		 1000
1100
8000
8800
1050
1850
1000
1400

DP-110
DP-200
DP-210		 1.90
1.77
1.77		 85
54
60		 1700
1100
1200		 1000
4000
4700		 1800
8000
8800
DE-1
DE-2
DE-3		 1.75
1.82
1.75

35		 2000
1200
400
450
250		 8000
1050
DMI-10
DMI-11
DMI-40
DMI-41
DMI-20
DMI-21		 1.80
1.85
1.80
1.70
1.80
1.78		 950
850
100
900
800
740		  

750
630

 2870
2100
2600
2100
2050
1900
DM-50
DM-51		 1.67
1.70
 65
70		   500
500		 1400
1500
SiC-10 1.90   600 350 840
DPAN-10 1.40     800 1530

Grade Tensile Strength
(kg/㎠) 		Modulus of
Elasticity
(kg/㎠) 		Coefficient of
Thermal
Expansion
(10-6/˚C)
 Thermal
conductivity
(kcal/m.hr.˚C)		 Thermal Resistivity
(in Air ˚C)
DI-10
DI-11
DI-20
DI-21
DI-22
DI-23
DI-30
DI-31
DI-40
DI-41
DI-42		 350
350
250
290
300
700
370
500
1100
1160
1000
1100
1200
1300
1100
1400
 3.8
4.0
4.6
4.7
4.6
6.5
4.0
6.0
4.2
4.2
4.0		 800
650
100
930
110
730
800
700		 450
450
450
450
450
450
450
450
450
450
450
DP-110
DP-200
DP-210		 500
250
290		 1500
1000
1100		 6.5
4.6
4.7		 500
100
930		 550
550
550
DE-1
DE-2
DE-3		     4.5
3.8 		730
860
150		 400
400
400
DMI-10
DMI-11
DMI-40
DMI-41
DMI-20
DMI-21		 720
460
750
550
350
300

 



1200
1200

 3.2
3.3


3.5
4.0


250
230
250
250
 300
300
300
300
300
300
DM-50
DM-51		 250
250
 1000
1000		 3.0
3.0 		200
200		 300
350
SiC-10 140 3500 4.0 82 800
DPAN-10     6.0 0.6 200

DI Grade : Method of lsotropy
DP : Purity Graphite
DE : Method of extrude
DMI : Impervious Graphite
SiC : Convert Graphite Surface to SiC

 

 
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