Carbon grades
Following are a selection of more commonly used grades found in both industrial and rail applications. Should you be looking for something, which may not be listed, please
contact us.
|
|
Electro graphitic materials
|
GRADE
|
RESISTIVITY
|
FLEXURAL
|
HARDNESS
|
DENSITY
|
CONTACT
|
FRICTION
|
CURRENT
|
MAX
|
|
|
|
STRENGTH
|
|
|
DROP
|
COEF.
|
DENSITY
|
SURFACE
|
|
|
u
OHM / m
|
Mpa
|
scleroscope
|
g/cm
^3
|
VOLTS
|
|
A/cm
sqr
|
SPEED
|
|
AY
|
10
|
20.7
|
45
|
1.6
|
1.8
|
0.29
|
6-15
|
20
|
|
G70
|
11
|
29.4
|
45
|
|
|
0.29
|
12
|
50
|
|
258
|
19
|
18.6
|
39
|
1.6
|
1.8
|
0.19
|
10-15
|
31
|
|
N39
|
20
|
31
|
47
|
1.77
|
2.4
|
0.19
|
15.5
|
51
|
|
DE7000
|
48
|
38
|
83
|
1.71
|
2.5
|
0.19
|
15
|
51
|
|
N2000
|
48
|
32
|
71
|
1.56
|
2.5
|
0.19
|
15
|
41
|
|
234
|
51
|
27.6
|
62
|
1.5
|
2.4
|
0.19
|
10
|
31
|
|
DE3
|
51
|
31
|
70
|
1.62
|
2.4
|
0.19
|
15
|
41
|
|
DE8
|
51
|
34.5
|
85
|
1.68
|
2.4
|
0.19
|
15
|
41
|
|
N5000
|
51
|
34.5
|
85
|
1.6
|
2.4
|
0.19
|
10
|
41
|
|
AX5
|
53
|
17.2
|
54
|
1.56
|
2.4
|
0.19
|
15
|
41
|
|
DE2
|
53
|
25.5
|
72
|
1.64
|
2.4
|
0.19
|
15
|
41
|
|
DE9000
|
53
|
33.1
|
85
|
1.68
|
2.5
|
0.19
|
15.5
|
51
|
|
SA35
|
53
|
16.5
|
61
|
1.54
|
2.5
|
0.19
|
15
|
41
|
|
TA35R
|
53
|
16.5
|
61
|
1.54
|
2.5
|
0.19
|
15
|
41
|
|
TA35
|
55
|
15.5
|
57
|
1.55
|
2.4
|
0.19
|
15
|
41
|
|
N6000
|
60
|
13.8
|
66
|
1.55
|
2.5
|
0.19
|
15
|
41
|
|
TA45R
|
60.1
|
15.1
|
55
|
1.62
|
2.5
|
0.19
|
15.5
|
51
|
|
DE5
|
61
|
27.6
|
88
|
1.65
|
2.4
|
0.19
|
15
|
51
|
|
DE7
|
61
|
30.3
|
92
|
1.67
|
2.4
|
0.19
|
15
|
51
|
|
DE25
|
61
|
22.5
|
85
|
1.6
|
2.5
|
0.19
|
15.5
|
51
|
|
N19
|
61
|
19.3
|
76
|
1.61
|
2.5
|
0.19
|
10
|
41
|
|
SA40
|
61
|
10.3
|
53
|
1.5
|
2.5
|
0.19
|
15
|
51
|
|
SA4548
|
64
|
10.3
|
50
|
1.5
|
2.5
|
0.29
|
15
|
41
|
|
SA45
|
66
|
10
|
50
|
1.49
|
2.5
|
0.19
|
15
|
41
|
|
TA45
|
66
|
11.7
|
54
|
1.53
|
2.5
|
0.29
|
10
|
51
|
|
TA50R
|
66
|
12
|
57
|
1.62
|
2.5
|
0.19
|
15.5
|
51
|
|
N18
|
71
|
15.5
|
56
|
1.61
|
2.5
|
0.19
|
15.5
|
51
|
|
N48
|
71
|
13.8
|
59
|
1.58
|
2.5
|
0.19
|
15
|
51
|
|
SA50
|
71
|
6.9
|
50
|
1.49
|
2.5
|
0.29
|
15
|
51
|
|
TA50
|
71
|
8.8
|
55
|
1.53
|
2.4
|
0.19
|
15.5
|
51
|
|
SA4542
|
73
|
10.5
|
57
|
1.51
|
2.5
|
0.29
|
15
|
41
|
|
TA4542
|
73
|
9.9
|
59
|
1.57
|
2.4
|
0.29
|
15
|
41
|
|
GRADE
|
RESISTIVITY
|
FLEXURAL
|
HARDNESS
|
DENSITY
|
CONTACT
|
FRICTION
|
CURRENT
|
MAX
|
|
|
|
STRENGTH
|
|
|
DROP
|
COEF.
