|
Graphite rods |
|
|
|
Nominal
sizes of Unmachined graphite rods
|
| |
|
|
|
| Dia |
Length |
Dia |
Length |
| 3 |
72 |
75 |
1800 |
| 4 |
72 |
100 |
1800 |
| 5 |
72 |
125 |
1800 |
| 6 |
72 |
150 |
1800 |
| 7 |
72 |
175 |
1800 |
| 8 |
72 |
200 |
1800 |
| 9 |
72 |
225 |
1800 |
| 10 |
72 |
250 |
1800 |
| 11 |
72 |
275 |
1800 |
| 12 |
72 |
300 |
1800 |
| 14 |
72 |
350 |
1800 |
| 16 |
72 |
400 |
1800 |
| 18 |
72 |
450 |
1800 |
| 20 |
72 |
500 |
1800 |
| 22 |
72 |
550 |
1800 |
| 24 |
72 |
600 |
1800 |
| 28 |
72 |
700 |
1800 |
| 30 |
72 |
750 |
1800 |
|
Nominal
sizes of Unmachined graphite blocks
|
| |
| Inches |
Millimeters |
| Section |
Length |
Section |
Length |
| 16
x 16 |
72 |
400
x 400 |
1800 |
| 20
x 20 |
72 |
500
x 500 |
1800 |
| 22
x 22 |
72 |
550
x 550 |
1800 |
|
| Properties
of graphite blocks and rods Typical |
|
(Metric units)
|
GRADE
|
GLM-C
|
GLM-E
|
GLM-50
|
GLM
|
GLM-S
|
| Maximum
particle size, |
mm |
|
1.8
|
0.8
|
0.8
|
0.8
|
0.8
|
| Apparent
Density (min), |
gm/cc
|
|
1.60
|
1.57
|
1.67
|
1.74
|
1.78
|
|
|
40
|
40
|
55
|
70
|
70
|
|
|
25
|
26
|
20
|
16
|
13
|
|
Electrical
Resistivity,
Micro ohm.m
|
WG
|
8
|
8
|
7
|
7
|
6
|
|
|
AG
|
12
|
12
|
12
|
12
|
11
|
|
Modulus
of Rupture,
N/mm2
|
WG
|
8
|
10
|
18
|
21
|
25
|
|
|
AG
|
5
|
6
|
14
|
15
|
17
|
|
Compressive
strength
N/mm2
|
WG
|
16
|
16
|
34
|
38
|
43
|
|
|
AG
|
16
|
16
|
34
|
38
|
43
|
|
Modulus
of Elasticity,
x103N/mn2
|
WG
|
7
|
7.5
|
10
|
13
|
15
|
|
|
AG
|
4
|
4.5
|
8
|
10
|
12
|
|
Thermal
Conductivity,
W/m.oC
|
WG
|
120
|
140
|
180
|
200
|
240
|
|
|
AG
|
80
|
100
|
130
|
1500
|
180
|
|
Co-eff.T.
Expansion,
x10-7/oC
|
WG
|
10
|
10
|
14
|
16
|
20
|
|
|
AG
|
30
|
22
|
30
|
34
|
40
|
|
Tensile
Strength, N/mm2
|
WG
|
6
|
6
|
14
|
15
|
18
|
|
|
AG
|
3.5
|
5
|
9
|
10
|
11
|
(British units)
|
GRADE
|
GLM-C
|
GLM-E
|
GLM-50
|
GLM
|
GLM-S
|
|
Maximum
particle size,
inch
|
0.071
|
0.031
|
0.031
|
0.031
|
0.031
|
|
Apparent
Density (min),
lb/ft3
|
99.86
|
97.94
|
104.2
|
108.5
|
111
|
|
Hardness
Rockwell
“R”
|
40
|
40
|
55
|
70
|
70
|
|
Porosity,
%
|
25
|
26
|
20
|
16
|
13
|
|
Electrical
Resistivity,
x10-5 ohm in
|
WG
|
31.5
|
31
|
27.6
|
27.6
|
23.6
|
|
|
AG
|
47.2
|
47.2
|
47.2
|
47.2
|
43.3
|
|
Modulus
of Rupture,
psi
|
WG
|
1140
|
1420
|
2550
|
3000
|
3500
|
|
|
AG
|
710
|
850
|
2000
|
2130
|
2400
|
|
Compressive
strength
psi
|
WG
|
2270
|
3120
|
4820
|
5400
|
6100
|
|
|
AG
|
2270
|
3120
|
4820
|
5400
|
6100
|
|
Modulus
of Elasticity,
x106 psi
|
WG
|
1.00
|
1.07
|
1.42
|
1.85
|
2.13
|
|
|
AG
|
0.57
|
0.64
|
1.14
|
1.42
|
1.7
|
|
Thermal
Conductivity,
BTU/ft.hroF
|
WG
|
70
|
93
|
105
|
116
|
140
|
|
|
AG
|
46
|
58
|
75
|
87
|
104
|
|
Co-eff.T.
Expansion,
x10-7/oF
|
WG
|
5.1
|
5.1
|
7.14
|
8.16
|
10.2
|
|
|
AG
|
15.3
|
12.2
|
16.64
|
18.85
|
22.18
|
|
Tensile
Strength,
psi
|
WG
|
850
|
850
|
2000
|
2130
|
2560
|
|
|
AG
|
508
|
780
|
1280
|
1420
|
1560
|
|
|
|