|
DENSITY
|
SURFACE
|
|
|
u
OHM / m
|
Mpa
|
scleroscope
|
g/cm
^3
|
|
|
A/cm
sqr
|
SPEED
|
|
EGO
|
12
|
21
|
36
|
1.55
|
0.95
|
0.11
|
10
|
30
|
|
EGOR
|
12
|
21
|
36
|
1.55
|
0.97
|
0.09
|
10
|
50
|
|
EG260
|
12
|
17
|
37
|
1.55
|
0.84
|
0.17
|
10
|
40
|
|
EG6749N
|
21
|
23
|
67
|
1.65
|
0.83
|
0.11
|
10
|
40
|
|
EG12
|
23
|
18
|
63
|
1.6
|
0.9
|
0.1
|
10
|
40
|
|
EG6345
|
25
|
20
|
67
|
1.63
|
0.98
|
0.1
|
10
|
30
|
|
EG11
|
28
|
18
|
63
|
1.6
|
0.88
|
0.11
|
10
|
40
|
|
EG225
|
36
|
14
|
42
|
1.62
|
0.91
|
0.12
|
12
|
40
|
|
EG14
|
42
|
24
|
61
|
1.6
|
0.92
|
0.16
|
12
|
40
|
|
EG14D
|
45
|
36
|
67
|
1.63
|
1.1
|
0.1
|
12
|
40
|
|
EG16
|
45
|
19
|
57
|
1.6
|
1.05
|
0.1
|
12
|
50
|
|
EG105
|
48
|
22
|
65
|
1.62
|
1.1
|
0.1
|
12
|
50
|
|
EG224
|
48
|
17
|
60
|
1.6
|
1
|
0.1
|
12
|
50
|
|
EG236S
|
48
|
19
|
57
|
1.6
|
1.05
|
0.1
|
12
|
50
|
|
EG259
|
53
|
36
|
66
|
1.75
|
1.4
|
0.06
|
10
|
60
|
|
EG251
|
54
|
21
|
60
|
1.68
|
1.11
|
0.08
|
12
|
60
|
|
EG116
|
58
|
25
|
62
|
1.57
|
1.2
|
0.11
|
12
|
50
|
|
EG275A
|
58
|
30
|
65
|
1.65
|
1.1
|
0.13
|
12
|
40
|
|
EG283
|
62
|
13
|
45
|
1.47
|
1.45
|
0.07
|
12
|
60
|
Resin
bonded materials
|
GRADE
|
RESISTIVITY
|
FLEXURAL
|
HARDNESS
|
DENSITY
|
CONTACT
|
FRICTION
|
CURRENT
|
MAX
|
|
|
|
STRENGTH
|
|
|
DROP
|
COEF.
|
DENSITY
|
SURFACE
|
|
|
u
OHM / m
|
Mpa
|
scleroscope
|
g/cm
^3
|
|
|
A/cm
sqr
|
SPEED
|
|
IM9101
|
102
|
50
|
39
|
1.85
|
1.55
|
0.05
|
8
|
30
|
|
IM3
|
117
|
29
|
24
|
1.78
|
1.4
|
0.1
|
6
|
30
|
|
IM26
|
120
|
46
|
44
|
1.76
|
1.65
|
0.04
|
7
|
30
|
|
IM23
|
140
|
36
|
38
|
1.72
|
1.64
|
0.04
|
9
|
30
|
|
IM8876
|
178
|
55
|
47
|
1.9
|
2
|
0.04
|
7
|
30
|
Copper
graphite materials
|
GRADE
|
RESISTIVITY
|
FLEXURAL
|
HARDNESS
|
DENSITY
|
CONTACT
|
FRICTION
|
CURRENT
|
MAX
|
|
|
|
STRENGTH
|
|
|
DROP
|
COEF.
|
DENSITY
|
SURFACE
|
|
|
u
OHM / m
|
Mpa
|
scleroscope
|
g/cm
^3
|
|
|
A/cm
sqr
|
SPEED
|
|
SM9173
|
0.075
|
58
|
18
|
5.2
|
0.12
|
0.15
|
25
|
20
|
|
CM
|
0.08
|
41
|
6
|
6.1
|
0.12
|
0.11
|
23
|
20
|
|
SM0
|
0.1
|
58
|
24
|
5.25
|
|
|
|
|
|
CM3H
|
0.2
|
27
|
10
|
4.2
|
0.26
|
0.1
|
16
|
30
|
|
CM1S
|
0.32
|
68
|
9
|
5.5
|
0.12
|
0.11
|
23
|
30
|
|
CM5H
|
0.35
|
23
|
15
|
3.9
|
0.43
|
0.1
|
14
|
30
|
|
CM5B
|
0.9
|
33
|
20
|
3.5
|
0.5
|
0.09
|
14
|
30
|
|
SM3
|
2.05
|
26
|
29
|
2.5
|
0.45
|
0.15
|
15
|
20
|
|
CM9
|
3
|
29
|
25
|
2.8
|
0.58
|
0.11
|
11
|
35
|
Natural
graphite materials
|
GRADE
|
RESISTIVITY
|
FLEXURAL
|
HARDNESS
|
DENSITY
|
CONTACT
|
FRICTION
|
CURRENT
|
MAX
|
|
|
|
STRENGTH
|
|
|
DROP
|
COEF.
|
DENSITY
|
SURFACE
|
|
|
u
OHM / m
|
Mpa
|
scleroscope
|
g/cm
^3
|
|
|
A/cm
sqr
|
SPEED
|
|
HM5
|
10.2
|
10
|
12
|
2
|
0.77
|
0.14
|
11
|
50
|
|
HM2
|
13
|
11
|
23
|
2
|
0.82
|
0.09
|
10
|
50
|
|
634
|
18
|
5.2
|
20
|
1.28
|
2.5
|
.29
|
10
|
81
|
|
HM6R
|
20
|
9
|
13
|
1
|
1.71
|
0.19
|
10
|
80
|
|
HM100
|
21
|
9
|
13
|
1
|
1.72
|
0.16
|
10
|
90
|
The values provided above are typical
values only. We reserve the right to modify material
specifications at our discretion
|
